【Python从零开始】第五回_Python基础之"赋值运算符"

󰃭 2017-07-31

  • 关于上回的练习解答
  • 关于上节内容的回顾
  • 练习题
  • 赋值运算符

关于上回的练习解答

请利用以上所学知识1，运用加减乘除计算出四个数字的24点，并打印。

关于上节内容的回顾

abs(x)->取绝对值

int(x)->取整数

float(x)->取浮点数

练习题

abs(“1”)能正常输出吗？如果不能的话请说出理由。

赋值运算符

1-1：python也允许我们同时为多个变量赋值（包括为多个变量赋不同类型的值），例如：

a = b = c = 3  #三个变量赋同样的值  
d, e, f = -3, 3.3, 'u3v3'  #三个变量赋不同类型的值

1-2：赋值运算的种类

# -*- coding: UTF-8 -*-

a = 1
b = 2
c = 3

c = a + b
print ("Line 1 - Value of c is ", c)

c += a
print ("Line 2 - Value of c is ", c )

c *= a
print ("Line 3 - Value of c is ", c )

c /= a 
print ("Line 4 - Value of c is ", c )

c  = 2
c %= a
print ("Line 5 - Value of c is ", c)

c **= a
print ("Line 6 - Value of c is ", c)

c //= a
print ("Line 7 - Value of c is ", c)

以上输出结果如下：

Line 1 - Value of c is  3
Line 2 - Value of c is  4
Line 3 - Value of c is  4
Line 4 - Value of c is  4.0
Line 5 - Value of c is  0
Line 6 - Value of c is  0
Line 7 - Value of c is  0