First page Back Continue Last page Overview Graphics

Python2 vs. Python3

Python 2 format

Python 3 format

try:

fn()

except IOError, err:

print err

try:

fn()

except IOError as err:

print(err)

try:

fn()

except (IOError, TypeError), err:

print err

try:

fn()

except (IOError, TypeError) as err:

print(err)

Python 2 format	Python 3 format
raise IOError, "file error"	raise IOError("file error")
raise "Spam!"	raise Exception("Spam!")
raise TypeError, msg, tb	raise TypeError.with_traceback(tb)