def delete_repeated_cons(s):
    no_reps = ''
    for i in range(len(s)-1):
        if s[i]!=s[i+1]:
            no_reps = no_reps + s[i]
    no_reps = no_reps + s[-1]
    return no_reps


#using a list
def delete_repeated_cons_2(s):
    no_reps = []
    for i in range(len(s)-1):
        if s[i]!=s[i+1]:
            no_reps.append(s[i])
    no_reps.append(s[-1])
    return ''.join(no_reps)