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Groups > comp.lang.python > #77341
| Date | 2014-08-31 15:30 +1000 |
|---|---|
| From | Cameron Simpson <cs@zip.com.au> |
| Subject | Re: I have tried and errored a reasonable amount of times |
| References | <pgh40alno9vl8n8bpk5ogbnc1uhql76n2n@4ax.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.13658.1409464347.18130.python-list@python.org> (permalink) |
On 30Aug2014 17:48, Seymore4Head <Seymore4Head@Hotmail.invalid> wrote:
>I have been told that one is a method and the other calls a method. I
>still have to learn exactly what that means. I'm getting there.
A method is, essentially, a function. Observe:
def my_func(x):
print(9)
my_func is just the name of the function, and .isupper is likewise just the
name of the function that tests a string for uppercaseness.
Conversely, my_func() actually calls the function, and likewise .isupper()
calls the test function, returning True or False depending on whether the
string was uppercase or not.
A method versus a function? A method is a particular type of function. It is
normally defined in a class, eg:
class MyClass:
def method_name_here(self, arg1, arg2):
... do something with self and arg1 and arg2 ...
When you have an object which is an instance of the class (let us call it "o"),
when you call:
o.method_name_here(1,2)
it invokes the function MyClass.method_name_here(o,1,2). So because the string
"no" is an instance of str, the code:
"no".isupper()
runs the function str.isupper("no"), which examines its argument for
uppercaseness.
Cheers,
Cameron Simpson <cs@zip.com.au>
Why is it so hard for people to simply leave people alone? But, the answer
comes to me: they are idiots and in a perfect world, I would be permitted to
kill them all. - Julie Rhodes <jk.rhodes@asacomp.com>
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I have tried and errored a reasonable amount of times Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-08-30 14:27 -0400
Re: I have tried and errored a reasonable amount of times Tim Chase <python.list@tim.thechases.com> - 2014-08-30 13:48 -0500
Re: I have tried and errored a reasonable amount of times Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-08-30 14:50 -0400
Re: I have tried and errored a reasonable amount of times Ned Batchelder <ned@nedbatchelder.com> - 2014-08-30 16:20 -0400
Re: I have tried and errored a reasonable amount of times Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-08-30 16:32 -0400
Re: I have tried and errored a reasonable amount of times Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-08-31 18:37 +1000
Re: I have tried and errored a reasonable amount of times Chris Angelico <rosuav@gmail.com> - 2014-08-31 19:16 +1000
Re: I have tried and errored a reasonable amount of times Grant Edwards <invalid@invalid.invalid> - 2014-09-02 16:43 +0000
Re: I have tried and errored a reasonable amount of times Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-09-02 12:59 -0400
Re: I have tried and errored a reasonable amount of times Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-03 11:44 +1000
Re: I have tried and errored a reasonable amount of times Rustom Mody <rustompmody@gmail.com> - 2014-09-02 20:14 -0700
Re: I have tried and errored a reasonable amount of times Steven D'Aprano <steve@pearwood.info> - 2014-09-03 07:16 +0000
Re: I have tried and errored a reasonable amount of times Marko Rauhamaa <marko@pacujo.net> - 2014-09-03 10:44 +0300
Re: I have tried and errored a reasonable amount of times Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-04 11:54 +1000
Re: I have tried and errored a reasonable amount of times Chris Angelico <rosuav@gmail.com> - 2014-09-04 12:03 +1000
Re: I have tried and errored a reasonable amount of times Rustom Mody <rustompmody@gmail.com> - 2014-09-03 19:23 -0700
Re: I have tried and errored a reasonable amount of times Marko Rauhamaa <marko@pacujo.net> - 2014-09-04 08:36 +0300
Re: I have tried and errored a reasonable amount of times Denis McMahon <denismfmcmahon@gmail.com> - 2014-09-04 11:17 +0000
Re: I have tried and errored a reasonable amount of times Chris Angelico <rosuav@gmail.com> - 2014-09-04 21:42 +1000
Re: I have tried and errored a reasonable amount of times Denis McMahon <denismfmcmahon@gmail.com> - 2014-09-05 02:53 +0000
Re: I have tried and errored a reasonable amount of times Chris Angelico <rosuav@gmail.com> - 2014-09-05 13:02 +1000
Re: I have tried and errored a reasonable amount of times Grant Edwards <invalid@invalid.invalid> - 2014-09-05 14:54 +0000
Re: I have tried and errored a reasonable amount of times Marko Rauhamaa <marko@pacujo.net> - 2014-09-05 19:45 +0300
Re: I have tried and errored a reasonable amount of times Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-08-30 22:21 +0100
Re: I have tried and errored a reasonable amount of times Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-08-30 17:48 -0400
Re: I have tried and errored a reasonable amount of times Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-08-30 23:32 +0100
Re: I have tried and errored a reasonable amount of times Cameron Simpson <cs@zip.com.au> - 2014-08-31 15:30 +1000
Re: I have tried and errored a reasonable amount of times Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-08-31 19:05 +1000
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