Execute multi-line python code inside Windows Batch script

Question

I want to use multiline python statements inside Windows Batch script.

For example, my BAT script is:

@echo off
echo "Executing Python Code..."
goto python_code

:python_code_back
echo "Executed Python Code!"

pause
exit()

:python_code
python -c print("""Python code running""")
goto python_code_back

python -c works fine for single statements. But let my python code be embedded is:

import random
num = input("Enter Number: ")
num = int(num)
if num%2 == 0:
  print("Even")
else:
  print("Odd")
  
exit()

How do I embed this Python code into my Windows Batch Script without calling another python script or making temporary python files?

I have some options that I have gone through:

1. Use python -c with semicolons: How do I intend the code like if statements above? If there are ways, one might still want clean code in multiple lines but I would appreciate the answer for this.

2. Can I just run python and find a way to send commands to the interpreter? Maybe using subprocesses?

3. Is there any way I can build a multi-line string that has the python code and then send it to the python interpreter or python command?

4. In bash we could use EOF to keep multi-lines clean. Is there any similar method to this in BAT? I think no because people have proposed many workarounds to this.

5. Can ''' (three single-quotes) or """ (three douuble-quotes) syntax be used that are specially interpreted by Batch? Like here?

Answer 1

Try like this:

0<0# : ^
''' 
@echo off
echo batch code
python %~f0 %* 
exit /b 0
'''

import random
import sys



def isOdd():
    print("python code")
    num = input("Enter Number: ")
    num = int(num)
    if num%2 == 0:
      print("Even")
    else:
      print("Odd")

def printScriptName():
    print(sys.modules['__main__'].__file__)
    
eval(sys.argv[1] + '()')
exit()

Example usage:

call pythonEmbeddedInBatch.bat isOdd
call pythonEmbeddedInBatch.bat printScriptName

The first line will be boolean expression in python ,but a redirection to an empty label in batch. The rest of the batch code will be within multiline python comment.