How can I run a Python 3 script?












2















I want to run a Python 3 script.



I have looked in the official doc and FAQ, and they are the typical loss. I was looking for answers, I ended up with more questions.



I have Windows and Linux. On Windows, I don't have Python. On Linux, I have Python, but it is Python 2.6.8. I have tried to run my script with this Python, but this gives an error.



I want something simple : a Python 3 that I would put somewhere in my disk and that I would use to run my script. Where can I find this ?



I am looking for a solution for Windows or Linux.



Thank you.










share|improve this question


















  • 1





    Are you sure you do not have python3 installed on your linux box ? Several distros ship it but it is not the default python used to run scripts.

    – NaeiKinDus
    Jan 6 '15 at 11:02











  • @NaeiKinDus - No, I am not sure. I have tried the command python3 but the command is not found.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:10






  • 1





    you could try the following project for linux: code.google.com/p/pts-mini-gpl/wiki/StaticPython You can directly download the Python binary and run it without having to install it on your system.

    – NaeiKinDus
    Jan 6 '15 at 12:58











  • @NaeiKinDus - I have already managed to use the Portable Python suggested by Karel. But StaticPython is good to know.

    – Nicolas Barbulesco
    Jan 6 '15 at 13:09
















2















I want to run a Python 3 script.



I have looked in the official doc and FAQ, and they are the typical loss. I was looking for answers, I ended up with more questions.



I have Windows and Linux. On Windows, I don't have Python. On Linux, I have Python, but it is Python 2.6.8. I have tried to run my script with this Python, but this gives an error.



I want something simple : a Python 3 that I would put somewhere in my disk and that I would use to run my script. Where can I find this ?



I am looking for a solution for Windows or Linux.



Thank you.










share|improve this question


















  • 1





    Are you sure you do not have python3 installed on your linux box ? Several distros ship it but it is not the default python used to run scripts.

    – NaeiKinDus
    Jan 6 '15 at 11:02











  • @NaeiKinDus - No, I am not sure. I have tried the command python3 but the command is not found.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:10






  • 1





    you could try the following project for linux: code.google.com/p/pts-mini-gpl/wiki/StaticPython You can directly download the Python binary and run it without having to install it on your system.

    – NaeiKinDus
    Jan 6 '15 at 12:58











  • @NaeiKinDus - I have already managed to use the Portable Python suggested by Karel. But StaticPython is good to know.

    – Nicolas Barbulesco
    Jan 6 '15 at 13:09














2












2








2


2






I want to run a Python 3 script.



I have looked in the official doc and FAQ, and they are the typical loss. I was looking for answers, I ended up with more questions.



I have Windows and Linux. On Windows, I don't have Python. On Linux, I have Python, but it is Python 2.6.8. I have tried to run my script with this Python, but this gives an error.



I want something simple : a Python 3 that I would put somewhere in my disk and that I would use to run my script. Where can I find this ?



I am looking for a solution for Windows or Linux.



Thank you.










share|improve this question














I want to run a Python 3 script.



I have looked in the official doc and FAQ, and they are the typical loss. I was looking for answers, I ended up with more questions.



I have Windows and Linux. On Windows, I don't have Python. On Linux, I have Python, but it is Python 2.6.8. I have tried to run my script with this Python, but this gives an error.



I want something simple : a Python 3 that I would put somewhere in my disk and that I would use to run my script. Where can I find this ?



I am looking for a solution for Windows or Linux.



Thank you.







linux windows script python python3






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jan 6 '15 at 10:58









Nicolas BarbulescoNicolas Barbulesco

2363716




2363716








  • 1





    Are you sure you do not have python3 installed on your linux box ? Several distros ship it but it is not the default python used to run scripts.

    – NaeiKinDus
    Jan 6 '15 at 11:02











  • @NaeiKinDus - No, I am not sure. I have tried the command python3 but the command is not found.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:10






  • 1





    you could try the following project for linux: code.google.com/p/pts-mini-gpl/wiki/StaticPython You can directly download the Python binary and run it without having to install it on your system.

    – NaeiKinDus
    Jan 6 '15 at 12:58











  • @NaeiKinDus - I have already managed to use the Portable Python suggested by Karel. But StaticPython is good to know.

    – Nicolas Barbulesco
    Jan 6 '15 at 13:09














  • 1





    Are you sure you do not have python3 installed on your linux box ? Several distros ship it but it is not the default python used to run scripts.

