python 零散知识点（列表和字典推导式）

列表推导式

A = [i for i in range(0,10)]
B = [ i**2 for i in A]

字典推导式

 for k,v in zip(['a','b','c','d'],[1,2,3,4]):
        print(k,v)

d = { key:value for (key,value) in zip(['a','b','c','d'],[1,2,3,4])}
d