敏感词文本文件 filtered_words.txt，当用户输入敏感词语，则用星号 * 替换，例如当用户输入“北京是个好城市”，则变成“**是个好城市”。

filtered_words.txt：

filtered_words.txt

#-*-coding: utf-8-*-

class Input(object):

def __init__(self):

self.filtered_words = list()

self.in_string = ''

self.out_string = ''

self.load_filtered_words()

def load_filtered_words(self, filename='filtered_words.txt'):

with open(filename, 'r') as file:

for line in file.readlines():

self.filtered_words.append(line.strip())

def filter_words(self):

self.out_string = self.in_string

for word in self.filtered_words:

if word in self.out_string:

self.out_string = self.out_string.replace(word, len(word)*'*')

def user_input(self, filename):

if not filename:

self.in_string = input('>')

else:

with open(filename, 'r') as f:

self.in_string = f.read()

def std_output(self):

self.filter_words()

print(self.out_string)

if __name__ == '__main__':

i = Input()

i.user_input('')

i.std_output()

运行结果：