In message , Peter Otten wrote:
> Lawrence D'Oliveiro wrote:
>
>> In message , Gilles Ganault
>> wrote:
>>
>>> test = "t...@gmail.com"
>>> isp = ["gmail.com", "yahoo.com"]
>>> for item in isp:
>>> if test.find(item):
>>> print item
>>> === output
>>> gmail.com
>>> yahoo.com
>>> ===
>>
>
On Apr 10, 2:36 am, John Posner wrote:
> Hrvoje Niksic wrote:
>
> > if test.contains(item) # would return a Boolean value
> >
>
> >> That's a string method, not a function in the string module.
>
> Oops, of course.
>
> import operator
> operator.contains('foo', 'o')
>
> That's
> Peter Otten wrote:
>> Could you explain why you prefer 'contains(belly, beer)'
>> or 'belly.contains(beer)' over 'beer in belly'? The last form may be
a bit
>> harder to find in the documentation, but once a newbie has learned about
>> it he'll find it easy to remember.
andrew cooke wrote:
Peter Otten wrote:
> John Posner wrote:
>
>> Given how common string maniuplations are, I guess I'm surprised that
>> Python hasn't yet made "contains()" into both a "string"-module function
>> *and* a string-object method.
>
> Could you explain why you prefer 'contains(belly, beer)'
> or 'belly.co
John Posner wrote:
> Given how common string maniuplations are, I guess I'm surprised that
> Python hasn't yet made "contains()" into both a "string"-module function
> *and* a string-object method.
Could you explain why you prefer 'contains(belly, beer)'
or 'belly.contains(beer)' over 'beer in be
Hrvoje Niksic wrote:
> if test.contains(item) # would return a Boolean value
>
>> That's a string method, not a function in the string module.
Oops, of course.
import operator
operator.contains('foo', 'o')
That's pretty good, and IMHO a bit better than John Machin's suggestion
John Posner writes:
> Q: Has anyone on the python-dev list ever proposed a "string"-module
> function that does the job of the "in" operator? Maybe this:
>
> if test.contains(item) # would return a Boolean value
That's a string method, not a function in the string module. If you
want a fun
2009/4/9 Miles :
> Clearly, any comparison with a boolean literal should be illegal. ;)
Hey, we could have strict type checking at compile time of /all/
operations, couldn't we? Anybody care to join me over at the Ada list?
;-)
--
Tim Rowe
--
http://mail.python.org/mailman/listinfo/python-list
On Apr 10, 12:35 am, John Posner wrote:
> Lawrence D'Oliveiro wrote:
>
> > Fine if it only happened once. But it's a commonly-made mistake. At some
> > point you have to conclude that not all those people are stupid, there
> > really is something wrong with the design.
>
> I think "something wr
Lawrence D'Oliveiro wrote:
> Fine if it only happened once. But it's a commonly-made mistake. At some
> point you have to conclude that not all those people are stupid, there
> really is something wrong with the design.
I think "something wrong with the design" is overstating the case a bit,
an
Lawrence D'Oliveiro wrote:
In message , Gilles Ganault
wrote:
test = "t...@gmail.com"
isp = ["gmail.com", "yahoo.com"]
for item in isp:
if test.find(item):
print item
=== output
gmail.com
yahoo.com
===
This is why conditional constructs should not accept any values other than
True a
In message <7e7a386f-d336-4186-822d-
c6af0a581...@e38g2000vbe.googlegroups.com>, John Machin wrote:
> On Apr 9, 4:53 pm, Lawrence D'Oliveiro central.gen.new_zealand> wrote:
>
>> This is why conditional constructs should not accept any values other
>> than True and False.
>
> An alternative viewp
On Thu, 09 Apr 2009 18:53:13 +1200, Lawrence D'Oliveiro wrote:
> This is why conditional constructs should not accept any values other
> than True and False.
I once tried this:
for i in alist.sort():
and got an error I didn't understand because I failed to read the docs.
Clearly for loops shou
On 9 Apr, 09:49, Miles wrote:
> On Thu, Apr 9, 2009 at 2:59 AM, Peter Otten wrote:
> > Lawrence D'Oliveiro wrote:
> >> This is why conditional constructs should not accept any values other than
> >> True and False.
