python基础第九天

　　python基础学习

　范围查询：

>>> list(range(1, 11))
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

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>>> L = []
>>> for x in range(1, 11):
...    L.append(x * x)
...
>>> L
[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]
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>>> x = 'abc'
>>> y = 123
>>> isinstance(x, str)
True
>>> isinstance(y, str)
False
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斐波拉契数列

def fib(max):
    n, a, b = 0, 0, 1
    while n < max:
        print(b)
        a, b = b, a + b
        n = n + 1
    return 'done'

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>>> f = abs
>>> f(-10)
10
***************************************************************

 sorted([36, 5, -12, 9, -21]) 排序

sorted([36, 5, -12, 9, -21], key=abs) 按照绝对值

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