Python 入门学习笔记 2

目录

Python逻辑运算符

   一  if else认知与代码实践

---

Python逻辑运算符

   一  if else认知与代码实践

# -*- coding: utf-8 -*-
"""
Created on Thu Feb 20 16:38:56 2020

@author: Mr.Niu
"""
a = 21
b = 10
c = 0
 
if  a == b :
   print("a 等于 b")
else:
    if  a > b :
       print ("a > b")
    else:
       print("a < b")
print('----------------------------')


a =12
b =12
if  a == b :
    print("a 等于 b")
elif  a > b :
    print ("a > b")
elif  a < b :
    print("a < b")
print('----------------------------')



a= None
b= 5
c= False
d=10
if  a and  b:
    print('a和b都是真')
elif not a:
    print('a是假')
elif not b:
    print('b是假')
elif c or d:
    print('c或者d有一个真')