How to pass function in terminal with file path as an argument

Question

#I am typing this in terminal or in cmd --> #python pract33.py main "C:\Users\Sharad\Desktop\New folder (2)\GSTR3B.pdf"

#I also know many methods like using "\" or "/" or r etc etc but want to type only the above command in terminal or in cmd and want output as "1".

#this code is to find whether the PDF is proper or not**

from pdfminer import high_level
import re
import os

def main1(vPath):
    CT = 0
    checkPath = os.path.isfile(vPath)
    try:
        if checkPath:
            if vPath.endswith(".pdf"):
                extracted_text = high_level.extract_text(vPath, "")

            l = extracted_text.split('\n')
            for i in l:
                i = i.rstrip()
                x = re.findall('[A-Za-z0-9]', i)
                if len(x) > 5:
                    CT += 1
                    
            if CT > 20:
                print("1")
            else:
                print("0")
    except OSError:
        pass