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lesson12-1
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Commit
e773fae6
authored
Nov 03, 2020
by
BellCodeEditor
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diy.py
diy.py
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e773fae6
# 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'
#创建或打开文件
file1
=
open
(
r'C:\Users\Administrator\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
file1
.
close
()
#创建或打开文件
# file1=open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8')
# #写入数据
# file1.write('小贝:14本\n')
# file1.write('诺依:18本\n')
# #关闭
# file1.close()
# #追加写入
# with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file1:
# file1.write('悟空:10本\n')
# file1.write('八戒:16本\n')
# #读取文件
# with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file1:
# #for循环遍历
# for date in file1:
# if '八戒:16本' in date:
# print("数据在里面")
#创建空变量
new_date
=
''
#读取文件
with
open
(
r'C:\Users\Administrator\Desktop\book.txt'
,
'r'
,
encoding
=
'utf-8'
)
as
file1
:
#for循环遍历文件
for
date
in
file1
:
#查找并替换
if
'小兰:12本'
in
date
:
date
=
date
.
replace
(
'小兰:12本'
,
'小兰:14本'
)
if
'小丽:11本'
in
date
:
date
=
date
.
replace
(
'小丽:11本'
,
'小丽:10本'
)
new_date
+=
date
#写入文件
with
open
(
r'C:\Users\Administrator\Desktop\book.txt'
,
'w'
,
encoding
=
'utf-8'
)
as
file1
:
file1
.
write
(
new_date
)
#读取文件
with
open
(
r'C:\Users\Administrator\Desktop\book.txt'
,
'r'
,
encoding
=
'utf-8'
)
as
file1
:
a
=
file1
.
read
()
print
(
a
)
\ No newline at end of file
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