Primzahlen Sieb des Eratosthenes

#!/usr/bin/python
def PrimesLE(limit):
Primes = [2]
counter = 3
     while counter <= limit :
            for KnownPrime in Primes:
                if counter % KnownPrime == 0:
                   break 
            else:
                Primes.append(counter)
            counter = counter + 2
return Primes
PrimesLE(100)