1,列表推导式
#coding:utf8
x1 = [x for x in range (5)]
print(x1)
odd = [x for x in range(10) if x % 2 !=0]
print(odd)
运行结果为:
2, 字典推导式
#coding:utf8
x1 = {n: n**2 for n in range(5)}
print(x1)
x2 = {v: k for k, v in x1.items()}
print (x2)
3, 集合推导式
集合推导式会帮我们去除重复的元素
#coding:utf8
x1 = {i**2 for i in [-1,-5,1,2,-2]}
print(x1)
运行结果: