- let具有作用域属性
for i in [1,2,3,4,5]:
var i = i
这样相当于直接输出 i = 5
for i in [1,2,3,4,5]:
let i = i
相当于
i = 1
i = 2
i = 3
i = 4
i = 5
分别执行了五次，分别是各个的作用域，不会被覆盖
© 本文著作权归作者所有，转载前请务必署名
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for i in [1,2,3,4,5]:
var i = i
这样相当于直接输出 i = 5
for i in [1,2,3,4,5]:
let i = i
相当于
i = 1
i = 2
i = 3
i = 4
i = 5
分别执行了五次，分别是各个的作用域，不会被覆盖
© 本文著作权归作者所有，转载前请务必署名
目录LEGB规则global表达式属性引用与名字引用属性空间小结LEGB规则从Python2.2开始，由于引入了嵌套函数，所以最好的方式应该是内层函数找不到某个变量时先去外层函数找，而不是直接就跑到global空间里面找。
startwe know the origin npm resource are base in github, But we china area can not stable connect with github. But the china some big business will mi
>>>a = '1'>>>print(a)1>>>b = '1'.zfill(2*4)>>>print(b)00000001
import imageio, os, sysdef png_gif(path): png_lst = os.listdir(path) frames = [] for i in png_lst: frames.append(imageio.imread(path +
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