The shebang line #! python3 tells your computer that you want to run the script using Python 3.
#! python3
print('Hello World')
| OS | Shebang Line |
|---|---|
| Windows | #! python3 |
| OS X | #! /usr/bin/env python3 |
| Linux | #! /usr/bin/python3 |
Save you file as hello.py in c:\users\[name]\MyPythonScripts
To run your script outside of IDLE, type the following at the command prompt
v3.4
py.exe c:\users\[name]\MyPythonScripts\hello.py
v3.6
python.exe c:\users\[name]\MyPythonScripts\hello.py
Remember to use tab completion. This will save a lot of typing
A batch file can save you a lot of typing by running multiple commands. The batch file you'll make will look like this:
@python z:\it\python\MyPythonScripts\hello.py %*
@pause@ hides the display of the line
%* forward any command line arguments to the python program
pause calls the 'pause.exe' program in Windows
If the script have nothing to display on screen, you can either skip the line @pause or use pythonw/ pyw instead of python/py
Use Win+R to open the Windows Run Dialog, type
python c:\users\[name]\MyPythonScripts\hello.bator with no file extension 'bat'
python c:\users\[name]\MyPythonScripts\helloYou can shorten the command to type at the Windows Run Dialog or Command Line by adding the directory containing your python scripts in your PATH environment variable.
Open the Windows Run Dialog:
Win+RRun the script 'hello.bat': hello
Command line arguments can be accessed via variable sys.argv
Modify the hello.py as follows and save the file
#! python3
print('Hello World')
import sys
print(sys.argv)
Run hello arg1 arg2 at Windows Run Dialog and you'll get the following output
Hello World
['[path]\hello.py', 'arg1', 'arg2']
Press any key to continue . . .