2022年8月15日
a = 'aa'
b = 'bb'
tuple_ = (a, b)
dict_ = {'c': 'cc', 'd': 'dd'}
def test(*args, **kwargs):
print(args)
for item in args:
print(item)
print(kwargs)
for key, value in kwargs.items():
print(key, value)
if __name__ == '__main__':
test('vv', 'ww', x='xx', y='yy', *tuple_, **dict_)
结果：
('vv', 'ww', 'aa', 'bb')
vv
ww
aa
bb
{'x': 'xx', 'y': 'yy', 'c': 'cc', 'd': 'dd'}
x xx
y yy
c cc
d dd
进程已结束,退出代码0…
2022年7月28日
import inspect
class A(object):
a = 10
@classmethod
def get_attribute(cls):
print('1', vars(cls))
print('2', dir(cls))
print('3', cls.__dir__(cls))
print('4', cls.__dict__)
print('5', locals())
print('6', globals())
print('*' * 20)
attr_ = inspect.getmembers(cls, lambda a: not inspect.ismethod(a))
print('1', attr_)
attr_ = filter(lambda a: not a[0].startswith('__'), attr_)
print('2', attr_)
attr_ = lis…
2022年7月17日
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>XX商城-注册</title>
<link rel="stylesheet" type="text/css" href="{{ static('css/rese…
2022年6月22日
simple_http_server_web_framework.zip
import sys
import threading
import socket
import os.path
import json
import struct
import hashlib
import re
import framework
from content_type import content_type
class NetworkCommunicateRole(object):
def role_choose(self):
while True:
role = input("请选择角色 Http服务（h）/服务端（s）/客户端（c）：")
if role == "h":
return "http_server",
elif role == "s":
return "server",
elif role == "c…
2022年6月21日
def decorator(cls):
_instance = {}
print(f"instance: {_instance}")
def inner():
if cls not in _instance:
_instance[cls] = cls()
print(f"instance: {_instance}")
return _instance[cls]
return inner
@decorator
class ClassA(object):
def __init__(self):
self.a = 10
obj_1 = ClassA()
obj_2 = ClassA()
print(id(obj_1))
print(id(obj_2))
# ClassA = decorator(ClassA)
# obj_A = ClassA()
# print(obj_A.a)…
2022年6月19日
import pymysql
connector = pymysql.connect(host="localhost", port=3306, user="root", password="", database="python", charset="utf8")
cursor = connector.cursor()
print(cursor.execute("show tables;"))
print(cursor.fetchall())
print(cursor.execute("desc class;"))
print(cursor.fetchall())
print(cursor.execute("select * from class;"))
print(cursor.fetchall())
id_ = input("请输入ID:")
paramete…
2022年6月16日
from copy import copy, deepcopy
a_1 = [1, ["a", "b"]]
a_2 = a_1.copy()
print(id(a_1), id(a_1[0]), id(a_1[1]))
print(id(a_2), id(a_2[0]), id(a_2[1]))
print("*" * 20)
# 浅拷贝
a_1 = [1, ["a", "b"]]
a_2 = copy(a_1)
print(id(a_1), id(a_1[0]), id(a_1[1]))
print(id(a_2), id(a_2[0]), id(a_2[1]))
print("*" * 20)
# 深拷贝
a_1 = [1, ["a", "b"]]
a_2 = deepcopy(a_1)
print(id(a_1), id(a_1[0]), id(a_1[1]))
print(id(a_2), id(a_2[0])…
2022年6月16日
generator_1 = (i for i in range(3))
print(generator_1)
# print(*generator_1)
print(next(generator_1))
print("*" * 20)
for i in generator_1:
print(i)
print("*" * 20)
def fibonacci(num):
a = 0
b = 1
i = 0
while i < num:
result = a
a, b = b, a + b
i += 1
yield result
generator_2 = fibonacci(100)
print(next(generator_2))
print("*" * 20)
for i in generator_2:
print(i)…
2022年6月16日
from contextlib import contextmanager
class OpenFile(object):
def __init__(self, file, mode='r', buffering=None, encoding=None, errors=None, newline=None, closefd=True):
self.file = file
self.mode = mode
def __enter__(self):
print("OpenFileA上文方法")
self.fd = open(self.file, self.mode)
return self.fd
def __exit__(self, exc_type, exc_val, exc_tb):
print("OpenFileA下文方法")
self.fd.close()
@contextman…
2022年6月16日
class PersonA(object):
def __init__(self):
self.__age = 20
@property
def age(self):
return self.__age
@age.setter
def age(self, new):
self.__age = new
class PersonB(object):
def __init__(self):
self.__age = 20
def get_age(self):
return self.__age
def set_age(self, new):
self.__age = new
age = property(get_age, set_age)
person = PersonA()
print("PersonA")
print(person.age)
person.age = 30
print(person.age)…
