Python:读文件和写文件
最后更新于：2022-04-01 19:39:28
1. 写文件
~~~
#! /usr/bin/python3
'makeTextFile.py -- create text file'
import os
def write_file():
"used to write a text file."
ls = os.linesep
#get filename
fname = input("Please input filename:")
while True:
if os.path.exists(fname):
print("Error: '%s' already exists" % fname)
fname = input("Please input filename:")
else:
break
#get file conent linesOnScreen
all = []
print("\nEnter lines ('.' to quit).\n")
while True:
entry = input('>')
if entry == '.':
break
else:
all.append(entry)
try:
fobj = open(fname, 'w')
except IOError as err:
print('file open error: {0}'.format(err))
fobj.writelines(['%s%s' % (x, ls) for x in all])
fobj.close()
print('WRITE FILE DONE!')
return fname
~~~
2. 读文件
~~~
#! /usr/bin/python3
'readTextFile.py -- read and display text file.'
def read_file(filename):
'used to read a text file.'
try:
fobj = open(filename, 'r')
except IOError as err:
print('file open error: {0}'.format(err))
else:
for eachLine in fobj:
print(eachLine)
fobj.close()
~~~
3. 主程序
~~~
#! /usr/bin/python3
'write_and_read_file.py -- write and read text file.'
import makeTextFile
import readTextFile
if __name__ == '__main__':
#wrie file
filename = makeTextFile.write_file()
#read file
readTextFile.read_file(filename)
~~~
4.运行结果
~~~
Python 3.2.2 (default, Sep 4 2011, 09:51:08) [MSC v.1500 32 bit (Intel)] on winxp-duanyx, Standard
>>> Please input filename:d:\testpython.log
Enter lines ('.' to quit).
>this is a test file.
>ok ,let us input . to end the content input.
>.
WRITE FILE DONE!
this is a test file.
ok ,let us input . to end the content input.
>>>
~~~
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