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Showing with 6 additions and 7 deletions
diy.py
file=open(r'C:\book.txt','a',encoding='utf-8') with open(r'c:\book.txt','r',encoding='utf-8')as filel:
file.write('小强:10本\n') for data in filel:
file.write('李明:10本\n') if'小强:10本'in data:
file.close() print('小强数据在文件中')
with open(r'c:\book.txt','a',encoding='utf-8')as file: if'小兰:12本'in data:
file.write('小强:10本\n') print('小强数据在文件中')
file.write('李明:10本\n')
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