# DOCUMENTS
doc1 = "My sister likes to have sugar, but not my father."
doc2 = "Doctors suggest that driving may cause increased stress."

documents = [doc1, doc2]

# DICTIONARY
dictionary = ["doctors", "sister", "like"]

# CHECK DOCUMENT WORDS WITHIN DICTIONARY
for word in dictionary:
    for doc in documents:
        if word in doc:
            print "nnnWord:",
            print word,
            print "in document:",
            print doc

doc1 = "My sister likes to have sugar, but not my father.".split()
doc2 = "Doctors suggest that driving may cause increased stress.".split()

import string
doc1 = "My sister likes to have sugar, but not my father.".translate(None, string.punctuation).split()
doc2 = "Doctors suggest that driving may cause increased stress.".translate(None, string.punctuation).split()

documents = map(set, [doc1, doc2])

# DICTIONARY
dictionary = ["doctors", "sister", "like"]

for word in dictionary:
    for doc in documents:
        if word in doc:
            print "nnnWord:",
            print word,
            print "in document:",
            print doc

Word: sister in document: set(['sister', 'my', 'father', 'but', 'sugar', 'to', 'likes', 'have', 'not', 'My'])

import string

def get_words(text):
    return set(text.translate(None, string.punctuation).split())

if __name__ == "__main__":
    documents = ["My sister likes to have sugar, but not my father.",
                 "Doctors suggest that driving may cause increased stress."]

    words_in_documents = map(get_words, documents)

    for word in ["doctors", "sister", "like"]:
        for doc, words in zip(documents, words_in_documents):
            if word in words:
                print "nnnWord: {} in document: {}".format(word, doc)