Set up Python on Windows to not type "python" in cmd

user_1159747 0
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How do I have to configure so that I don't have to type python script.py but simply script.py in CMD on Windows?

I added my python directory to %PATH% that contains python.exe but still scripts are not run correctly.

I tried it with django-admin.py Running django-admin.py startproject mysite gives me Type 'django-admin.py help <subcommand>' for help on a specific subcommand. Using python in front of it processes the command correctly.

What's the problem here?

cmd path windows python
4 Answers

From Python 3.3 a launcher for Windows is included: py (and pyw for GUI or non-UI applications)

which aids in locating and executing of different Python versions. It allows scripts (or the command-line) to indicate a preference for a specific Python version, and will locate and execute that version.

Unlike the PATH variable, the launcher will correctly select the most appropriate version of Python. It will prefer per-user installations over system-wide ones, and orders by language version rather than using the most recently installed version.

Python installer links Python's file extensions to open verb by default, so you can run a python file simply by typing its name (and args if needed).

Caveat: be aware of the differences between python.exe and pythonw.exe

Among other advantages, Windows launcher reads 'nix shebangs, so you can specify Python version or python.exe's command line arguments

You can check this running this script (supposing py3 as default):

#! /usr/bin/python2.7 -i
import sys
print(sys.version)
  • myscript.py: runs with py, launches python2.7 and enters in interactive mode after finished (-i, great option for testing and debugging).
  • myscript.py -3: runs with py, launches python3 and keeps interactive mode.
  • python myscript.py: runs with default python runtime, no interactive mode.

You can change this default association with ftype, but I would strongly recommend:

You can easily associate other verbs (like edit, test, debug...) to these files.

In addition, you can omit Python's extensions to run a file in a terminal by adding them to PATHEXT environment variable ordered by preference. (You must re-open the terminal for the change to take effect).

setx PATHEXT %PATHEXT%;.PYC;.PYZ;.PY

user_37754930

I also had the same issue... I could fix it by re-associating *.py files with the python launcher.

  1. Right click on a *.py file and open its properties.
  2. Click on the Change button of the "Opens with..." section
  3. Select More apps -> Look for another app on this PC.
  4. Then browse to your windows folder (by default: "C:\Windows")
  5. Select "py.exe"
user_17165830

i did a try with :

C:\> assoc .py=Python
C:\> ftype Python="C:\tools\python\python.exe %1 %*"

It didnt work for me. so i did a ftype search :

ftype | find "Python"
Python="c:\tools\python\python.exe" %1 %*
Python.ArchiveFile="C:\Windows\py.exe" "%L" %*
Python.NoConArchiveFile="C:\Windows\pyw.exe" "%L" %*

Solved my problem with a slightly other ftype command :

ftype Python="c:\tools\python\python.exe" "%L" %*
user_40982750
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