小文件：
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#coding=utf-8#author: walker#date: 2013-12-30#function: 按行读取小文件all_lines = []
try:
file = open('txt.txt', 'r')
all_lines = file.readlines()
except IOError as err:
print('File error: ' + str(err))
finally:
if 'file' in locals():
file.close()
for line in all_lines:
print(line)
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大文件：
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#coding=utf-8#author: walker#date: 2013-12-30#function: 按行读取大文件try:
file = open('txt.txt', 'r')
for line in file:
print(line)
except IOError as err:
print('File error: ' + str(err))
finally:
if 'file' in locals():
file.close()
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相关阅读：Python开关文件的两种方式
*** walker ***
本文转自walker snapshot博客51CTO博客，原文链接http://blog.51cto.com/walkerqt/1346770如需转载请自行联系原作者
RQSLT