    – NaeiKinDus
    Jan 6 '15 at 11:02











  • @NaeiKinDus - No, I am not sure. I have tried the command python3 but the command is not found.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:10






  • 1





    you could try the following project for linux: code.google.com/p/pts-mini-gpl/wiki/StaticPython You can directly download the Python binary and run it without having to install it on your system.

    – NaeiKinDus
    Jan 6 '15 at 12:58











  • @NaeiKinDus - I have already managed to use the Portable Python suggested by Karel. But StaticPython is good to know.

    – Nicolas Barbulesco
    Jan 6 '15 at 13:09








1




1





Are you sure you do not have python3 installed on your linux box ? Several distros ship it but it is not the default python used to run scripts.

– NaeiKinDus
Jan 6 '15 at 11:02





Are you sure you do not have python3 installed on your linux box ? Several distros ship it but it is not the default python used to run scripts.

– NaeiKinDus
Jan 6 '15 at 11:02













@NaeiKinDus - No, I am not sure. I have tried the command python3 but the command is not found.

– Nicolas Barbulesco
Jan 6 '15 at 11:10





@NaeiKinDus - No, I am not sure. I have tried the command python3 but the command is not found.

– Nicolas Barbulesco
Jan 6 '15 at 11:10




1




1





you could try the following project for linux: code.google.com/p/pts-mini-gpl/wiki/StaticPython You can directly download the Python binary and run it without having to install it on your system.

– NaeiKinDus
Jan 6 '15 at 12:58





you could try the following project for linux: code.google.com/p/pts-mini-gpl/wiki/StaticPython You can directly download the Python binary and run it without having to install it on your system.

– NaeiKinDus
Jan 6 '15 at 12:58













@NaeiKinDus - I have already managed to use the Portable Python suggested by Karel. But StaticPython is good to know.

– Nicolas Barbulesco
Jan 6 '15 at 13:09





@NaeiKinDus - I have already managed to use the Portable Python suggested by Karel. But StaticPython is good to know.

– Nicolas Barbulesco
Jan 6 '15 at 13:09










4 Answers
4






active

oldest

votes


















2














You have registered for Ask Ubuntu Q&A, so I'll provide the command for Ubuntu. In Ubuntu open the terminal and type:



sudo apt install python3 idle3  


python3 is already installed by default in Ubuntu, I have added python3 to the command for the sake of generality with other Linux distributions. IDLE 3 is an Integrated Development Environment for Python 3. Open IDLE 3 and then open your Python script from the menu in IDLE 3 -> File -> Open.



In Windows IDLE 3 is bundled with the Python 3 installation file, and the instructions for opening a Python 3 script in IDLE 3 are the same.



You can also install Python 3 in Windows as a portable app. Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. Portable Python is available for both Python 2 and Python 3. The download options for Portable Python offer you a choice of downloading optional additional Python packages for scientific computing, etc. The installed size of Portable Python (Python 3), based on the selected packages, is between 63MB and 260MB.






share|improve this answer


























  • On Windows, I did not succeed with the Python 3 installer. It asks me for admin auth, even when I choose to install "just for me".

    – Nicolas Barbulesco
    Jan 6 '15 at 11:27











  • On Linux, I don't want to run this kind of command. I have an integration server, and I don't want to install anything in the system. I want to have and use Python 3 in a folder.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:31











  • Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. There is a way to run Python scripts as a regular user without administrative privileges in both Windows and Linux by running the scripts from the Python virtual environment creator (virtualenv). Using virtualenv will improve security when running untrusted Python scripts. You can also install Python 3 itself inside a virtualenv Python virtual environment. However you still need administrative privileges to install virtualenv.

    – karel
    Jan 6 '15 at 11:34








  • 2





    Portable Python for Python 3 is currently at version 3.2.5.1.

    – karel
    Jan 6 '15 at 11:37











  • Karel, I understand that Portable Python and virtualenv are two different things. I am interested in Portable Python !

    – Nicolas Barbulesco
    Jan 6 '15 at 11:39



















1














On many systems, "python" defaults to "python2", but you can run a script under python 3 simply by doing



python3 myscript.py


Issuing



which python3


will tell you if that's going to work.