>
> > So you think
>
> > if test.find(item) == True: ...
>
> > would have been bett
On Apr 9, 4:53 pm, Lawrence D'Oliveiro wrote:
> In message , Gilles Ganault
> wrote:
>
> > test = "t...@gmail.com"
> > isp = ["gmail.com", "yahoo.com"]
> > for item in isp:
> > if test.find(item):
> > print item
> > === output
> > gmail.com
> > yahoo.com
> > ===
>
> This is why conditional
On Thu, Apr 9, 2009 at 2:59 AM, Peter Otten wrote:
> Lawrence D'Oliveiro wrote:
>> This is why conditional constructs should not accept any values other than
>> True and False.
>
> So you think
>
> if test.find(item) == True: ...
>
> would have been better?
Clearly, any comparison with a boolean l
Lawrence D'Oliveiro wrote:
> In message , Gilles Ganault
> wrote:
>
>> test = "t...@gmail.com"
>> isp = ["gmail.com", "yahoo.com"]
>> for item in isp:
>> if test.find(item):
>> print item
>> === output
>> gmail.com
>> yahoo.com
>> ===
>
> This is why conditional constructs should not acc
In message , Gilles Ganault
wrote:
> test = "t...@gmail.com"
> isp = ["gmail.com", "yahoo.com"]
> for item in isp:
> if test.find(item):
> print item
> === output
> gmail.com
> yahoo.com
> ===
This is why conditional constructs should not accept any values other than
True and False.
--
Gilles Ganault wrote:
> On Wed, 08 Apr 2009 12:11:55 +0200, Ulrich Eckhardt
> wrote:
>>find() returns the index where it is found or -1 if it is not found. Both
>> an
>>index>0 or a -1 evaluate to True when used as conditional expression.
>
> Thanks everyone. I shouldn't have assumed that "if test
On Wed, 08 Apr 2009 12:11:55 +0200, Ulrich Eckhardt
wrote:
>find() returns the index where it is found or -1 if it is not found. Both an
>index>0 or a -1 evaluate to True when used as conditional expression.
Thanks everyone. I shouldn't have assumed that "if test.find(item):"
was necessarily enou
Remeber the return value of find function of a string is -1 when it
fails, which is True.
Try:
for item in isp:
if item in test:
print item
From: Gilles Ganault
Date: April 8, 2009 5:56:34 PM CST
To: python-list@python.org
Subject: Why does Python show the whole array?
Gilles Ganault wrote:
Hello
I'd like to go through a list of e-mail addresses, and extract those
that belong to well-known ISP's. For some reason I can't figure out,
Python shows the whole list instead of just e-mails that match:
=== script
test = "t...@gmail.com"
isp = ["gmail.com", "yah
Gilles Ganault writes:
> I'd like to go through a list of e-mail addresses, and extract those
> that belong to well-known ISP's. For some reason I can't figure out,
> Python shows the whole list instead of just e-mails that match:
>
> === script
> test = "t...@gmail.com"
> isp = ["gmail.com"
On Wed, 2009-04-08 at 12:01 +0200, Peter Otten wrote:
> Gilles Ganault wrote:
>
> > I'd like to go through a list of e-mail addresses, and extract those
> > that belong to well-known ISP's. For some reason I can't figure out,
> > Python shows the whole list instead of just e-mails that match:
> >
Gilles Ganault wrote:
> test = "t...@gmail.com"
> isp = ["gmail.com", "yahoo.com"]
> for item in isp:
> if test.find(item):
> print item
> === output
> gmail.com
> yahoo.com
> ===
>
> Any idea why I'm also getting "yahoo.com"?
find() returns the index where it is found or -1 if it is not
Gilles Ganault wrote:
> I'd like to go through a list of e-mail addresses, and extract those
> that belong to well-known ISP's. For some reason I can't figure out,
> Python shows the whole list instead of just e-mails that match:
>
> === script
> test = "t...@gmail.com"
> isp = ["gmail.com",
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