Create a compress function in Python?

Question

I need to create a function called compress that compresses a string by replacing any repeated letters with a letter and number. My function should return the shortened vers

Answer 1

Here is a short python implementation of a compression function:

#d=compress('xxcccdex')
#print(d)

def compress(word):
    list1=[]
    for i in range(len(word)):
        list1.append(word[i].lower())
    num=0
    dict1={}
    for i in range(len(list1)):
        if(list1[i] in list(dict1.keys())):
            dict1[list1[i]]=dict1[list1[i]]+1
        else:
            dict1[list1[i]]=1

    s=list(dict1.keys())
    v=list(dict1.values())
    word=''
    for i in range(len(s)):
        word=word+s[i]+str(v[i])
    return word