Also, if the script includes an appropriate shebang,



./myscript.py


is supposed to work...






share|improve this answer
























  • On Linux, the command python3 is not found. Neither on Windows.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:06











  • Regarding launching the script with "./" , it fails : /usr/bin/env: python3: No file or folder of that type.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:09











  • Then you definitely have to install python 3. I see you're discussing that in the comments to the other answers.

    – Nemo
    Jan 6 '15 at 14:50



















1














For Windows:




  1. You need to install Python 3 from here

  2. Follow the setup instructions, making sure to check the box that says whether to add it to the system PATH variable

  3. Go into cmd, cd to the location of the script, and type python script.py, replacing script with your filename or open the script with Python Launcher which will have been installed via the installer


To make the script, you can use Python IDLE which was also installed.






share|improve this answer
























  • This link does not give Python 3, it gives an installer, .msi. Coming from the Mac, I am not fond of installing programs. Anyway, I have (re-)tried the installer, to no avail. Even when I choose to install "just for me", the installer asks me for admin auth, and it fails. Why can't those people just provide a Zip file ?

    – Nicolas Barbulesco
    Jan 6 '15 at 11:41













  • @NicolasBarbulesco So you want to run python without installing? Like a portable version??

    – ᔕᖺᘎᕊ
    Jan 6 '15 at 11:43











  • Yes ! I am looking into @karel's solution.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:45






  • 1





    OK, I didn't see @karel's comments - I agree about using Portable Python, it works fine on a USB for me :)

    – ᔕᖺᘎᕊ
    Jan 6 '15 at 11:46



















-1














There is a difference from Linux to Windows.
On Linux you would type like this:



python3 script.py


While on Windows (once you have Python installed) chances are you would type:



py -3 script.py


Comparing to py -2 script.py that would run Python 2.





Note: On Windows python or python.exe would call the latest version of Python you have installed.






share|improve this answer





















  • 1





    Huh, aren't the Windows binaries called python.exe? Where did you get py from?

    – slhck
    Jan 11 at 12:58











  • I don't care, I just use it with py when I need to specify the version, but python or python.exe still works.

    – prosti
    Jan 11 at 15:48













  • So it's not really required. That said, this seems to be a new feature with version 3.6: docs.python.org/3/using/windows.html

    – slhck
    Jan 11 at 21:21













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4 Answers
4






active

oldest

votes








4 Answers
4






active

oldest

votes









active

oldest

votes






active

oldest

votes









2














You have registered for Ask Ubuntu Q&A, so I'll provide the command for Ubuntu. In Ubuntu open the terminal and type:



sudo apt install python3 idle3  


python3 is already installed by default in Ubuntu, I have added python3 to the command for the sake of generality with other Linux distributions. IDLE 3 is an Integrated Development Environment for Python 3. Open IDLE 3 and then open your Python script from the menu in IDLE 3 -> File -> Open.



In Windows IDLE 3 is bundled with the Python 3 installation file, and the instructions for opening a Python 3 script in IDLE 3 are the same.



You can also install Python 3 in Windows as a portable app. Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. Portable Python is available for both Python 2 and Python 3. The download options for Portable Python offer you a choice of downloading optional additional Python packages for scientific computing, etc. The installed size of Portable Python (Python 3), based on the selected packages, is between 63MB and 260MB.






share|improve this answer


























  • On Windows, I did not succeed with the Python 3 installer. It asks me for admin auth, even when I choose to install "just for me".

    – Nicolas Barbulesco
    Jan 6 '15 at 11:27











  • On Linux, I don't want to run this kind of command. I have an integration server, and I don't want to install anything in the system. I want to have and use Python 3 in a folder.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:31











  • Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. There is a way to run Python scripts as a regular user without administrative privileges in both Windows and Linux by running the scripts from the Python virtual environment creator (virtualenv). Using virtualenv will improve security when running untrusted Python scripts. You can also install Python 3 itself inside a virtualenv Python virtual environment. However you still need administrative privileges to install virtualenv.

    – karel
    Jan 6 '15 at 11:34








  • 2





    Portable Python for Python 3 is currently at version 3.2.5.1.

    – karel
    Jan 6 '15 at 11:37











  • Karel, I understand that Portable Python and virtualenv are two different things. I am interested in Portable Python !

