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GitHub Repository: jackfrued/Python-100-Days
 Path: blob/master/Day01-15/code/Day07/list3.py
Views: 729
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"""

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生成列表

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- 用range创建数字列表

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- 生成表达式

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- 生成器

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Version: 0.1

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Author: 骆昊

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Date: 2018-03-06

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"""

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# 生成Fibonacci序列的生成器

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def fib(n):

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    a, b = 0, 1

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    for _ in range(n):

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        a, b = b, a + b

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        yield a

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def main():

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    # 用range创建数值列表

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    list1 = list(range(1, 11))

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    print(list1)

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    # 生成表达式

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    list2 = [x * x for x in range(1, 11)]

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    print(list2)

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    list3 = [m + n for m in 'ABCDEFG' for n in '12345']

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    print(list3)

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    print(len(list3))

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    # 生成器(节省空间但生成下一个元素时需要花费时间)

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    gen = (m + n for m in 'ABCDEFG' for n in '12345')

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    print(gen)

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    for elem in gen:

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        print(elem, end=' ')

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    print()

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    gen = fib(20)

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    print(gen)

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    for elem in gen:

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        print(elem, end=' ')

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    print()

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if __name__ == '__main__':

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    main()

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