run python script directly from command line

by

Universal running of Python scripts

You can pretty much universally run without the shebang (#!) with

python myscript.py

Or nearly equivalently (it places the current directory on your path and executes the module named myscript) (preferably do this!):

python -m myscript

from the command line, as long as you have Python installed and on your path environment variable (i.e. set to run with python, which, if installed, would typically be the case).

Shebangs (#!) are a Unix thing.

The shebang, as you’re using it, is typically for running on a Unix platform (typically Apple or Linux). Windows would typically require cygwin to use the shebang.

You can usually default to whatever python is available on your system path with:

#!/usr/bin/env python

Assuming you’re on a Unix, you might try other locations for your python setup, like:

#!/usr/bin/python

Muddling through

You can see what python you’re currently using by using the unix which command, so if you want to see where your python is coming from, use this command:

which python

or on Windows (cygwin probably can run the shebang):

where python

On Linux/Unix, you’ll need execution perms to run the file as well, in that manner. Use chmod 

chmod +x myscript.py

(chmod also may apply to Cygwin in Windows)

If you’re not running as root, you may require sudo, and that would be 

sudo chmod +x myscript.py

And then attempt to run (within the same directory) with

./myscript.py

More Related Contents:

  1. Why do people write #!/usr/bin/env python on the first line of a Python script?
  2. Should I put #! (shebang) in Python scripts, and what form should it take?
  3. subprocess.call() arguments ignored when using shell=True w/ list [duplicate]
  4. how to run python script without typing ‘python …’
  5. Python – Activate conda env through shell script
  6. Process substitution not allowed by Python’s subprocess with shell=True?
  7. How to implement common bash idioms in Python? [closed]
  8. Call Python script from bash with argument
  9. Running a bash script from a cronjob fails with “No such file or directory”
  10. Conda command working in command prompt but not in bash script
  11. How to store the result of an executed shell command in a variable in python? [duplicate]
  12. Change working directory in shell with a python script
  13. env: python\r: No such file or directory
  14. Calling a Python function from a shell script
  15. Enhancement of unix script [closed]
  16. Execute python script while open terminal
  17. Running shell command and capturing the output
  18. Some Unix commands fail with ” not found”, when executed using Python Paramiko exec_command
  19. How to save a Python interactive session?
  20. Run multiple python scripts concurrently
  21. How do I add tab completion to the Python shell?
  22. Can not activate a virtualenv in GIT bash mingw32 for Windows
  23. Running bash script from within python
  24. How to run a python file using cron jobs
  25. How do you install lxml on OS X Leopard without using MacPorts or Fink?
  26. Python: Convert PDF to DOC
  27. A Python script that activates the virtualenv and then runs another Python script?
  28. Cannot find the file specified when using subprocess.call(‘dir’, shell=True) in Python
  29. How to execute a script remotely in Python using SSH?
  30. Python | change text color in shell [duplicate]

Leave a Comment