Create a loop for a word counter on a list

The idea is that I have a list that takes out tweets in each refresh, so it is creating a list of new data with their dates, I have a word counter and in sum the expected result is to count the words and assign them to a list of dates that are being updated, this is my list of dates ...

    FechasListC = []
    for i in FechasList:
         if i not in FechasListC:
                FechasListC.append(i)
    print FechasListC
    [u'Jul07', u'Jul08', u'Jul10', u'Jul11', u'Jul12', u'Jul13', u'Jul14', 
    u'Jul19', u'Jul23', u'Jul25']

and my counter is this ...

    cv = CountVectorizer()
    count_matrix = cv.fit_transform(Jul07.text)

    jul07count = pd.DataFrame(cv.get_feature_names(), columns=["word"])
    jul07count["count"] = count_matrix.sum(axis=0).tolist()[0]
    jul07count = jul07count.sort_values("count", 
    ascending=False).reset_index(drop=True)
    jul07count.set_index("word", inplace=True)

    cv = CountVectorizer()
    count_matrix = cv.fit_transform(Jul08.text)

    jul08count = pd.DataFrame(cv.get_feature_names(), columns=["word"])
    jul08count["count"] = count_matrix.sum(axis=0).tolist()[0]
    jul08count = jul08count.sort_values("count", 
    ascending=False).reset_index(drop=True)
    jul08count.set_index("word", inplace=True)

The idea is to go creating those "jul08count" on the counters ...

A thousand thanks!