Python基础语法（一）

Python基础语法

print('hello world')print("您好，Python")# 变量赋值counter = 100;  # 赋值整型变量miles = 1000.0  # 浮点型name = "JoyTan" # 字符串print(counter)print(miles)print(name)# 多个变量赋值a = b = c = 1a,b,c = 1,2,"JoyTna"print("a=",a)print("b=",b)print("c=",c)if a == b:    print("1")else:    print("0")var = 100;if(var == 100 ) : print("变量 var 的值为 100")print("Good bye！")# while循环print("循环开始")count = 0while count < 9 :    print("The Count is", count)    count = count + 1print("循环结束")# continuei = 1while i < 10 :    i += 1    if i%2 > 0 :    # 非双数时跳出循环        continue    print(i)        # 输出双数 2、4、6、8、10print("continue")# breaki = 1while 1:           # 循环条件为1 必定成立    print(i)        # 输出 1 - 10    i += 1    if i > 10 :     # 当 i 大于 10 时跳出循坏        breakprint("break")# 无限循环'''var = 1while var == 1 :    num = input("输入一个数字：")    print("您输入的数字是：", num)print("无限循环")'''# 循环使用 else 语句count = 0while count < 5 :    print(count)    count = count + 1else:    print("大于5",count)print("for 循环")for letter in "Python" :    print("当前字母：", letter)fruits = ["banana","apple","mango"]for fruit in fruits :    print("当前字母：", fruit)print("for 循环")# 使用else语句for num in range(10,20):    for i in range(2,num):        if num%i == 0:            j = num/i            print("%d 等于 %d * %d" % (num,i,j))            break    else:        print(num,"是一个质数")var1 = "Hello World!"var2 = "Python Programming"print("var1[0]",var1[0])print("var2[1:5]：",var2[1:5])print("Updated String :-",var1[:6]+"Python")