print()

[mattia]

Il Sun, 18 Oct 2009 20:04:11 -0200, Gabriel Genellina ha scritto:

> En Sun, 18 Oct 2009 10:35:34 -0200, mattia <gervaz at gmail.com> escribió:
> 
>> Il Sat, 17 Oct 2009 10:02:27 -0400, Dave Angel ha scritto:
>>> mattia wrote:
>>>> Il Fri, 16 Oct 2009 21:04:08 +0000, mattia ha scritto:
>>>>
>>>> Another question (always py3). How can I print only the first number
>>>> after the comma of a division?
>>>> e.g. print(8/3) --> 2.66666666667
>>>> I just want 2.6 (or 2.66)
>>>>
>>> x = 8/3
>>> dummy0=dummy1=dummy2=42
>>> s = "The answer is approx. {3:07.2f} after rounding".format(dummy0,
>>> dummy1, dummy2, x)
>>> print(s)
>>>
>>> will print out the following:
>>>
>>> The answer is approx. 0002.67 after rounding
>>
>> Yes, reading the doc I've come up with s = "%(0)03.02f%(1)s done" %
>> {"0": 100.0-100.0*(size/tot), "1": "%"} but to it is not a good idea to
>> use a dict here..
> 
> No need for a dict, you could use instead:
> 
> s = "%03.02f%s done" % (100.0-100.0*(size/tot), "%")
> 
> or (%% is the way to embed a single %):
> 
> s = "%03.02f%% done" % (100.0-100.0*(size/tot),)
> 
> or even:
> 
> s = "%03.02f%% done" % (100.0-100.0*(size/tot))
> 
> but the new str.format() originally suggested by Dave Angel is better:
> 
> s = "{0:03.02f}% done".format(100.0-100.0*(size/tot))
> 
> (BTW, why 03.02f? The output will always have at least 4 chars, so 03
> doesn't mean anything... Maybe you want {0:06.2f} (three places before
> the decimal point, two after it, filled with 0's on the left)?)

No need of 03, you are right, thanks.