Python中数字以及算数运算符的相关使用

WBOY
Release: 2016-06-06 11:14:16
Original
1286 people have browsed it

Python数字
数字数据类型用于存储数值。
他们是不可改变的数据类型,这意味着改变数字数据类型会分配一个新的对象。
当你指定一个值时,Number对象就会被创建:

var1 = 1
var2 = 10
Copy after login


您也可以使用del语句删除一些对象引用。
del语句的语法是:

del var1[,var2[,var3[....,varN]]]]
Copy after login


您可以通过使用del语句删除单个或多个对象。例如:

del var
del var_a, var_b
Copy after login


Python支持四种不同的数值类型:

  1. int(有符号整型)
  2. long(长整型[也可以代表八进制和十六进制])
  3. float(浮点型)
  4. complex(复数)

实例
一些数值类型的实例:

长整型也可以使用小写"L",但是还是建议您使用大写"L",避免与数字"1"混淆。Python使用"L"来显示长整型。
Python还支持复数,复数由实数部分和虚数部分构成,可以用a + bj,或者complex(a,b)表示, 复数的实部a和虚部b都是浮点型。

Python算术运算符
以下假设变量a为10,变量b为20:

以下实例演示了Python所有算术运算符的操作:

#!/usr/bin/python

a = 21
b = 10
c = 0

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

c = a - b
print "Line 2 - Value of c is ", c 

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

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

c = a % b
print "Line 5 - Value of c is ", c

a = 2
b = 3
c = a**b 
print "Line 6 - Value of c is ", c

a = 10
b = 5
c = a//b 
print "Line 7 - Value of c is ", c

Copy after login

以上实例输出结果:

Line 1 - Value of c is 31
Line 2 - Value of c is 11
Line 3 - Value of c is 210
Line 4 - Value of c is 2
Line 5 - Value of c is 1
Line 6 - Value of c is 8
Line 7 - Value of c is 2
Copy after login

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template