    – Nicolas Barbulesco
    Jan 6 '15 at 11:39
















2














You have registered for Ask Ubuntu Q&A, so I'll provide the command for Ubuntu. In Ubuntu open the terminal and type:



sudo apt install python3 idle3  


python3 is already installed by default in Ubuntu, I have added python3 to the command for the sake of generality with other Linux distributions. IDLE 3 is an Integrated Development Environment for Python 3. Open IDLE 3 and then open your Python script from the menu in IDLE 3 -> File -> Open.



In Windows IDLE 3 is bundled with the Python 3 installation file, and the instructions for opening a Python 3 script in IDLE 3 are the same.



You can also install Python 3 in Windows as a portable app. Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. Portable Python is available for both Python 2 and Python 3. The download options for Portable Python offer you a choice of downloading optional additional Python packages for scientific computing, etc. The installed size of Portable Python (Python 3), based on the selected packages, is between 63MB and 260MB.






share|improve this answer


























  • On Windows, I did not succeed with the Python 3 installer. It asks me for admin auth, even when I choose to install "just for me".

    – Nicolas Barbulesco
    Jan 6 '15 at 11:27











  • On Linux, I don't want to run this kind of command. I have an integration server, and I don't want to install anything in the system. I want to have and use Python 3 in a folder.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:31











  • Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. There is a way to run Python scripts as a regular user without administrative privileges in both Windows and Linux by running the scripts from the Python virtual environment creator (virtualenv). Using virtualenv will improve security when running untrusted Python scripts. You can also install Python 3 itself inside a virtualenv Python virtual environment. However you still need administrative privileges to install virtualenv.

    – karel
    Jan 6 '15 at 11:34








  • 2





    Portable Python for Python 3 is currently at version 3.2.5.1.

    – karel
    Jan 6 '15 at 11:37











  • Karel, I understand that Portable Python and virtualenv are two different things. I am interested in Portable Python !

    – Nicolas Barbulesco
    Jan 6 '15 at 11:39














2












2








2







You have registered for Ask Ubuntu Q&A, so I'll provide the command for Ubuntu. In Ubuntu open the terminal and type:



sudo apt install python3 idle3  


python3 is already installed by default in Ubuntu, I have added python3 to the command for the sake of generality with other Linux distributions. IDLE 3 is an Integrated Development Environment for Python 3. Open IDLE 3 and then open your Python script from the menu in IDLE 3 -> File -> Open.



In Windows IDLE 3 is bundled with the Python 3 installation file, and the instructions for opening a Python 3 script in IDLE 3 are the same.



You can also install Python 3 in Windows as a portable app. Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. Portable Python is available for both Python 2 and Python 3. The download options for Portable Python offer you a choice of downloading optional additional Python packages for scientific computing, etc. The installed size of Portable Python (Python 3), based on the selected packages, is between 63MB and 260MB.






share|improve this answer















You have registered for Ask Ubuntu Q&A, so I'll provide the command for Ubuntu. In Ubuntu open the terminal and type:



sudo apt install python3 idle3  


python3 is already installed by default in Ubuntu, I have added python3 to the command for the sake of generality with other Linux distributions. IDLE 3 is an Integrated Development Environment for Python 3. Open IDLE 3 and then open your Python script from the menu in IDLE 3 -> File -> Open.



In Windows IDLE 3 is bundled with the Python 3 installation file, and the instructions for opening a Python 3 script in IDLE 3 are the same.



You can also install Python 3 in Windows as a portable app. Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. Portable Python is available for both Python 2 and Python 3. The download options for Portable Python offer you a choice of downloading optional additional Python packages for scientific computing, etc. The installed size of Portable Python (Python 3), based on the selected packages, is between 63MB and 260MB.







share|improve this answer














share|improve this answer



share|improve this answer








edited Mar 17 '18 at 18:54

























answered Jan 6 '15 at 11:19









karelkarel

9,25293138




9,25293138













  • On Windows, I did not succeed with the Python 3 installer. It asks me for admin auth, even when I choose to install "just for me".

    – Nicolas Barbulesco
    Jan 6 '15 at 11:27











  • On Linux, I don't want to run this kind of command. I have an integration server, and I don't want to install anything in the system. I want to have and use Python 3 in a folder.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:31











  • Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. There is a way to run Python scripts as a regular user without administrative privileges in both Windows and Linux by running the scripts from the Python virtual environment creator (virtualenv). Using virtualenv will improve security when running untrusted Python scripts. You can also install Python 3 itself inside a virtualenv Python virtual environment. However you still need administrative privileges to install virtualenv.

