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

Abdulkadir Kollere
Abdulkadir Kollere
1,723 Points
Posted by Abdulkadir Kollere
Abdulkadir Kollere
1,723 Points

Try again

I came up with the attached code. I am stuck and I dont know how to go about this challenge. Please help

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(word):
    splitted_word = word.split( )
    for word in splitted_word:
        dic = dic.update({word : splitted_word.count(word)})
    return dic

1 Answer

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

It looks like you're close, but two things stand out for me:

  • you should initialize dic as an empty dictionary before you reference it
  • .update modifies the dictionary directly, it does not return anything (don't assign it to dic)
Abdulkadir Kollere
Abdulkadir Kollere
1,723 Points
Abdulkadir Kollere
Abdulkadir Kollere
1,723 Points

I tried initialising with dic = {:} and it returned an error also. will the kenneth[key] = "value" format work for the update?

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

Another approach might be directly assigning the dictionary using the key as an index. But remember that you want to accumulate a count, so you'd want to assign it to 1 only if it had not been added yet, and otherwise increase the value already stored.

Abdulkadir Kollere
Abdulkadir Kollere
1,723 Points
Abdulkadir Kollere
Abdulkadir Kollere
1,723 Points

Steven can you please advise on how to initialize empty dictionaries?

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

You had it, but leave out the colon:

    dic = {}
Abdulkadir Kollere
Abdulkadir Kollere
1,723 Points
Abdulkadir Kollere
Abdulkadir Kollere
1,723 Points

Hi Steven. I am . struggling with this part of the challenges. I initialised the dic variable to be an empty dictionary. Now when I try the code in workspaces, it does not return anything and there is no error. Please look at the code below.

def word_count(word):

    splitted_word = word.split( )

    splitted_word = splitted_word.lower()

    dic = {}
    for word in splitted_word:
        dic.update({word : splitted_word.count(word)})
    return dic
Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

You nearly had it.

But you can't apply lower() to a list. You can, however, apply it to the string right before you split it:

    splitted_word = word.lower().split()