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:

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.
Can I just run python and find a way to send commands to the interpreter? Maybe using subprocesses?
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?
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.
Can ''' (three single-quotes) or """ (three douuble-quotes) syntax be used that are specially interpreted by Batch? Like here?

npocmaka · Accepted Answer · 2022-03-07 10:29:14Z

4

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.

edited Mar 7, 2022 at 10:29

answered Mar 7, 2022 at 3:38

npocmaka

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Comments

Chris · Accepted Answer · 2023-09-10 22:13:21Z

Use this simple python gui to convert all py scripts in folder to bat files :

0<0# : ^
''' 
@echo off
set script=%~f0
python -x "%script%" %*
exit /b 0/b 0
'''

from tkinter import *
from tkinter import filedialog
import os

def browse_folder():
    foldername = filedialog.askdirectory(initialdir=input_entry.get())
    input_entry.delete(0, END)
    input_entry.insert(0, foldername)

def convert_files():
    input_path = input_entry.get()
    if os.path.isdir(input_path):
        # Input path is a directory, so convert all Python files in the directory
        for filename in os.listdir(input_path):
            if filename.endswith(".py"):
                convert_single_file(os.path.join(input_path, filename))

def convert_single_file(filename):
    if filename:
        with open(filename, 'r') as f:
            content = f.read()
        # Add the batch file code at the beginning of the file
        content = '0<0# : ^\n\'\'\' \n@echo off\nset script=%~f0\npython -x "%script%" %*\nexit /b 0\n\'\'\'\n' + content
        # Get the base name of the original file
        base_name, _ = os.path.splitext(os.path.basename(filename))
        # Save the modified content as a batch file
        with open(os.path.join(os.path.dirname(filename), f"{base_name}.bat"), 'w') as f:
            f.write(content)

root = Tk()
root.title("Python to Batch Converter")

# Scale the GUI by a factor of 4
root.tk.call('tk', 'scaling', 4.0)

input_label = Label(root, text="Input folder:")
input_label.pack()

input_entry = Entry(root)
input_entry.pack()

browse_folder_button = Button(root, text="Browse Folder", command=browse_folder)
browse_folder_button.pack()

convert_button = Button(root, text="CONVERT", command=convert_files)
convert_button.pack()

root.mainloop()

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