This is useful when you want to print stack traces under program control, such as in a “wrapper” around the interpreter.
http://docs.python.org/library/traceback.html什么是wrapper?
file 的newlines属性始终为None
This is useful when you want to print stack traces under program control, such as in a “wrapper” around the interpreter.
http://docs.python.org/library/traceback.html什么是wrapper?
file 的newlines属性始终为None