不回说一点话，简简单单粘贴点代码，一是慰藉，二是寻找知识的历史轨迹～～～

Python的class声明

def outSide():

print("outside method")

class MyClass:

sharedVar = "testVariable"

f = outSide

def __init__(self, args1: object, args2: object) -> object:

self.ar1 = args1

self.ar2 = args2

def test(self):

return "test class method"

if __name__ == "__main__":

xx = MyClass("jjj", "babb")

print(xx.ar1)

print(xx.ar2)

print(xx.sharedVar)

test1 = xx.test

print(test1())

xxx = MyClass("jjj", "test")

print(MyClass.f)

Python的异常

class B(Exception):

pass

class C(B):

pass

class D(C):

pass

class DemoException(Exception):

def __init__(self, x: object, y: object):

self.xx = x

self.yy = y

if __name__ == "__main__":

for cls in [B, C, D]:

try:

print("111111")

raise cls()

print("232323")

except D:

print("exception D")

except C:

print("exception C")

except B:

print("exception B")

try:

i = int(input("please input number:"))

print("input i:", i)

except Exception:

print("oops input data is not number, try again")

finally:

print("finally")

try:

x = 4

y = 3

if x % y > 0:

print("x:", x, "y:", y)

raise DemoException(x, y)

print("23232323233")

except DemoException as demo:

print(demo.xx / demo.yy)

break

Python 的线程

import threading

class DemoThread(threading.Thread):

def __init__(self, array1):

threading.Thread.__init__(self)

self.arr = array1

def run(self):

for i in self.arr:

print("i", i)

array = ["11", "232", "3232344", "888"]

thread = DemoThread(array)

thread.start()

Python 的作用域

def scope_test():

def do_local():

spam = "local spam"

def do_nonlocal():

nonlocal spam

spam = "nonlocal spam"

def do_global():

global spam

spam = "global spam"

spam = "test spam"

do_local()

print("After local assignment :", spam)

do_nonlocal()

print("After nonlocal assignment :", spam)

do_global()

print("After global assignment :", spam)

if __name__ == "__main__":

scope_test()

print("After local assignment :", spam)