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bacon-number/file_parser.py
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import marshal | |
from collections import deque | |
# Generating the graph | |
def name_cleaner(string): | |
try: | |
return string[:string.index('[')] | |
except: | |
return string | |
def get_id(dictionary, string): | |
if string in dictionary: | |
return dictionary[string] | |
n = len(dictionary) | |
dictionary[string] = n | |
return n | |
def get_dict(text_file): | |
dictionary = {} | |
name_to_id = {} | |
with open(text_file, 'r') as f: | |
actor = 'a' | |
movie = 'b' | |
dictionary['a'] = set() | |
for line in f: | |
array = line.split('\t') | |
if line[0] in 'QWERTYUIOPASDFGHJKLZXCVBNM.&"': | |
actor = get_id(name_to_id, array[0]) | |
movie = get_id(name_to_id, name_cleaner(array[1])) | |
dictionary[actor] = set() | |
if "(TV)" in array[1]: | |
continue | |
if len(array) == 4: | |
movie = get_id(name_to_id, name_cleaner(array[3])) | |
if "(TV)" in array[3]: | |
continue | |
dictionary[actor].add(movie) | |
if movie not in dictionary: | |
dictionary[movie] = set() | |
dictionary[movie].add(actor) | |
return dictionary, name_to_id | |
print "Loading..." | |
# Creating dictionaries | |
graph, names = get_dict('merged_list') | |
id_to_names = {} | |
for key in names: | |
id_to_names[names[key]] = key | |
# Finding shortest path | |
def BFS(graph, source): | |
line = deque() | |
distance = {source : 0} | |
line.append(source) | |
while line: | |
t = line.popleft() | |
for e in graph[t]: | |
if e not in distance: | |
distance[e] = distance[t] + 1 | |
line.append(e) | |
return distance | |
Bacon = names['Bacon, Kevin (I)'] | |
bacon_numbers = BFS(graph, Bacon) | |
marshal.dump(graph, open("graph.p", "wb")) | |
marshal.dump(names, open("names.p", "wb")) | |
marshal.dump(id_to_names, open("id_to_names.p", "wb")) | |
marshal.dump(bacon_numbers, open("bacon_numbers.p", "wb")) | |
def path_finder(graph, dictionary, origin, objective): | |
assert dictionary[objective] == 0 | |
output = [origin] | |
while output[-1] != objective: | |
for z in graph[output[-1]]: | |
if dictionary[z] + 1 == dictionary[output[-1]]: | |
output.append(z) | |
return output | |
# Command Line Interface | |
print "Welcome to the Bacon-Number Finder!" | |
print "Insert names in the format Lastname, First Name or q to quit" | |
while True: | |
actor = raw_input("Please insert a name: ") | |
if actor == "q": | |
break | |
try: | |
print bacon_numbers[names[actor]]/2 | |
for x in path_finder(graph, bacon_numbers, names[actor], Bacon): | |
print id_to_names[x] | |
except: | |
try: | |
actor += " (I)" | |
print bacon_numbers[names[actor]]/2 | |
for x in path_finder(graph, bacon_numbers, names[actor], Bacon): | |
print id_to_names[x] | |
except: | |
print "This person is not in our database." |