from
random
import
randint
data
= [randint(-10, 10)
for
_
in
xrange(10
)]
print
data
e
= filter(
lambda
x: x >=
0, data)
print
e
或者使用 列表解析 速度快
[x
for
x
in
data
if
x >= 0]
对字典的筛选
d = {x: randint(60, 100)
for
x
in
xrange(1, 21
)}
print
d
print
{k: v
for
k, v
in
d.iteritems()
if
v > 90}
对 集合 的筛选
找出 被 3整除 的
data = [randint(-10, 10)
for
_
in
xrange(10
)]
s
=
set(data)
print
s
print
{x
for
x
in
s
if
x % 3 == 0}
