python捕获stdout输出

python中捕获到stdout的输出，实际上就是把sys.stdout只想到一个打开的文件即可

import StringIO
import string, sys

stdout = sys.stdout

sys.stdout = file = StringIO.StringIO()

print """
According to Gbaya folktales, trickery and guile
are the best ways to defeat the python, king of
snakes, which was hatched from a dragon at the
world's start. -- National Geographic, May 1997
"""

sys.stdout = stdout

print string.upper(file.getvalue())

类似与php中的ob_*系列函数。

It's like comparing apples to oranges.