How to Build a Python Profanity Filter for Game Chat with OOP and Logging

This article demonstrates how to implement a profanity‑filter for in‑game chat using Python. It starts by defining a list of prohibited words (the "dirty" list) and shows how to replace any occurrence in a player's message with asterisks using str.replace.

Next, a Player class is introduced to encapsulate player data and behavior. The class includes an __init__ method to store the player's name, a talk method that reads input, replaces profanity, and prints the sanitized message, and a log method that writes the timestamped chat record to a file.

class Player(object):
    def __init__(self, name):
        self.name = name
        self.string = ''

    def talk(self):
        self.string = raw_input("input-write:")
        self.string = self.string.replace('fuck', '*')
        # add more replacements as needed
        print "公屏显示:%s--%s" % (self.name, self.string)
        self.log()

    def log(self):
        with open('zanghua.txt', 'a') as f:
            f.write("{}  {}-speak:{}
".format(time, self.name, self.string))

The script creates several Player instances (e.g., t1 = Player('white')) and enters an interactive loop where the user selects a player and enters chat messages. The loop uses raw_input to get the player's choice and calls the corresponding talk method. It also demonstrates how to exit the loop.

while True:
    n = raw_input('change Player:')
    if n == '1':
        t1.talk()
    elif n == '2':
        t2.talk()
    elif n == '3':
        t3.talk()
    elif n == 'q':
        print 'Bye'
        break
    else:
        print 'Invalid input'

The article includes sample output screenshots (omitted here) and notes that the log file zanghua.txt must exist beforehand. It also suggests possible extensions such as limiting the number of profanity violations, muting users, or rotating logs.