python – 如何输出到控制台和文件？

import sys

class Tee(object):
    def __init__(self, *files):
        self.files = files
    def write(self, obj):
        for f in self.files:
            f.write(obj)
            f.flush() # If you want the output to be visible immediately
    def flush(self) :
        for f in self.files:
            f.flush()

f = open('out.txt', 'w')
original = sys.stdout
sys.stdout = Tee(sys.stdout, f)
print "test"  # This will go to stdout and the file out.txt

#use the original
sys.stdout = original
print "This won't appear on file"  # Only on stdout
f.close()

打印>> python中的xyz将在xyz中使用write()函数.您可以使用自己的自定义对象.或者,你也可以让sys.stdout引用你的对象,在这种情况下,即使没有>> xyz它也会被编辑.