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Python Python Collections (2016, retired 2019) Dictionaries Word Count

orenbatsoren
orenbatsoren
2,727 Points
Posted by orenbatsoren
orenbatsoren
2,727 Points

Dictionary order

Hi,

Is there any way to contorl the order of the key & value in dictionary? i created two lists and i am mapping them to one dictionary. the problem is that i can't control the order of the insertion. this is the expected out:

{'i': 2, 'do': 1, 'it': 1, 'sam': 1, 'like': 1, 'not': 1, 'am': 1}

and this is my output:

{'do': 1, 'like': 1, 'sam': 1, 'i': 2, 'am': 1, 'it': 1, 'not': 1}

wordcount.py 
# E.g. word_count("I do not like it Sam I Am") gets back a dictionary like:
# {'i': 2, 'do': 1, 'it': 1, 'sam': 1, 'like': 1, 'not': 1, 'am': 1}
# Lowercase the string to make it easier.
def word_count(key_list):
    value_list = []
    my_dict = {}
    key_list = key_list.split()

    for lower in range(len(key_list)):
        key_list[lower] = key_list[lower].lower()

    for i in range(len(key_list)):
        value_list.append(key_list.count(key_list[i]))
    print(value_list)
    print(key_list)

    for num in range(len(key_list)):
        my_dict[key_list[num]] = value_list[num]
    print(my_dict)

word_count("I do not like it Sam I Am")

Thanks.

1 Answer

Christopher Shaw
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PLUS
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Christopher Shaw
Python Web Development Techdegree Graduate 58,248 Points
Christopher Shaw
.a{fill-rule:evenodd;}techdegree seal-36
Christopher Shaw
Python Web Development Techdegree Graduate 58,248 Points

Dictionarys are not ordered. From the docs: It is best to think of a dictionary as an unordered set of key: value pairs https://docs.python.org/3/tutorial/datastructures.html#dictionaries

If you want an order dictionary, you would need to use OrderDict. But this is not required for this challange.

from collections import OrderedDict