48 lines
785 B
Python
48 lines
785 B
Python
"""
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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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