Implementation of the sequence which is the subject of the collatz conjecture

collatz.py

def collatz(n):
  c = n/2 if n % 2==0 else (3*n+1)/2
  return int(c)

def seq(n, func=collatz):
  lst = []
  while(n != 1):
    lst.append(n)
    n = func(n)
  return lst