Python重定向到文件
1.方式1
__file__ = open(r'log.txt', 'a')
print >>__file__, "hello, world!"
__file__.close()
2.方式2
__stdout__ = sys.stdout
sys.stdout = open(r'log.txt', 'a')
print "hello, world!"
sys.stdout.close()
sys.stdout = __stdout__
3.方式3
#-*- coding:utf8 -*-
import sys
class stdout:
def __init__(self):
self.buff = []
self.__file__ = open(r'log.txt', 'a')
self.__stdout__ = sys.stdout
def write(self, s):
self.buff.append(s)
self.__file__.write(s)
self.__file__.flush()
self.__stdout__.write(s)
def flush(self):
self.buff = []
self.__stdout__.flush()
def close(self):
self.__file__.close()
def reset(self):
sys.stdout = self.__stdout__
if __name__ == '__main__':
sys.stdout = stdout()
for i in xrange(10):
print "hello, world!"
sys.stdout.close()
#sys.stdout.__file__.close()
sys.stdout.reset()
#sys.stdout = sys.stdout.__stdout__
print "im back!"
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