python3.4.4怎么用_python3.4使用文件
源碼：
poem='''\
Programming is fun
When the work is done
if you wanna make your work also fun:
use Python!
'''
f=file('poem.txt','w') # open for 'w'riting
f.write(poem) # write text to file
f.close() # close the file
f=file('poem.txt')
# if no mode is specified, 'r'ead mode is assumed by default
while True:
line=f.readline()
if len(line)==0: # Zero length indicates EOF
break
print(line)
# Notice comma to avoid automatic newline added by Python
f.close() # close the file
錯誤提示：
Traceback (most recent call last):
File "C:\Working\Downloads\using_file(1).py", line 11, in
f=file('poem.txt','w') # open for 'w'riting
NameError: name 'file' is not defined
解決方法：
將file()改成open(),看來python3不再支持file().
如：
poem='''\
Programming is fun
When the work is done
if you wanna make your work also fun:
use Python!
'''
f = open('c:/working/amy/poem.txt','w') # open for 'w'riting
f.write(poem) # write text to file
f.close() # close the file
f = open('c:/working/amy/poem.txt')
# if no mode is specified, 'r'ead mode is assumed by default
while True:
line=f.readline()
if len(line)==0: # Zero length indicates EOF
break
print(line)
# Notice comma to avoid automatic newline added by Python
f.close() # close the file
運行結果：
>>> ================================ RESTART ================================
>>>
Programming is fun
When the work is done
if you wanna make your work also fun:
use Python!
總結
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