    – karel
    Jan 6 '15 at 11:34








  • 2





    Portable Python for Python 3 is currently at version 3.2.5.1.

    – karel
    Jan 6 '15 at 11:37











  • Karel, I understand that Portable Python and virtualenv are two different things. I am interested in Portable Python !

    – Nicolas Barbulesco
    Jan 6 '15 at 11:39



















  • On Windows, I did not succeed with the Python 3 installer. It asks me for admin auth, even when I choose to install "just for me".

    – Nicolas Barbulesco
    Jan 6 '15 at 11:27











  • On Linux, I don't want to run this kind of command. I have an integration server, and I don't want to install anything in the system. I want to have and use Python 3 in a folder.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:31











  • Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. There is a way to run Python scripts as a regular user without administrative privileges in both Windows and Linux by running the scripts from the Python virtual environment creator (virtualenv). Using virtualenv will improve security when running untrusted Python scripts. You can also install Python 3 itself inside a virtualenv Python virtual environment. However you still need administrative privileges to install virtualenv.

    – karel
    Jan 6 '15 at 11:34








  • 2





    Portable Python for Python 3 is currently at version 3.2.5.1.

    – karel
    Jan 6 '15 at 11:37











  • Karel, I understand that Portable Python and virtualenv are two different things. I am interested in Portable Python !

    – Nicolas Barbulesco
    Jan 6 '15 at 11:39

















On Windows, I did not succeed with the Python 3 installer. It asks me for admin auth, even when I choose to install "just for me".

– Nicolas Barbulesco
Jan 6 '15 at 11:27





On Windows, I did not succeed with the Python 3 installer. It asks me for admin auth, even when I choose to install "just for me".

– Nicolas Barbulesco
Jan 6 '15 at 11:27













On Linux, I don't want to run this kind of command. I have an integration server, and I don't want to install anything in the system. I want to have and use Python 3 in a folder.

– Nicolas Barbulesco
Jan 6 '15 at 11:31





On Linux, I don't want to run this kind of command. I have an integration server, and I don't want to install anything in the system. I want to have and use Python 3 in a folder.

– Nicolas Barbulesco
Jan 6 '15 at 11:31













Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. There is a way to run Python scripts as a regular user without administrative privileges in both Windows and Linux by running the scripts from the Python virtual environment creator (virtualenv). Using virtualenv will improve security when running untrusted Python scripts. You can also install Python 3 itself inside a virtualenv Python virtual environment. However you still need administrative privileges to install virtualenv.

– karel
Jan 6 '15 at 11:34







Portable Python is pre-configured to run directly on the Windows OS from any USB storage device, enabling you to have, at any time, a portable programming environment. There is a way to run Python scripts as a regular user without administrative privileges in both Windows and Linux by running the scripts from the Python virtual environment creator (virtualenv). Using virtualenv will improve security when running untrusted Python scripts. You can also install Python 3 itself inside a virtualenv Python virtual environment. However you still need administrative privileges to install virtualenv.

– karel
Jan 6 '15 at 11:34






2




2





Portable Python for Python 3 is currently at version 3.2.5.1.

– karel
Jan 6 '15 at 11:37





Portable Python for Python 3 is currently at version 3.2.5.1.

– karel
Jan 6 '15 at 11:37













Karel, I understand that Portable Python and virtualenv are two different things. I am interested in Portable Python !

– Nicolas Barbulesco
Jan 6 '15 at 11:39





Karel, I understand that Portable Python and virtualenv are two different things. I am interested in Portable Python !

– Nicolas Barbulesco
Jan 6 '15 at 11:39













1














On many systems, "python" defaults to "python2", but you can run a script under python 3 simply by doing



python3 myscript.py


Issuing



which python3


will tell you if that's going to work.



Also, if the script includes an appropriate shebang,



./myscript.py


is supposed to work...






share|improve this answer
























  • On Linux, the command python3 is not found. Neither on Windows.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:06











  • Regarding launching the script with "./" , it fails : /usr/bin/env: python3: No file or folder of that type.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:09











  • Then you definitely have to install python 3. I see you're discussing that in the comments to the other answers.

    – Nemo
    Jan 6 '15 at 14:50
















1














On many systems, "python" defaults to "python2", but you can run a script under python 3 simply by doing



python3 myscript.py


Issuing



which python3


will tell you if that's going to work.



