mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-07-24 11:44:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

Part of SF patch #1513870 (the still relevant part) -- add reduce() to

Browse source 
functools, and adjust docs etc.
This commit is contained in:
Guido van Rossum 2006-08-26 20:49:04 +00:00
parent 6a2a2a0832
commit 0919a1a07b
11 changed files with 168 additions and 78 deletions
Download patch file Download diff file Expand all files Collapse all files

14
Doc/howto/doanddont.tex
View file

@ -289,19 +289,7 @@ There are also many useful builtin functions people seem not to be
aware of for some reason: \function{min()} and \function{max()} can
find the minimum/maximum of any sequence with comparable semantics,
for example, yet many people write their own
\function{max()}/\function{min()}. Another highly useful function is
\function{reduce()}. A classical use of \function{reduce()}
is something like
\begin{verbatim}
import sys, operator
nums = map(float, sys.argv[1:])
print reduce(operator.add, nums)/len(nums)
\end{verbatim}
This cute little script prints the average of all numbers given on the
command line. The \function{reduce()} adds up all the numbers, and
the rest is just some pre- and postprocessing.
\function{max()}/\function{min()}.
On the same note, note that \function{float()}, \function{int()} and
\function{long()} all accept arguments of type string, and so are