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Groups > comp.lang.python > #45007
| Newsgroups | comp.lang.python |
|---|---|
| Date | 2013-05-08 23:36 -0700 |
| Message-ID | <71427882-d2c6-4066-b1e2-624b12a42a0d@googlegroups.com> (permalink) |
| Subject | Append to python List |
| From | RAHUL RAJ <omrahulrajcse@gmail.com> |
Checkout the following code:
sample2 = [x+y for x in range(1,10) for y in range(1,10) if x!=y]
output=[]
output=[x for x in sample2 if x not in output]
the output I get is
3 4 5 6 7 8 9 10 3 5 6 7 8 9 10 11 4 5 7 8 9 10 11 12 5 6 7 9 10 11 12 13 6 7 8 9 11 12 13 14 7 8 9 10 11 13 14 15 8 9 10 11 12 13 15 16 9 10 11 12 13 14 15 17 10 11 12 13 14 15 16 17
which contains duplicate values.
But if I do like this:
sample2 = [x+y for x in range(1,10) for y in range(1,10) if x!=y]
output=[]
for x in sample2:
if x not in output:
output.append(x)
the value of 'output' I get like this:
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
I know that both the programs have the same functionality, but why do I have different outputs?
Please help!
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Append to python List RAHUL RAJ <omrahulrajcse@gmail.com> - 2013-05-08 23:36 -0700
Re: Append to python List Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-05-09 09:55 +0300
Re: Append to python List 88888 Dihedral <dihedral88888@googlemail.com> - 2013-05-09 04:24 -0700
Re: Append to python List Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-05-09 14:30 +0300
Re: Append to python List 88888 Dihedral <dihedral88888@googlemail.com> - 2013-05-10 02:51 -0700
Re: Append to python List Chris Angelico <rosuav@gmail.com> - 2013-05-09 21:49 +1000
Re: Append to python List Anssi Saari <as@sci.fi> - 2013-05-11 18:47 +0300
Re: Append to python List Chris Angelico <rosuav@gmail.com> - 2013-05-12 02:00 +1000
Re: Append to python List 88888 Dihedral <dihedral88888@googlemail.com> - 2013-05-11 19:29 -0700
Re: Append to python List Chris Angelico <rosuav@gmail.com> - 2013-05-12 12:40 +1000
Re: Append to python List Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-05-12 09:02 +0300
Re: Append to python List Chris Angelico <rosuav@gmail.com> - 2013-05-09 16:52 +1000
Re: Append to python List Gary Herron <gary.herron@islandtraining.com> - 2013-05-08 23:54 -0700
Re: Append to python List RAHUL RAJ <omrahulrajcse@gmail.com> - 2013-05-09 01:18 -0700
Re: Append to python List RAHUL RAJ <omrahulrajcse@gmail.com> - 2013-05-09 01:19 -0700
Re: Append to python List Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-05-09 11:14 +0000
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