Remove duplicates from list

Derek Perriero derek.perriero at gmail.com
Thu Jun 9 21:53:24 CEST 2005


Sorry for not being more clear. I'm using Zope to store the hours of each 
library on the campus. The hours of each library will be set on a basis of 
Monday - Friday. i.e. Monday for a specific library, let's say Downtown 
Campus Library will stored as an attribute of 8am - 9pm, in Zope, and each 
day till Friday will be stored as the hours dictate. I'm generating a 
print-out based on these hours and info for the general public. The goal of 
mine is to group all the libraries under one heading if they have the exact 
same hours, to cut back on redundancy when a user looks at it. 
So when I say: collect = item.Monday + item.Tuesday + item.Wednesday + 
item.Thursday + item.Friday + item.Saturday + item.Sunday, the order is 
already this preset configuration. I want 'collect' to be static so it can 
compare it against another libraries hours and group it if necessary. The 
libraries that fail to be duplicates of other libraries will be generated as 
usual under the grouped libraries. They will have a single heading.

An example can be seen here of what I am trying to achieve: 
http://www.libraries.wvu.edu/hours/summer.pdf
These are the outputs I failed to mention last time.
What I want:
['8am - 9pm8am - 9pm8am - 9pm8am - 9pm8am - 5pm9am - 5pm6pm - 10pm', '8am - 
9pm8am - 9pm8am - 9pm8am - 9pm8am - 5pm9am - 5pmClosed', '9am - 8pm9am - 
8pm9am - 8pm9am - 8pm9am - 8pm9am - 6pm12pm - 6pm', '9am - 5pm9am - 5pm9am - 
5pm9am - 5pm9am - 5pmClosedClosed', '10am - 5pm10am - 5pm10am - 5pm10am - 
5pm10am - 5pm10am - 5pmClosed']

What I am getting now:

['8am - 9pm8am - 9pm8am - 9pm8am - 9pm8am - 5pm9am - 5pm6pm - 10pm', '8am - 
9pm8am - 9pm8am - 9pmClosed8am - 5pm9am - 5pm6pm - 10pm', '8am - 9pm8am - 
9pm8am - 9pm8am - 9pm8am - 5pm9am - 5pmClosed', '9am - 8pm9am - 8pm9am - 
8pm9am - 8pm9am - 8pm9am - 6pm12pm - 6pm', '9am - 5pm9am - 5pm9am - 5pm9am - 
5pm9am - 5pmClosedClosed', '10am - 5pm10am - 5pm10am - 5pm10am - 5pm10am - 
5pm10am - 5pmClosed']

Thanks,
-Derek

On 6/9/05, Chris Lambacher <lambacck at gmail.com> wrote:
> 
> It is very unclear what you are trying to do. Why not explain what
> you want the output to be. You will get better answers.
> 
> As a first stab at what you are doing wrong:
> collect = item.Monday + item.Tuesday + item.Wednesday + item.Thursday
> + item.Friday + item.Saturday + item.Sunday
> 
> The above is string addition and the result is a string. The ouput
> you provide is in fact a list with no duplicates, i.e. there are no
> two strings the same.
> 
> If order is not important to you a structure that will give you an
> 'unordered list with no duplicates' is a set (available in the std
> library in Python 2.3 and 2.4, see the cookbook for recipies for
> earlier versions of Python). Note that sets are unordered, i.e. no
> guarentee is made about what order the elements are accessed in when
> you iterate over them.
> 
> -Chris
> 
> On 6/9/05, Derek Perriero <derek.perriero at gmail.com> wrote:
> > I've been un-triumphantly trying to get a list of mine to have no 
> repeats in
> > it. First, I'm pulling attributes from Zope and forming a list. Next, 
> I'm
> > pulling those same values and comparing them against the same list and 
> if
> > the values equal each other and are not already in the list, they append 
> to
> > my 'nodupes' list. My current result is showing what I put in I am 
> getting
> > out. Below the code is my output of 'nodupes' list. Here's the snippet.
> >
> > regHours = context.getMainPrint(); <---attributes from Zope
> >
> > libslist = []
> > nodupes = []
> >
> > #collect libraries
> > for libs in regHours:
> > cache = libs.Monday + libs.Tuesday + libs.Wednesday + libs.Thursday +
> > libs.Friday + libs.Saturday + libs.Sunday
> > libslist.append(cache)
> >
> > #pull repeated values
> > for item in regHours:
> > collect = item.Monday + item.Tuesday + item.Wednesday + item.Thursday +
> > item.Friday + item.Saturday + item.Sunday
> > libName = item.libraryName
> >
> > for libs in libslist:
> > if collect == libs and libs not in nodupes:
> > nodupes.append(libs)
> >
> > My Current Output:
> > ['8am - 9pm8am - 9pm8am - 9pm8am - 9pm8am - 5pm9am - 5pm6pm - 10pm', 
> '8am -
> > 9pm8am - 9pm8am - 9pmClosed8am - 5pm9am - 5pm6pm - 10pm', '8am - 9pm8am 
> -
> > 9pm8am - 9pm8am - 9pm8am - 5pm9am - 5pmClosed', '9am - 8pm9am - 8pm9am -
> > 8pm9am - 8pm9am - 8pm9am - 6pm12pm - 6pm', '9am - 5pm9am - 5pm9am - 
> 5pm9am -
> > 5pm9am - 5pmClosedClosed', '10am - 5pm10am - 5pm10am - 5pm10am - 5pm10am 
> -
> > 5pm10am - 5pmClosed']
> >
> > Thanks
> >
> >
> >
> >
> >
> > --
> > Perriero, Derek
> > derek.perriero at gmail.com
> >
> > --
> > http://mail.python.org/mailman/listinfo/python-list
> >
> >
> 
> 
> --
> Christopher Lambacher
> lambacck at computer.org
> 



-- 
Perriero, Derek
derek.perriero at gmail.com
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