#coding:utf-8

varline = 2 ;print(varline);#打印字符串print("hello Python");print("你好，Python");#整型和字符串的轉(zhuǎn)化num1 = 100 ;num2 = "100";num3 = num1 + int(num2);print(num3);#字符串操作str1 = "hello world" ;str2 = str1 * 3 ;string_count = len(str1);print(string_count);print(str2);#字符串索引等價(jià)print(str1[0]); print(str1[-11])  #===>hprint(str1[1]); print(str1[-10])  #===>eprint(str1[2]); print(str1[-9])   #===>l#可以將字符串進(jìn)行分割print(str1[0:5]);print(str1[6:11]); #===> hello   worldprint(str1[-4:]);#函數(shù)的定義和使用def Print():  print("hello world");  return "sss" ;sss = Print();print(sss);def add(arg1 , arg2):  return arg1 + arg2 ;print(add(1,2));def getTempatuare(temp):  return temp *9/5 + 32 ;print(str(getTempatuare(35)) + "'F");#克轉(zhuǎn)千克算法def print_kg(g):  return float(g / 1000) ;print(str(print_kg(1)) + "kg");#求直角三角形斜邊的長(zhǎng)度def Line_print(arg1,arg2):  return ((arg1*arg1 + arg2 * arg2))**0.5print("The right triangle third side's length is " + str(Line_print(3,4)));#str_rp = str1.replace(str1[:3],'*'*9);#print(str_rp)str11 = "{} a word she can get what she {} for."str12 = "{preposition} a word she can get what she {verb} for"str13 = "{0} a word she can get what she {1} for."str111 = str11.format('With','came');str121 = str12.format(preposition = 'With',verb = 'came')str131 = str13.format('With','came')print(str111)print(str121)print(str131)#單獨(dú)創(chuàng)建file1 = open('F://'+'hello.txt','w')file1.write("Hello world");file1.close()#使用函數(shù)創(chuàng)建def text_create(name, msg):  desktop_path = 'F://'  full_path = desktop_path + name + '.txt'  file = open(full_path,'w')  file.write(msg)  file.close()  print('Done')text_create('Yang','hello world') # ????#變量的比較teststr1 = "Hello"teststr2 = "World"teststr3 = "Hello"print(teststr1 in teststr2)print(teststr1 is teststr3)print(bool(teststr1))print(bool(''))print(not teststr1)print(teststr1 < teststr3 and teststr2 > teststr1)print(teststr1 > teststr2 or teststr3 < teststr1)#python邏輯判斷學(xué)習(xí)a = 1b = 3if a < b :  a = 3  b = 2else:  a = 2  b = 3print(a,b);if a < b:  a = 3  b = 2elif a > b:  a = 2  b = 3else:  a = 100  b = 200print(a,b)for i in 1,2,3,4,5,6:  print(i)for string_str in "hello","world","world":  print(string_str)for str1111 in "Hello":  print(str1111)

#python列表===>#特點(diǎn)：可以裝python的所有類型，包括元組，列表，字典等city = ['廣東','云南','廣西','江西','HongKong','Shenzhen',123456]for i in 0,1,2,3,4,5,6:  print(city[i])city.insert(1,'北京') #列表的插入for i in 0,1,2,3,4,5,6:  print(city[i])city.remove('HongKong') #列表的刪除for i in 0,1,2,3,4,5,6:  print(city[i])del city[0]  #使用del方法刪除列表中的元素for i in 0,1,2,3,4,5:  print(city[i])#python元組 ===>#特點(diǎn)：不可修改，可被查看以及索引num = ('1','2','3','4','5')for i in 0,1,2,3,4:  print(num[i])#python字典 ===>#特點(diǎn)：鍵值成對(duì)存在，鍵不可重復(fù)，值可重復(fù)，鍵不可改，值可以變，可以為任何對(duì)象Dog = {'name':'sundy','age':18}Dog.update({'tel':119}) #往字典中添加鍵值對(duì)print(Dog)del Dog['name'] #往字典中刪除鍵值對(duì)print(Dog)#集合num_set = {1,2,3,4,1,5}num_set.add(6) #往集合里添加元素print(num_set)num_set.discard(3) #從集合里刪除元素print(num_set)

#coding:utf-8#定義一個(gè)類class Anmial:  var = 100  Dog = ['runing','eat','sleep'] #Dog是這個(gè)類的屬性  def function(self):   #類里的方法    if Anmial.var == 10:      print(Anmial.var)    else:      print(self+str(Anmial.Dog))    return Anmial.var#實(shí)例化類Dog1 = Anmial()print(Anmial.Dog)#遍歷類中的成員for i in Anmial.Dog:  print(i)#創(chuàng)建實(shí)例屬性===>類似創(chuàng)建一個(gè)與Dog一樣的屬性Anmial.log = '會(huì)飛','Hello','Monkey'print(Anmial.log)Anmial.function("屬性:")class CocaCola():  formula = ['caffeine','suger','water','soda']  def __init__(self,local_name): #===>self相當(dāng)于可以用來(lái)訪問(wèn)類中的成員或者創(chuàng)建屬性      self.logo_local = '橙汁'      if local_name == '可樂(lè)':        print(local_name)      elif local_name == '橙汁':        print(local_name)      else:        print('西瓜汁')  def drink(self): #===>調(diào)用該方法的時(shí)候等效于 coke = CocaCola.drink(coke)    print('Energy!')coke = CocaCola('可樂(lè)')coke1 = CocaCola('橙汁')coke2 = CocaCola('梨汁')#類的繼承===>xuebi相當(dāng)于CocaCoal的子類,CocaCoal相當(dāng)于父類class xuebi(CocaCola):  formula = ['白色','黃色','綠色']xuebi = xuebi(CocaCola) #將CocaCola放在括號(hào)中，表面xuebi集成于CocalColaprint(xuebi.formula)xuebi.drink()      #這樣子類就可以調(diào)用父類的方法，繼續(xù)延用了