Also, if the script includes an appropriate shebang,



./myscript.py


is supposed to work...






share|improve this answer
























  • On Linux, the command python3 is not found. Neither on Windows.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:06











  • Regarding launching the script with "./" , it fails : /usr/bin/env: python3: No file or folder of that type.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:09











  • Then you definitely have to install python 3. I see you're discussing that in the comments to the other answers.

    – Nemo
    Jan 6 '15 at 14:50














1












1








1







On many systems, "python" defaults to "python2", but you can run a script under python 3 simply by doing



python3 myscript.py


Issuing



which python3


will tell you if that's going to work.



Also, if the script includes an appropriate shebang,



./myscript.py


is supposed to work...






share|improve this answer













On many systems, "python" defaults to "python2", but you can run a script under python 3 simply by doing



python3 myscript.py


Issuing



which python3


will tell you if that's going to work.



Also, if the script includes an appropriate shebang,



./myscript.py


is supposed to work...







share|improve this answer












share|improve this answer



share|improve this answer










answered Jan 6 '15 at 11:02









NemoNemo

6781629




6781629













  • On Linux, the command python3 is not found. Neither on Windows.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:06











  • Regarding launching the script with "./" , it fails : /usr/bin/env: python3: No file or folder of that type.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:09











  • Then you definitely have to install python 3. I see you're discussing that in the comments to the other answers.

    – Nemo
    Jan 6 '15 at 14:50



















  • On Linux, the command python3 is not found. Neither on Windows.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:06











  • Regarding launching the script with "./" , it fails : /usr/bin/env: python3: No file or folder of that type.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:09











  • Then you definitely have to install python 3. I see you're discussing that in the comments to the other answers.

    – Nemo
    Jan 6 '15 at 14:50

















On Linux, the command python3 is not found. Neither on Windows.

– Nicolas Barbulesco
Jan 6 '15 at 11:06





On Linux, the command python3 is not found. Neither on Windows.

– Nicolas Barbulesco
Jan 6 '15 at 11:06













Regarding launching the script with "./" , it fails : /usr/bin/env: python3: No file or folder of that type.

– Nicolas Barbulesco
Jan 6 '15 at 11:09





Regarding launching the script with "./" , it fails : /usr/bin/env: python3: No file or folder of that type.

– Nicolas Barbulesco
Jan 6 '15 at 11:09













Then you definitely have to install python 3. I see you're discussing that in the comments to the other answers.

– Nemo
Jan 6 '15 at 14:50





Then you definitely have to install python 3. I see you're discussing that in the comments to the other answers.

– Nemo
Jan 6 '15 at 14:50











1














For Windows:




  1. You need to install Python 3 from here

  2. Follow the setup instructions, making sure to check the box that says whether to add it to the system PATH variable

  3. Go into cmd, cd to the location of the script, and type python script.py, replacing script with your filename or open the script with Python Launcher which will have been installed via the installer


To make the script, you can use Python IDLE which was also installed.






share|improve this answer
























  • This link does not give Python 3, it gives an installer, .msi. Coming from the Mac, I am not fond of installing programs. Anyway, I have (re-)tried the installer, to no avail. Even when I choose to install "just for me", the installer asks me for admin auth, and it fails. Why can't those people just provide a Zip file ?

    – Nicolas Barbulesco
    Jan 6 '15 at 11:41













  • @NicolasBarbulesco So you want to run python without installing? Like a portable version??

    – ᔕᖺᘎᕊ
    Jan 6 '15 at 11:43











  • Yes ! I am looking into @karel's solution.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:45






  • 1





    OK, I didn't see @karel's comments - I agree about using Portable Python, it works fine on a USB for me :)

    – ᔕᖺᘎᕊ
    Jan 6 '15 at 11:46
















1














For Windows:




  1. You need to install Python 3 from here

  2. Follow the setup instructions, making sure to check the box that says whether to add it to the system PATH variable

  3. Go into cmd, cd to the location of the script, and type python script.py, replacing script with your filename or open the script with Python Launcher which will have been installed via the installer


To make the script, you can use Python IDLE which was also installed.






share|improve this answer
























  • This link does not give Python 3, it gives an installer, .msi. Coming from the Mac, I am not fond of installing programs. Anyway, I have (re-)tried the installer, to no avail. Even when I choose to install "just for me", the installer asks me for admin auth, and it fails. Why can't those people just provide a Zip file ?

