# ###身份证运算符 is 和 is not(检查两个数据在内存当中是否是同一个值)

var1 = 6

var2 = 6

print(id(var1),id(var2))

var1 = "好"

var2 = "不好"

# is用来判断2个变量的地址是否一致

res = var1 is var2

print(res)

res =var1 is not var2

print(res)

# var1 == var2 与 var1 is var2 区别

"""

一个是比较两个值是否相同

一个是比较两个值的地址是否相同

"""

# ### 逻辑运算符 and or not

print("<======>")

#and 逻辑与

'''全真则真,一假则假'''

res = True and True

res = True and False

res = False and True

res = False and False

print(res)

# or 逻辑或

"""全假则假,一真则真"""

res = True or True

res = True or False

res = False or False

res = False or True

print(res)

# not 逻辑非

'''真变假,假变真'''

res = not False

res = not True

print (res)

#(1) 逻辑短路(后面的代码就不走了)

'''

两种情况

res = False and 布尔值

res = True or 布尔值

'''

# print默认返回一个None 而None的布尔值是假

# res = False and print(1)

res = True and print(2)

res = True or print(3)

res = False or print(4)

print(res)

#逻辑运算符优先级

'''() > not > and > or'''

# (5+6)*3

res = 5 or 6 and 7

# 5 or 7 =>5

res = (5 or 6) and 7

# 5 and 7 =>7

res = not (5 or 6) and 7

# | (5 or 6) => 5 | not 5 =>False | False and 7 => False

res = 5>6 or 7<8 and 9>10 or 11<12

'''

False or True and False or True

False or False or True

False or True =>True

'''

print(res)

'''

有一种情况不用考虑and 和 or优先级问题

就是or短路 比如	True or .........=>结果一定为 True

'''

# ### 数据类型的判断 isinstance

'''

isinstance(要判断的数据,判断的类型)要么返回真,要么返回假

isinstance(要判断的数据,(元组,放上各种类型,满足一个条件即为真))

'''

print("<=========>")

# 5 是int 类型的么

res = isinstance(5,int)

res = isinstance("678",list)

print(res)

#有一个类型满足 返回真,一个不满足返回假

res = isinstance(5,(list,tuple,str,int))

print(res)