Help Me plz

Question

What is mistake here?
text = input()

l=list(text)
a=-1
b=1
while len(l)>b:
a+=b
b+=1
k=(l[a]:l.count(l[a]))*len(l)
di={k}
print(di)

Answer 1

There are two mistake
First: You cannot use this syntax to convert a string to a list.
Second: There is a syntax error on variable k