if aaa: elif bbb : else :while s > 0: print('there is no money')
range() pass
dict = {‘name’:’kinleon’,’age’:25} s = set{[1,2,3,3]} s = {1,2,3}
abs(-20) max(1,2,3) int() hex()
def function(): return from fileName import functionName
higher property
切片 list[0:5:2] ‘abcdef’[:2]
迭代 for xx in … from collections import Iterable isinstance([1,2,3],Iterable) True for i, value in enumerate([‘a’, ‘b’, ‘c’]): for x,y in dict:
列表生成式 (PS:看到这我又一次感叹Python的变态) list[1,2,3,4,5] = list(range(1,6)) [x * x for x in range(1, 11) if x % 2 == 0] [m + n for m in ‘ABC’ for n in ‘XYZ’] [k + ‘=’ + v for k, v in d.items()] [s.lower() for s in L]
生成器 l = () 斐波那契数列原理 通过算法推算后面的内容 def fib(max): n, a, b = 0, 0, 1 while n < max: print(b) a, b = b, a + b n = n + 1 return 'done' 函数内部有yield 这个函数就是generator 生成器主要指的是一种机制 一边循环一边计算
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