markov chain in python (beginner)

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I am new to python and attempting to make a markov chain. Other examples show object instance usage and I haven't gone quite that far. I havent done the random selection of the values part yet but basically I am at a loss for my output of this code so far.

filename = open("dr-suess.txt")



def make_list(filename):

    """make file a list and a list of tuple tup_pairs"""

    file_string = filename.read()  #read whole file
    file_list = file_string.split()   #split on whitespace (not worrying about 
                                  # puncuation right now)

    tup_pairs = []
    for i in range(len(file_list)-1):  
        tup_pairs.append((file_list[i], file_list[i+1]))  #making my tuple pair list


return tup_pairs, file_list  



def mapping(filename):

    tup_pairs, file_list = make_list(filename)  


    dictionary = {} 
    for pair in tup_pairs:
        dictionary[pair] = []  #setting the value of dict to empty list

    tup_pairs = set(tup_pairs)   #throwing out repeated tuples 
    for word in file_list:
        word_number = file_list.index(word)  #index number of iter word
        if word_number > 1:   #because there is no -2/-1 index 
            compared_tuple = (file_list[word_number-2], file_list[word_number-1]) #to find
                                                            #preceeding pair to compare
        for pair in tup_pairs:
            if compared_tuple == pair: 
                dictionary[pair].append(word)  #should append the word to my dict value (list)


    print dictionary  #getting weird results (some words should appear that dont, some
                   # don't appear that should)

mapping(filename)

output: Bolded one example of weird output (there should only be 4 'you' values and there are six.

Lindsays-MBP:markov lindsayg$ python markov.py {('a', 'fox?'): [], ('Sam', 'I'): ['am?'], ('you,', 'could'): ['you', 'you', 'you', 'you', 'you', 'you']**, ('could', 'you'): ['in', 'with', 'in', 'with'], ('you', 'with'): [], ('box?', 'Would'): [], ('ham?', 'Would'): [], ('I', 'am?'): [], ('you', 'in'): ['a', 'a', 'a', 'a'], ('a', 'house?'): [], ('like', 'green'): ['eggs'], ('like', 'them,'): ['Sam'], ('and', 'ham?'): [], ('Would', 'you'): ['like', 'like'], ('a', 'mouse?'): [], ('them,', 'Sam'): ['I'], ('in', 'a'): ['house?', 'box?'], ('with', 'a'): ['mouse?', 'fox?'], ('house?', 'Would'): [], ('a', 'box?'): [], ('Would', 'you,'): ['could', 'could', 'could', 'could'], ('green', 'eggs'): ['and'], ('you', 'like'): ['green', 'them,'], ('mouse?', 'Would'): [], ('fox?', 'Would'): [], ('eggs', 'and'): ['ham?']}

fyi file text being used:

Would you, could you in a house?

Would you, could you with a mouse?

Would you, could you in a box?

Would you, could you with a fox?

Would you like green eggs and ham?

Would you like them, Sam I am?

asked 1 min ago

Lindsay Rae

1

markov chain in python (beginner)