sort dictionary with float values in python

Question

I'm sorting dictionary with float values to ascending order. Here's my code

dicdata = {'mike': 15.12, 'jenny': 2.53, 'glenn' : 5.16, 'Meo': 1.01}

sorted_dicdata = sorted(dicdata.items(), key=operator.itemgetter(1), reverse=True)

The output is not accurate. it gives me glenn:5.16 mike:15.12 jenny:2.53 meo:1.01 How can i fix this?

Just to note: they're float values - not to be confused with decimal.Decimal values — Jon Clements
– Jon Clements, Commented Oct 21, 2015 at 15:33
Also - from your stated output glenn:5.16 mike:15.12 jenny:2.53 meo:1.01 - that looks very much like you've copy and pasted an attempt at converting it back to a dict - rather than a list of 2-tuples which sorted which return in this case. Can't help but feel you haven't posted your full code here... — Jon Clements
– Jon Clements, Commented Oct 21, 2015 at 15:35
@Newboy11 dictionaries, by default, are unsorted. It has nothing to do with the float values — Wondercricket
– Wondercricket, Commented Oct 21, 2015 at 15:39

Suyog Rajbhandari · Accepted Answer · 2015-10-21 15:41:23Z

3

The following code works if you want from decimal to the ascending order

    >>> import operator
    >>> print sorted(dicdata.items(), key=operator.itemgetter(1))
    [('Meo', 1.01), ('jenny', 2.53), ('glenn', 5.16), ('mike', 15.12)]

answered Oct 21, 2015 at 15:41

Suyog Rajbhandari

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gies0r Over a year ago

Works pretty well and fast in python3 - Thanks!

jfowkes · Accepted Answer · 2015-10-21 15:32:53Z

0

The following correctly sorts the dictionary (Python 2.7.9 and Python 3.4.2)

>>> import operator
>>> dicdata={'mike':15.12, 'jenny':2.53, 'glenn': 5.16, 'Meo': 1.01}
>>> sorted_dicdata = sorted(dicdata.items(), key=operator.itemgetter(1),        reverse=True)
>>> sorted_dicdata
[('mike', 15.12), ('glenn', 5.16), ('jenny', 2.53), ('Meo', 1.01)]

I put quotes around the dictionary keys since I assume they are meant to be strings.

answered Oct 21, 2015 at 15:32

jfowkes

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Artem Yanovskiy · Accepted Answer · 2021-11-12 09:18:55Z

0

Way I found - convert dict to pandas series, sort, and convert back.

import pandas as pd

series = pd.Series(dictionary)
series.sort_values(axis=0, ascending=False, inplace=True, kind='quicksort', na_position='last', ignore_index=False, key=None)
series.to_dict()

answered Nov 12, 2021 at 9:18

Artem Yanovskiy

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