Python-filter the number of times

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-

def is_palindrome(n):
    return str(n) == str(n)[::-1]


# Test
output = filter(is_palindrome, range(1, 1000))
print('1~1000:', list(output))
if list(filter(is_palindrome, range(1, 200))) == [1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 101,
                                                  111, 121, 131, 141, 151, 161, 171, 181, 191]:
    print('Test PASS~')
else:
    print('Test FAIL!')