petitemm-to-amk.py

import re
import sys

def exitPrompt(string="Press enter to exit. . ."):
    input(string)
    exit()
    
def error(string, quit=True):
    if (quit): exitPrompt("Error: %s" % string)
    else: print(string)

def main():
    if (len(sys.argv) > 1):
        if (len(sys.argv) > 2):
            error("Too many arguments.")
        filename = sys.argv[1]
    else:
        filename = str(input("Enter filename: "))
    file = open(filename, 'r')
    lines = file.readlines()
    file.close()
    file = open(filename, 'w')
    for line in lines:
        line = re.sub(r"(?<=\^)[a-g][\+\-]?", '', line, flags=re.IGNORECASE)
        file.write(line)
    file.close()
    print("Done.")
    exitPrompt()
        
if (__name__ == "__main__"):
    main()