qq_38501057的博客

-- coding=utf-8 -- 文件 test_1 = open(‘alice.txt’, ‘a’) test_1.write(“hello 123”) test_1.write("\nword") test_1.close() test_1 = open(r’alice.txt’) test_1.read() print(test_1.read(3)) yield生成器 def foo()...

re正则表达式 通配符. 对特殊字符进行转义\ 字符集[a-z]匹配其中的任意字符，[^a]匹配除a以外的其它字母 选择符和自模式 管道符号（|），匹配’python|perl’ ‘p(ython|erl)’ 可选项和重复子模式 在子模式后面加上问号，它就变成了可选项r’(http:\)? ()*重复0次或多次 ()+重复1次或多次 (){m,n}重复m~n次 import re re.compi...

############# import sys, pprint sys.path.append(‘D:/pycharm_work’) import day_7 dir(day_7) import hell4 hell4.hello() pprint.pprint(sys.path)#查找模块位置 import copy print(dir(copy))#dir查看模块内容 print([n fo...

class TestIterator: value = 0 def __next__(self): self.value += 1 if self.value > 10: raise StopIteration return self.value def __iter__(self): return self ti = TestIterator() pri...

私有属性_x class Rectangle: def init(self): self.width = 0 self.height = 0 def setSize(self, size): self.width, self.height = size # 使两个值都等于size def getSize(self): return self.width, self.height...

菲波那契数列 fibs = [0, 1] num = int(input("how many fibonacci numbers do you want? ")) for i in range(num - 2): fibs.append(fibs[-2] + fibs[-1]) print(fibs) def init(data): data[‘first’] = {} data[‘middle...

x=input(“x:”) y=input(“y:”)#input假设用户输入的是标准表达式， print(int(x)*int(y)) print(pow(2, 3)) from math import sqrt import cmath print(sqrt(8)) print(cmath.sqrt(-1)) print(repr(“hello word”)) # 以合法的形式表达值 pri...

def test(num): print(“在函数内部%d对应的地址是%d” % (num, id(num))) result = “hello” print(“函数要返回的内存地址是%d” % id(result)) return num a = 10 print(“a变量的数据存储地址是%d” % id(a)) r = test(a) print("%s的内存地址是 %d" % (r, id®...

-- coding=UTF-8-- import json username = input(“what is your name?”) filename = ‘username.json’ with open(filename, ‘w’) as f_obj: json.dump(username, f_obj) print(“we’re rember you,when your back " +...

分析文本 title = “Alice in Wordlad” title.split() filename = ‘alice.txt’ try: with open(filename) as f_obj: contens = f_obj.read() except FileNotFoundError: msg = “Sorry,the file " + filename + " does not...

-- coding=utf-8 -- from day_7 import Car,Electricar my_new_car=Car(‘audi’,‘a4’,2016) print(my_new_car.get_description_name()) my_new_car.odometer_reading=23 my_new_car.read_odometer() my_tesla=Electr...

class Car( ): “”“一次模拟汽车的尝试”"" def init(self,make,model,year): #初始化描述汽车的属性 self.make =make self.model = model self.year = year self.odometer_reading=0 def get_description_name(self): #返回整洁的描述性信息 long...

def greet_user(username,man):#username是形参 print(“hello!”+username+ ’ ‘+man) greet_user(‘yang’,‘n’)#yang是实参 def describe_pets(pet_name,animal_type=‘dog’): print("\nl have a "+’ ‘+animal_type+’ ‘+pet_na...

#continue的用法 current_number=0 while current_number<10: current_number+=1 if current_number %2==0: continue print(current_number) #在列表之间移动元素 unconfirmed_users=[‘alice’,‘brian’,‘candace’] confirmed_u...

message=’’ active =True while active: message=input(“quit”) if message ==‘quit’: active=False else: print(message) while True: city=input(“lanzou”) if city == ‘quit’: break else: print(“l would love ...

#字典 alien_0={‘color’:‘green’,‘points’:5} print(alien_0[‘color’]) alien_0[‘x_postion’]=0 alien_0[‘y_postion’]=25#添加键-值对 print(alien_0) alien_1={} alien_1[‘color’]=‘green’ alien_1[‘points’]=5 print(alie...

for value in range(1,5): print(value) numbers=list(range(1,6))#生成列表 print(numbers) squares=[] for value in range(1,11): square=value2 squares.append(square) print(squares) print(min(squares)) print(ma...

网络 小型服务器 import socket s = socket.socket() host = socket.gethostname() # 获取主机名 port = 1234 s.bind((host, port)) s.listen(1) # 监听给定的地址 while True: c, addr = s.accept() # 等待下一个连接 print(‘got connectio...