import re

text = "Today, I _ have watched series:thebigbangtheory.hbo. Yesterday, I looked up series:houseofcards.netflix and series:twoandahalf1.comedy. Tomorrow I will .hbo enter on _. and on series:alt-serial.netflix and series:dynasty.netflix"


def extract_series(text):
    rez=[]
    # YOUR CODE HERE
    pattern=re.compile("[a-z]+:[a-z1-9]+\\.[a-z]+")
    rez=pattern.findall(text)
    return rez

def classify(text):
    d={}

# YOUR CODE HERE
    l_netflix=[]
    l_hbo=[]
    l_comedy=[]
    r=extract_series(text)
    for i in range(0,len(r)):
        if r[i].find("netflix")!=-1:
            l_netflix.append(r[i])
        if r[i].find("hbo")!=-1:
            l_hbo.append(r[i])
        if r[i].find("comedy")!=-1:
            l_comedy.append(r[i])
    d["netflix"]=l_netflix
    d["hbo"]=l_hbo
    d["comedy"]=l_comedy

    return d


print(classify(text))