Python to Batch!



Nikolai asked me how to open a Python interpreter prompt from the console with a certain module already imported. For the record, the Python command line switches tell us that python -i -m module is the way to start the prompt and load module.py. That made me wonder whether I can stuff it all into one batch file, and I came up with the following test.bat:
REM = '''
@COPY %0.bat %0.py
@python %0.py
@DEL %0.py 
@goto :eof ::'''
del REM
for k in range(70):
    print(k)
That script will ignore the first line because it is a comment, then copy itself to test.py, then launch python with this argument. Afterwards, test.py is deleted and the script terminates without looking at any of the following lines. Note that :: is yet another way to comment in Batch. Python, however, will see a script where the variable REM is defined as a multi-line string and deleted right after that. After this little stub, you can put any python code you want. Well. I thought it was funky.

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