CODEWITHSUNDEEP
pythondictionary
Gilbert V
Gilbert V

Reputation: 1040

Python,Sorting a dictionary

I am working on a dict in python. I am trying to sort it out alphabetically and split it to look slightly better. Here is the code I have so far in the dictonatary.

authorentry = {'author':  name, 'date': datef , 'path': path_change , 'msg' : xmlMsgf }           
if not name in author:
    author[ name ] = []

author[ name ].append( authorentry )       

if not authorentry in author.items():
    author['author'] = [authorentry]

print sorted (author.keys()), sorted (author.values())

Now what i want it to do is print out the dict in a sorted order based on the author and the date. and also to split it and modified it so it doesn't have all those commas and 'u's if that is possible. Any ideas on how to accomplish it?

this is what it looks like when i print it it as it is.

how i want is author shows up first in the list not date. And I would like it alphabetical if possible and to remove the commas in the entrys to print it out cleaner. is it possible? 

[[{'date': ['06-08-2012 09:01:52 PM'], 'path': [u'/branches/Patch_4_2_0_Branch'], 'msg': ['none', u'PATCH_BRANCH:N/A\nBUG_NUMBER:N/A\nFEATURE_AFFECTED:N/A\nOVERVIEW:N/A\nAdding the SVN log size requirement to the branch \n'], 'author': u'glv'}], [{'date': ['06-08-2012 09:01:52 PM'], 'path': [u'/branches/Patch_4_2_0_Branch'], 'msg': ['none', u'PATCH_BRANCH:N/A\nBUG_NUMBER:N/A\nFEATURE_AFFECTED:N/A\nOVERVIEW:N/A\nAdding the SVN log size requirement to the branch \n'], 'author': u'glv'}]]

Update: as of right now I can group the authors together but for some reason not only can't i get it alphebetized I cannot even get the author to be the first person on the list what shows up is something similar to this:

 Date: 06-08-2012 08:56:09 PM

  Changes by : glv

  Comments: PATCH_BRANCH:N/A BUG_NUMBER:N/A FEATURE_AFFECTED:N/A OVERVIEW:N/A Adding the svn commit line requrement  

            Directory Location: /trunk

The way i wanted it ordered is more like this. 

  Changes by : glv
  Date: 06-08-2012 08:56:09 PM
  Directory Location: /trunk
  Comments: PATCH_BRANCH:N/A BUG_NUMBER:N/A FEATURE_AFFECTED:N/A OVERVIEW:N/A Adding the svn commit line requrement

I tried the OrderedList to see if I can get it to work that way but so far no luck or success. Is there something I am missing?

Upvotes: 3

Views: 313

Answers (2)

Preet Kukreti
Preet Kukreti

Reputation: 8607

If you just care about presenting this information for user readability, use pprint module.

import pprint
pprint.pprint(author)

assuming author is a dict. Alternatively use pprint.pformat to get a string which you can further manipulate/clean up e.g. print pprint.pformat(author).replace(',','') to remove commas.

You should also know that dicts can not be reordered since they are essentially a hashtable whos keys are hashes (like a set).

You can also try using collections.OrdererdDict:

from collections import OrdererdDict
sorted_author = OrderedDict(sorted(author.iteritems()))

Update: its strange you are still having problems with this. Ill just give you some code that will definitely work and you can adapt it from there:

def format_author(author):
    tups = sorted(author.iteritems())           # alphabetical sorting
    kmaxlen = max([len(k) for k, v in tups])    # for output alignment

    # some custom rearrangement. if there is a 'msg' key, we want it last
    tupkeys = [k for k, v in tups]
    if 'msg' in tupkeys:
        msg_tup = tups.pop(tupkeys.index('msg'))
        tups.append(msg_tup)    # append to the end
        # alternatively tups.insert(0, msg_tup) would insert at front

    output = []

    for k, v in tups:
        # dress our values
        if not v:
            v = ''
        elif isinstance(v, list):
            if len(v) == 1:
                v = v[0]
            if len(v) == 2 and v[0] in [None, 'none', 'None']:
                v = v[1]
         v = v.strip()
        output.append("%s: %s" % (k.rjust(kmaxlen), v))
    return "\n".join(output)

Then you can do something like:

author = {'date': ['06-08-2012 09:01:52 PM'], 'path': [u'/branches/Patch_4_2_0_Branch'], 'author': u'glv', 'msg': ['none', u'blah blah blah \n']}
s = format_author(author)
print s

and get output like this:

author: glv
  date: 06-08-2012 09:01:52 PM
  path: /branches/Patch_4_2_0_Branch
   msg: blah blah blah

Upvotes: 2

tobias_k
tobias_k

Reputation: 82889

You might consider creating a class for authorentry instead of using a dict and implementing the __str__ method.

class authorentry:
    # create authorentry; usage: x = authorentry(author, date, path, msg)
    def __init__(self, author, date, path, msg):
        self.author = author
        self.date = date
        self.path = path
        self.msg = msg
    # return string representation for authorentry
    def __str__(self):
        return "Authorentry(name: %s, date: %r, path: ...)" % (self.author, self.date, ...)

Now you can create and print an authorentry like this:

ae = authorentry("some name", "some date", "some path", "some message")
print ae

Upvotes: 1

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