Python随心记--三元运算

sum(list[range(40)])
#速度比下面的慢
sum(x ** 2 for i in xrange(4))

name = 'pang'
res = 'is' if name == 'pang' else 'chun'
print(res)

三元运算列表解析

l = [i for i in range(10)]
l = [i for i in range(10) if i > 5]
print(l)

l = (i for i in range(10))   #生成器表达式
print(l)
print(l.__next__())
print(l.__next__())
print(l.__next__())
print(next(l))
print(next(l))
print(next(l))