extracting numbers with decimal places from a string
__peter__ at web.de
Mon Jan 12 01:09:21 CET 2015
Thomas 'PointedEars' Lahn wrote:
> Joel Goldstick wrote:
>> On Sun, Jan 11, 2015 at 6:12 PM, Thomas 'PointedEars' Lahn
>> <PointedEars at web.de> wrote:
>>> Joel Goldstick wrote:
>>>> Am I missing something.
>>> You are missing a leading space character because in the string the
>>> comma was followed by one.
>> I see that now. Performing float on each element of the list will
>> take care of that, or I guess .strip() on each first.
> As I showed, .strip() is unnecessary. But float() is always necessary for
> computing the sum and suffices indeed together with s.split() if s is just
> a comma-separated list of numeric strings with optional whitespace leading
> and trailing the comma:
> print(sum(map(lambda x: float(x), s.split(',')))
> Please trim your quotes to the relevant minimum.
Hm, can you explain what this
lambda x: float(x)
is supposed to achieve? I mean other than to confuse a newbie...
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