斐波那契数列-python3

"""
输出斐波那契数列的前20个数
1 1 2 3 5 8 13 21 ...

Version: 1.0.0
Author: Catherine
Data: 2019-03-11
"""

a = 0
b = 1
for _ in range(20):
    (a, b) = (b, a + b)
    print(a, end=' ')