    – Nicolas Barbulesco
    Jan 6 '15 at 11:41













  • @NicolasBarbulesco So you want to run python without installing? Like a portable version??

    – ᔕᖺᘎᕊ
    Jan 6 '15 at 11:43











  • Yes ! I am looking into @karel's solution.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:45






  • 1





    OK, I didn't see @karel's comments - I agree about using Portable Python, it works fine on a USB for me :)

    – ᔕᖺᘎᕊ
    Jan 6 '15 at 11:46














1












1








1







For Windows:




  1. You need to install Python 3 from here

  2. Follow the setup instructions, making sure to check the box that says whether to add it to the system PATH variable

  3. Go into cmd, cd to the location of the script, and type python script.py, replacing script with your filename or open the script with Python Launcher which will have been installed via the installer


To make the script, you can use Python IDLE which was also installed.






share|improve this answer













For Windows:




  1. You need to install Python 3 from here

  2. Follow the setup instructions, making sure to check the box that says whether to add it to the system PATH variable

  3. Go into cmd, cd to the location of the script, and type python script.py, replacing script with your filename or open the script with Python Launcher which will have been installed via the installer


To make the script, you can use Python IDLE which was also installed.







share|improve this answer












share|improve this answer



share|improve this answer










answered Jan 6 '15 at 11:15









ᔕᖺᘎᕊᔕᖺᘎᕊ

5,19842441




5,19842441













  • This link does not give Python 3, it gives an installer, .msi. Coming from the Mac, I am not fond of installing programs. Anyway, I have (re-)tried the installer, to no avail. Even when I choose to install "just for me", the installer asks me for admin auth, and it fails. Why can't those people just provide a Zip file ?

    – Nicolas Barbulesco
    Jan 6 '15 at 11:41













  • @NicolasBarbulesco So you want to run python without installing? Like a portable version??

    – ᔕᖺᘎᕊ
    Jan 6 '15 at 11:43











  • Yes ! I am looking into @karel's solution.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:45






  • 1





    OK, I didn't see @karel's comments - I agree about using Portable Python, it works fine on a USB for me :)

    – ᔕᖺᘎᕊ
    Jan 6 '15 at 11:46



















  • This link does not give Python 3, it gives an installer, .msi. Coming from the Mac, I am not fond of installing programs. Anyway, I have (re-)tried the installer, to no avail. Even when I choose to install "just for me", the installer asks me for admin auth, and it fails. Why can't those people just provide a Zip file ?

    – Nicolas Barbulesco
    Jan 6 '15 at 11:41













  • @NicolasBarbulesco So you want to run python without installing? Like a portable version??

    – ᔕᖺᘎᕊ
    Jan 6 '15 at 11:43











  • Yes ! I am looking into @karel's solution.

    – Nicolas Barbulesco
    Jan 6 '15 at 11:45






  • 1





    OK, I didn't see @karel's comments - I agree about using Portable Python, it works fine on a USB for me :)

    – ᔕᖺᘎᕊ
    Jan 6 '15 at 11:46

















This link does not give Python 3, it gives an installer, .msi. Coming from the Mac, I am not fond of installing programs. Anyway, I have (re-)tried the installer, to no avail. Even when I choose to install "just for me", the installer asks me for admin auth, and it fails. Why can't those people just provide a Zip file ?

– Nicolas Barbulesco
Jan 6 '15 at 11:41







This link does not give Python 3, it gives an installer, .msi. Coming from the Mac, I am not fond of installing programs. Anyway, I have (re-)tried the installer, to no avail. Even when I choose to install "just for me", the installer asks me for admin auth, and it fails. Why can't those people just provide a Zip file ?

– Nicolas Barbulesco
Jan 6 '15 at 11:41















@NicolasBarbulesco So you want to run python without installing? Like a portable version??

– ᔕᖺᘎᕊ
Jan 6 '15 at 11:43





@NicolasBarbulesco So you want to run python without installing? Like a portable version??

– ᔕᖺᘎᕊ
Jan 6 '15 at 11:43













Yes ! I am looking into @karel's solution.

– Nicolas Barbulesco
Jan 6 '15 at 11:45





Yes ! I am looking into @karel's solution.

