Python begineer confused by a piece of code
- by Protean
I understand the gist of the code, that it forms permutations; however, I was wondering if someone could explain exactly what is going on in the return statement.
def perm(l):
sz = len(l)
print (l)
if sz <= 1:
print ('sz <= 1')
return [l]
return [p[:i]+[l[0]]+p[i:] for i in range(sz) for p in perm(l[1:])]
