Python基础-高阶函数-filter()

filter()-过滤序列

取奇数序列

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Python filter 用法

# 是否为奇数
def isOdd(x):
return (x % 2) != 0

def filterTest():
# 函数，序列
result = filter(isOdd, [1, 2, 3,4,5])
print(result)

filterTest()

D:\PythonProject>python run.py
[1, 3, 5]

删除空字符串

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Python filter 用法

# 删除空字符串
def whithoutEmptyString(s):
return s and s.strip()

def filterTest():
# 函数，序列
result = filter(whithoutEmptyString, ["A", "", "B"])
print(result)

filterTest()

D:\PythonProject>python run.py
['A', 'B']