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Commit a73205f4 authored 4 years ago by BellCodeEditor's avatar BellCodeEditor
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parent dc22b1a3
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  • diy.py
  • diy1-写入捐赠明细.py
  • diy2-追加数据.py
  • diy3-遍历查找数据.py
  • diy4-修改数据.py
diy.py 0 → 100644
View file @ a73205f4
with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
    for data in file1:
        if '小强:10本' in data:
            print('小强数据在文件中')
\ No newline at end of file
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diy1-写入捐赠明细.py 0 → 100644
View file @ a73205f4
# 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'
# 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'
# 打开、创建文件,这里的路径要换成自己哦~
file1= open(r'C:\Users\CM\Desktop\book.txt','w',encoding='utf-8')
# 写入数据
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')
# 关闭文件
file1.close()
\ No newline at end of file
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diy2-追加数据.py 0 → 100644
View file @ a73205f4
# 补充捐赠明细,两种写法:
# 补充捐赠明细,两种写法:
# 补充数据的第一种写法:
file= open(r'C:\Users\CM\Desktop\book.txt','a',encoding='utf-8')
file.write('小强:10本\n')
file.write('李明:15本\n')
file.close()
# 补充数据的第二种写法:
with open(r'C:\Users\CM\Desktop\book.txt','a',encoding='utf-8') as file:
file.write('小强:10本\n')
file.write('李明:15本\n')
\ No newline at end of file
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diy3-遍历查找数据.py 0 → 100644
View file @ a73205f4
# 完成修改数据前的遍历和条件判断,找下'小强:10本'在不在数据中,以及小兰的数据'小兰:12本'在不在
# 完成修改数据前的遍历和条件判断,找下'小强:10本'在不在数据中,以及小兰的数据'小兰:12本'在不在
with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
for data in file1:
if '小强:10本' in data:
print('小强数据在文件中')
if '小兰:12本'in data:
print('小兰数据在文件中')
\ No newline at end of file
This diff is collapsed. Click to expand it.
diy4-修改数据.py 0 → 100644
View file @ a73205f4
# 修改小强的数据为11本,以及小兰的数据'小兰:12本'修改为14本,最后读取修改后的数据
# 修改小强的数据为11本,以及小兰的数据'小兰:12本'修改为14本,最后读取修改后的数据
new_data=''
with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
for data in file1:
if '小强:10本'in data:
data=data.replace('小强:10本','小强:11本')
if '小兰:12本'in data:
data=data.replace('小兰:12本','小兰:14本')
new_data +=data
with open(r'C:\Users\CM\Desktop\book.txt','w',encoding='utf-8') as file1:
file1.write(new_data)
with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
a=file1.read()
print(a)
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