Bug Fix :)

lambda_fizzbuzz.py

#!/usr/bin/python

buzz = lambda x: [(lambda _x: "" if _x % 5 else "Buzz")(x), x]
fizz = lambda x: (
    (
        (lambda _x: "" if _x % 3 else "Fizz")(x[1])
        + x[0])
    if (x[0] or not (x[1] % 3)) else x[1])


for i in range(1, 100):
    print fizz(buzz(i))