Execute a block of python code with exec, capturing all its output?

Question

什么是执行一堆python代码的好方法，比如exec mycode ，并将它打印到stdout的所有内容捕获到字符串中？

Answer 1

Try replacing the default sys.stdout, like in this snippet:

import sys
from StringIO import StringIO

buffer = StringIO()
sys.stdout = buffer

exec "print 'Hello, World!'"

#remember to restore the original stdout!
sys.stdout = sys.__stdout__

print buffer.getvalue()