Re: [Tutor] how to remove the coming duplication

2011-11-10 Thread lina
On Thu, Nov 10, 2011 at 8:48 PM, Steven D'Aprano wrote: > lina wrote: >> >> Hi, >> >> How to remove the coming duplication, >> >> Here I wrote one (not working): >> >> > a=['2', '5', '7', '5', '5'] > > [...] >> >> I wish to get a is [2,5,7,5] >> >> just remove the coming duplication, not uniqu

Re: [Tutor] how to remove the coming duplication

2011-11-10 Thread Steven D'Aprano
lina wrote: Hi, How to remove the coming duplication, Here I wrote one (not working): a=['2', '5', '7', '5', '5'] [...] I wish to get a is [2,5,7,5] just remove the coming duplication, not unique the list. a = [2, 5, 7, 5, 5] b = a[0:1] # slice of the first item only for x in a[1:]: #

Re: [Tutor] how to remove the coming duplication

2011-11-10 Thread Andreas Perstinger
On 2011-11-10 09:26, lina wrote: atoms=[] def fetchonefiledata(infilename): for line in open(infilename,"r"): parts=line.strip().split() atoms=parts[2] print(atoms[0]) First you define "atoms" as an empty list, but in the line atoms

Re: [Tutor] how to remove the coming duplication

2011-11-10 Thread Peter Otten
Asokan Pichai wrote: > On Thu, Nov 10, 2011 at 2:07 PM, Peter Otten <__pete...@web.de> wrote: > >> Christian Witts wrote: >> >> > def remove_coming_duplication(a_list): >> > return [element for idx, element in enumerate(a_list) if element >> > != >> > a_list[idx-1]] >> >> Beware of nega

Re: [Tutor] how to remove the coming duplication

2011-11-10 Thread Asokan Pichai
On Thu, Nov 10, 2011 at 2:07 PM, Peter Otten <__pete...@web.de> wrote: > Christian Witts wrote: > > > def remove_coming_duplication(a_list): > > return [element for idx, element in enumerate(a_list) if element != > > a_list[idx-1]] > > Beware of negative indices: > > >>> remove_coming_duplica

Re: [Tutor] how to remove the coming duplication

2011-11-10 Thread Peter Otten
Christian Witts wrote: > def remove_coming_duplication(a_list): > return [element for idx, element in enumerate(a_list) if element != > a_list[idx-1]] Beware of negative indices: >>> remove_coming_duplication([1, 2, 1]) [2, 1] # should be [1, 2, 1]

Re: [Tutor] how to remove the coming duplication

2011-11-10 Thread lina
Thanks for all, I found the problems I faced is more tricky than the simple list I gave. Here the list is: a row of numbers, not one number, such as print a_list[1] is: 1 1 9 7 7 9 9 9 print(a_list) is: 617 617 790 571 571 790 790 790 I attached the codes written based on the suggestions al

Re: [Tutor] how to remove the coming duplication

2011-11-10 Thread Asokan Pichai
I was so miffed at not reading the OP's mail carefully that I wrote a one liner. Ok. Here it goes: def no_adjacent_dup(lst): return [ x for x, y in zip(lst, lst[1:]) if x != y] + [lst[-1]] :-) Enjoyed working that one out; but whether it is a good solution Asokan Pichai

Re: [Tutor] how to remove the coming duplication

2011-11-09 Thread Christian Witts
On 2011/11/10 09:10 AM, lina wrote: Hi, How to remove the coming duplication, Here I wrote one (not working): a=['2', '5', '7', '5', '5'] for i in range(len(a)-1): if a[i+1]==a[i]: a.remove(a[i+1]) if i not in range(len(a)): break a

Re: [Tutor] how to remove the coming duplication

2011-11-09 Thread delegbede
BlackBerry wireless device from MTN -Original Message- From: lina Sender: tutor-bounces+delegbede=dudupay@python.org Date: Thu, 10 Nov 2011 15:20:49 To: tutor Subject: Re: [Tutor] how to remove the coming duplication b = [] b=b.append(a[i]) for i in range(len(a)) if a[i] != b[-1

Re: [Tutor] how to remove the coming duplication

2011-11-09 Thread spawgi
Hello, list.remove will remove the first occurrence of the value from the list. So the output is expected as far as Python is concerned. May be you should think about using pop function. Please take a look at the code below >>> def RemoveComingDuplicates(a): for i in range(len(a)-1): print i,i+

Re: [Tutor] how to remove the coming duplication

2011-11-09 Thread delegbede
ry wireless device from MTN -Original Message- From: lina Sender: tutor-bounces+delegbede=dudupay@python.org Date: Thu, 10 Nov 2011 15:10:57 To: tutor Subject: [Tutor] how to remove the coming duplication Hi, How to remove the coming duplication, Here I wrote one (not working): >>&g

Re: [Tutor] how to remove the coming duplication

2011-11-09 Thread Asokan Pichai
Bad to reply to my own post. Failed to understand the >> just remove the coming duplication, not unique the list. Sorry; ignore my ideas Asokan Pichai ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.p

Re: [Tutor] how to remove the coming duplication

2011-11-09 Thread lina
>>> for i in range(len(a)): if i == 0: b.append(a[i]) if a[i]!=b[-1]: b.append(a[i]) This one seems work, but looks clumsy, Thanks for any suggestions that helps to improve. Best regards, ___ Tutor mailli

Re: [Tutor] how to remove the coming duplication

2011-11-09 Thread Asokan Pichai
On Thu, Nov 10, 2011 at 12:40 PM, lina wrote: > Hi, > > How to remove the coming duplication, > > Here I wrote one (not working): > > > >>> a=['2', '5', '7', '5', '5'] > >>> for i in range(len(a)-1): >if a[i+1]==a[i]: >a.remove(a[i+1]) >if i not in range(len(a)): >

Re: [Tutor] how to remove the coming duplication

2011-11-09 Thread lina
b = [] b=b.append(a[i]) for i in range(len(a)) if a[i] != b[-1] showed me: SyntaxError: invalid syntax ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor

[Tutor] how to remove the coming duplication

2011-11-09 Thread lina
Hi, How to remove the coming duplication, Here I wrote one (not working): >>> a=['2', '5', '7', '5', '5'] >>> for i in range(len(a)-1): if a[i+1]==a[i]: a.remove(a[i+1]) if i not in range(len(a)): break >>> a ['2', '7', '5', '5'] I wish