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Python Python Collections (Retired) Dictionaries Word Count

thanh trung
thanh trung
4,246 Points

what's wrong with this?

word_count.py
# E.g. word_count("I am that I am") gets back a dictionary like:
# {'i': 2, 'am': 2, 'that': 1}
# Lowercase the string to make it easier.
# Using .split() on the sentence will give you a list of words.
# In a for loop of that list, you'll have a word that you can
# check for inclusion in the dict (with "if word in dict"-style syntax).
# Or add it to the dict with something like word_dict[word] = 1.
def word_count(string):
  string.lower()
  string.split()
  dic = {}
  for word in string:
    if word in dic:
      dic[word] +=1
    else:
      dic[word] = 1
  return string

1 Answer

Kenneth Love
STAFF
Kenneth Love
Treehouse Guest Teacher

Strings are immutable, so calling methods on them return new strings instead of changing the string in place. So start with string = string.lower() and string = string.split().

You'll also want to return dic instead of string, since your function needs to return the counts.