TGST.py

# file1=open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8')
# file1.write('小兰:12本\n')
# file1.write('小丽:11本\n')
# file1.write('李文:9本\n')
# file1.write('张伟:16本\n')
# file1.close()
file1=open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8')
file1.write('小兰:12本\n')
file1.write('小丽:11本\n')
file1.write('李文:9本\n')
file1.write('张伟:16本\n')
file1.close()


with open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8') as file1:
   for i in file1:
       if i == '小丽:11本':
            i=i.repiace('小丽:11本','小丽:14本')
            print(i)