– Nicolas Barbulesco
Jan 6 '15 at 11:45




1




1





OK, I didn't see @karel's comments - I agree about using Portable Python, it works fine on a USB for me :)

– ᔕᖺᘎᕊ
Jan 6 '15 at 11:46





OK, I didn't see @karel's comments - I agree about using Portable Python, it works fine on a USB for me :)

– ᔕᖺᘎᕊ
Jan 6 '15 at 11:46











-1














There is a difference from Linux to Windows.
On Linux you would type like this:



python3 script.py


While on Windows (once you have Python installed) chances are you would type:



py -3 script.py


Comparing to py -2 script.py that would run Python 2.





Note: On Windows python or python.exe would call the latest version of Python you have installed.






share|improve this answer





















  • 1





    Huh, aren't the Windows binaries called python.exe? Where did you get py from?

    – slhck
    Jan 11 at 12:58











  • I don't care, I just use it with py when I need to specify the version, but python or python.exe still works.

    – prosti
    Jan 11 at 15:48













  • So it's not really required. That said, this seems to be a new feature with version 3.6: docs.python.org/3/using/windows.html

    – slhck
    Jan 11 at 21:21


















-1














There is a difference from Linux to Windows.
On Linux you would type like this:



python3 script.py


While on Windows (once you have Python installed) chances are you would type:



py -3 script.py


Comparing to py -2 script.py that would run Python 2.





Note: On Windows python or python.exe would call the latest version of Python you have installed.






share|improve this answer





















  • 1





    Huh, aren't the Windows binaries called python.exe? Where did you get py from?

    – slhck
    Jan 11 at 12:58











  • I don't care, I just use it with py when I need to specify the version, but python or python.exe still works.

    – prosti
    Jan 11 at 15:48













  • So it's not really required. That said, this seems to be a new feature with version 3.6: docs.python.org/3/using/windows.html

    – slhck
    Jan 11 at 21:21
















-1












-1








-1







There is a difference from Linux to Windows.
On Linux you would type like this:



python3 script.py


While on Windows (once you have Python installed) chances are you would type:



py -3 script.py


Comparing to py -2 script.py that would run Python 2.





Note: On Windows python or python.exe would call the latest version of Python you have installed.






share|improve this answer















There is a difference from Linux to Windows.
On Linux you would type like this:



python3 script.py


While on Windows (once you have Python installed) chances are you would type:



py -3 script.py


Comparing to py -2 script.py that would run Python 2.





Note: On Windows python or python.exe would call the latest version of Python you have installed.







share|improve this answer














share|improve this answer



share|improve this answer








edited Jan 11 at 15:51

























answered Jan 11 at 12:29









prostiprosti

993




993








  • 1





    Huh, aren't the Windows binaries called python.exe? Where did you get py from?

    – slhck
    Jan 11 at 12:58











  • I don't care, I just use it with py when I need to specify the version, but python or python.exe still works.

    – prosti
    Jan 11 at 15:48













  • So it's not really required. That said, this seems to be a new feature with version 3.6: docs.python.org/3/using/windows.html

    – slhck
    Jan 11 at 21:21
















  • 1





    Huh, aren't the Windows binaries called python.exe? Where did you get py from?

    – slhck
    Jan 11 at 12:58











  • I don't care, I just use it with py when I need to specify the version, but python or python.exe still works.

    – prosti
    Jan 11 at 15:48













  • So it's not really required. That said, this seems to be a new feature with version 3.6: docs.python.org/3/using/windows.html

    – slhck
    Jan 11 at 21:21










1




1





Huh, aren't the Windows binaries called python.exe? Where did you get py from?

– slhck
Jan 11 at 12:58





Huh, aren't the Windows binaries called python.exe? Where did you get py from?

– slhck
Jan 11 at 12:58













I don't care, I just use it with py when I need to specify the version, but python or python.exe still works.

– prosti
Jan 11 at 15:48







I don't care, I just use it with py when I need to specify the version, but python or python.exe still works.

– prosti
Jan 11 at 15:48















So it's not really required. That said, this seems to be a new feature with version 3.6: docs.python.org/3/using/windows.html

– slhck
Jan 11 at 21:21







So it's not really required. That said, this seems to be a new feature with version 3.6: docs.python.org/3/using/windows.html

– slhck
Jan 11 at 21:21




















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