diy.py
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# 写入同学们的捐赠明细:'小兰:12本'、'小丽:11本'、'李文:9本'、'张伟:16本'
#a = open(r"C:\Users\Administrator\Desktop\test.txt",'w',encoding ='utf-8')
#.awrite('小兰:12本\n')
#a.write('小丽:11本\n')
#a.write('小丽:11本\n')
# with open(r"C:\Users\Administrator\Desktop\test.txt",'w',encoding ='utf-8') as a:
# a.write('小兰:12本\n')
# a.write('小丽:11本\n')
# a.write('小丽:11本\n')
with open(r"C:\Users\Administrator\Desktop\test.txt",'r',encoding ='utf-8') as a:
for data in a:
if'小兰:12本'in data:
data=data.replace("小兰:12本,小兰:13本")
new_data +=data
with open(r"C:\Users\Administrator\Desktop\test.txt",'w',encoding ='utf-8') as a:
a.write(new_data)
with open(r"C:\Users\Administrator\Desktop\test.txt",'r',encoding ='utf-8') as a:
c=a.read()
print(c)
a.close()