g = [i for i in range(30) if i % 3 == 0 ]#完整的列表推导式
print(g)

g = [i*i for i in range(30) if i % 3 == 0 ]
print(g)

l =[[‘dsfdsa‘,‘husserhi‘,‘shdhfs‘,‘hfrues‘],[‘sdshfhsi‘,‘sgfygs‘,‘sdfsd‘]]
trt = [name for i in l for name in i if name.count(‘s‘) == 2]
print(trt)

d = {‘a‘:‘23‘,‘d‘:‘12‘}
d_c = {d[k]:k for k in d}
print(d_c)

d = {‘a‘:23,‘d‘:12,‘A‘:234,‘G‘:123}
f = {k.lower():d.get(k.lower,0) + d.get(k.upper(),0) for k in d}
print(f)

g = {l*l for l in [12,34,23,2,3,23,54,4,4,4,4,4,4]}
print(g)