# Explicit is better than implicit.
# Simple is better than complex.
# Complex is better than complicated.

# Above is my textfile which I've opened and added to a list, from the list I add each word into a dictionary. I'm trying to count  the amount of words which have a length of 1, 2, 3, 4. In this case: there are 0 char with a length of 1, 3 char with length of  2, 0 char with a length of 3 and 3 char with a length of 4. I'm trying to add this into a dictionary and so the below is the code:

def words_frequency(filename):
    open_file = open(filename,"r")
    file_text = open_file.read()
    word_list = file_text.split()
    open_file.close()

    word_dict = {}

    for word in word_list:
        if word.isalpha():
            if not word in word_dict:
                if len(word) == 1:
                    word_dict[word] = 1
                elif not len(word) == 1:
                    word_dict[word] = 0

                if len(word) == 2:
                    word_dict[word] = 1
                elif not len(word) == 2:
                    word_dict[word] = 0

                if len(word) == 3:
                    word_dict[word] = 1
                elif not len(word) == 3:
                    word_dict[word] = 0

                if len(word) == 4:
                    word_dict[word] = 1
                elif not len(word) == 4:
                    word_dict[word] = 0
            else:
                if len(word) == 1:
                    word_dict[word] += 1

                if len(word) == 2:
                    word_dict[word] += 1

                if len(word) == 3:
                    word_dict[word] += 1

                if len(word) == 4:
                    word_dict[word] += 1

#for some reason the output is:
    #{'than': 3, 'Simple': 0, 'is': 2, 'Explicit': 0, 'Complex': 0, 'better': 0}
#but should be:
    #{'than': 3, 'Simple': 0, 'is': 3, 'Explicit': 0, 'Complex': 0, 'better': 0}

#what am I doing wrong?