Login and get codingMeet another gem in the standard library:
functools
, which contains tools for functional-style programming.In this Bite you will play with its useful
partial()
function which - as per PEP 309 - lets you construct variants of existing functions that have some of the parameters filled in.The original PEP (Python 2) also shows a small but realistic example:
import functools def log (message, subsystem): "Write the contents of 'message' to the specified subsystem." print '%s: %s' % (subsystem, message) ... server_log = functools.partial(log, subsystem='server') server_log('Unable to open socket')In this Bite you will apply this concept to the
round
builtin:>>> round(10.42342, 2) 10.42Write two
partial
s to add the default behavior of rounding to 0 and 4 places respectively.See the template code below. If you get stuck maybe this article will help you.
Good luck and keep calm and code in Python!