python 中异常处理

Python中的异常由 try-except [exceptionname] 块处理，例如：

def some_function():

try:

# Division by zero raises an exception

10 / 0

except ZeroDivisionError:

print "Oops, invalid."

else:

# Exception didn‘t occur, we‘re good.

pass

finally:

# This is executed after the code block is run

# and all exceptions have been handled, even

# if a new exception is raised while handling.

print "We‘re done with that."

>>> some_function()

Oops, invalid.

We‘re done with that.

try:

except:

else:

finally: 不管触不触发except都要执行的这一步