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Question about split method

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  Question about split method Robert <rxjwg98@gmail.com> - 2015-12-02 12:37 -0800
    Re: Question about split method Ian Kelly <ian.g.kelly@gmail.com> - 2015-12-02 14:44 -0600
      Re: Question about split method Robert <rxjwg98@gmail.com> - 2015-12-02 13:00 -0800
      Re: Question about split method Peter Pearson <pkpearson@nowhere.invalid> - 2015-12-05 19:29 +0000
        Re: Question about split method Robert <rxjwg98@gmail.com> - 2015-12-05 11:51 -0800
          Re: Question about split method Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-12-05 20:27 +0000
          Re: Question about split method Erik <python@lucidity.plus.com> - 2015-12-05 22:20 +0000

#99913 — Question about split method

Hi,

I learn split method online. When I try to run the line with ss1 beginning,
I don't understand why its output of ss1 and ss2. I have check the help
about split. It looks like that it is a numpy method.
What is the split method parameter (within "  ") for?


Thanks,



...............
ss0="1, 2, 4, 8, 16".split(", ")

ss0
Out[2]: ['1', '2', '4', '8', '16']

ss1="1, 2, 4, 8, 16".split("    , ")

ss1
Out[4]: ['1, 2, 4, 8, 16']

ss2="1, 2, 4, 8, 16".split(",   ")

ss2
Out[9]: ['1, 2, 4, 8, 16']

help(split)
Help on function split in module numpy.lib.shape_base:

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#99914

On Wed, Dec 2, 2015 at 2:37 PM, Robert <rxjwg98@gmail.com> wrote:
> Hi,
>
> I learn split method online. When I try to run the line with ss1 beginning,
> I don't understand why its output of ss1 and ss2. I have check the help
> about split. It looks like that it is a numpy method.
> What is the split method parameter (within "  ") for?
>
>
> Thanks,
>
>
>
> ...............
> ss0="1, 2, 4, 8, 16".split(", ")
>
> ss0
> Out[2]: ['1', '2', '4', '8', '16']
>
> ss1="1, 2, 4, 8, 16".split("    , ")
>
> ss1
> Out[4]: ['1, 2, 4, 8, 16']
>
> ss2="1, 2, 4, 8, 16".split(",   ")
>
> ss2
> Out[9]: ['1, 2, 4, 8, 16']
>
> help(split)
> Help on function split in module numpy.lib.shape_base:

That's just some random function that you've imported into globals by
doing "from numpy import *" or some such. What you're calling in these
examples is a string method, not a global function.

Try help(str.split)

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#99915

On Wednesday, December 2, 2015 at 3:45:34 PM UTC-5, Ian wrote:
> On Wed, Dec 2, 2015 at 2:37 PM, Robert <rxjgmail.com> wrote:
> > Hi,
> >
> > I learn split method online. When I try to run the line with ss1 beginning,
> > I don't understand why its output of ss1 and ss2. I have check the help
> > about split. It looks like that it is a numpy method.
> > What is the split method parameter (within "  ") for?
> >
> >
> > Thanks,
> >
> >
> >
> > ...............
> > ss0="1, 2, 4, 8, 16".split(", ")
> >
> > ss0
> > Out[2]: ['1', '2', '4', '8', '16']
> >
> > ss1="1, 2, 4, 8, 16".split("    , ")
> >
> > ss1
> > Out[4]: ['1, 2, 4, 8, 16']
> >
> > ss2="1, 2, 4, 8, 16".split(",   ")
> >
> > ss2
> > Out[9]: ['1, 2, 4, 8, 16']
> >
> > help(split)
> > Help on function split in module numpy.lib.shape_base:
> 
> That's just some random function that you've imported into globals by
> doing "from numpy import *" or some such. What you're calling in these
> examples is a string method, not a global function.
> 
> Try help(str.split)

Thanks. I didn't know numpy has been automatically imported, not by me.
And your demo line code is helpful.

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#100043

On Wed, 2 Dec 2015 14:44:30 -0600, Ian Kelly <ian.g.kelly@gmail.com> wrote:
> On Wed, Dec 2, 2015 at 2:37 PM, Robert <rxjwg98@gmail.com> wrote:
[snip]
>> ss0="1, 2, 4, 8, 16".split(", ")
[snip]
> Try help(str.split)

Or if, like me, you can't remember the magic word "str", ask:

help("".split)

and you know you're asking about the right "split".

-- 
To email me, substitute nowhere->runbox, invalid->com.

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#100046

On Saturday, December 5, 2015 at 2:29:28 PM UTC-5, Peter Pearson wrote:
> On Wed, 2 Dec 2015 14:44:30 -0600, Ian Kelly <ian.g.kelly@gmail.com> wrote:
> > On Wed, Dec 2, 2015 at 2:37 PM, Robert <rxjwg98@gmail.com> wrote:
> [snip]
> >> ss0="1, 2, 4, 8, 16".split(", ")
> [snip]
> > Try help(str.split)
> 
> Or if, like me, you can't remember the magic word "str", ask:
> 
> help("".split)
> 
> and you know you're asking about the right "split".
> 
> -- 
> To email me, substitute nowhere->runbox, invalid->com.

Thanks for your smart method.

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#100047

On 05/12/2015 19:51, Robert wrote:
> On Saturday, December 5, 2015 at 2:29:28 PM UTC-5, Peter Pearson wrote:
>> On Wed, 2 Dec 2015 14:44:30 -0600, Ian Kelly <ian.g.kelly@gmail.com> wrote:
>>> On Wed, Dec 2, 2015 at 2:37 PM, Robert <rxjwg98@gmail.com> wrote:
>> [snip]
>>>> ss0="1, 2, 4, 8, 16".split(", ")
>> [snip]
>>> Try help(str.split)
>>
>> Or if, like me, you can't remember the magic word "str", ask:
>>
>> help("".split)
>>
>> and you know you're asking about the right "split".
>>
>> --
>> To email me, substitute nowhere->runbox, invalid->com.
>
> Thanks for your smart method.
>

The even smarter method is:

help(''.split)

as this saves you reaching for the shift key :)

-- 
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.

Mark Lawrence

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#100050

On 05/12/15 20:27, Mark Lawrence wrote:
> On 05/12/2015 19:51, Robert wrote:
>> On Saturday, December 5, 2015 at 2:29:28 PM UTC-5, Peter Pearson wrote:
>>> On Wed, 2 Dec 2015 14:44:30 -0600, Ian Kelly <ian.g.kelly@gmail.com>
>>> wrote:
>>>> On Wed, Dec 2, 2015 at 2:37 PM, Robert <rxjwg98@gmail.com> wrote:
>>> [snip]
>>>>> ss0="1, 2, 4, 8, 16".split(", ")
>>> [snip]
>>>> Try help(str.split)
>>>
>>> Or if, like me, you can't remember the magic word "str", ask:
>>>
>>> help("".split)
>>>
>>> and you know you're asking about the right "split".
>>>
>>> --
>>> To email me, substitute nowhere->runbox, invalid->com.
>>
>> Thanks for your smart method.
>>
>
> The even smarter method is:
>
> help(''.split)
>
> as this saves you reaching for the shift key :)

... except you're already pressing it for the open parenthesis ... ;)

E.

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