Python函数基础实例详解【函数嵌套,命名空间,函数对象,闭包函数等】

def auth(*args,name,pwd):
  print(name,pwd)
auth(pwd='213',name='egon')
def register(name,age):
  print(type(name),type(age))
register(123,[1,2,3])

def max2(x,y):
  if x > y:
    return x
  else:
    return y
def max3(x,y,z):
  res1=max(x,y)
  res2=max(res1,z)
  return res2
print(max3(88,99,100))

def func1():
  print('from func1')
  def func2(): #func2=内存地址
    print('from func2')
  print(func2) #<function func1.<locals>.func2 at 0x0000024907A098C8>
  func2()
  func2()
  func2()
func1()

x=888888888
def func():
  pass

x=1
def f1():
  def f2():
    print(x)
  f2()
f1()
if 10 > 3:
  y=33333
while True:
  xxxxx=123123123

def f1():
  # len=1
  def f2():
    # len=2
    print(len)
  f2()
f1()

x=1
y=x
def bar():
  print('from bar')
f=bar
f()

x=1
def func(a):
  print(a)
func(x)

x=1
def foo():
  return x
res=foo()
print(res)

def bar():
  print('from bar')
def foo(func): #func=<function bar at 0x00000225AF631E18>
  return func #return <function bar at 0x00000225AF631E18>
# print(bar)
f=foo(bar) #f=<function bar at 0x00000225AF631E18>
# print(f)
f()

x=1
l=[x,]
print(l)
def get():
  print('from get')
def put():
  print('from put')
l=[get,put]
# print(l)
l[0]()

f=func

def auth():
  print('请登录：')
def reigster():
  print('注册：')
def search():
  print('查看：')
def transfer():
  print('转账')
def pay():
  print('支付')
dic={
  '1':auth,
  '2':reigster,
  '3':search,
  '4':transfer,
  '5':pay
}
def interactive():
  while True:
    print('''
    1 认证
    2 注册
    3 查看
    4 转账
    5 支付
    '''
    )
    choice = input('请输入编号：').strip()
    if choice in dic:
      dic[choice]()
    else:
      print('非法操作')
interactive()

def outter():
  x=2
  def inner():
    # x=1
    print('from inner',x)
  return inner
f=outter() #f=inner
def foo():
  x=1111111111111111111111111111
  f()
foo()

import requests:
def get(url):
  response=requests.get(url)
  if response.status_code == 200:
    print(response.text)
get('https://www.baidu.com')

import requests
import time
def outter(url): #url='https://www.baidu.com'
  # url='https://www.baidu.com'
  def get():
    response=requests.get(url)
    if response.status_code == 200:
      print(response.text)
  return get
baidu=outter('https://www.baidu.com')
python=outter('https://www.python.org')
baidu()
print('=====================>')
time.sleep(3)
baidu()