逻辑术语 & 真值表

逻辑术语

for python

• and 与
• or 或
• not 非
• != (not equal) 不等于
• ==(equal)等于
• >= (greater-than-equal) 大于等于
• <=(less-than-equal) 小于等于
• True 真
• False 假

真值表

NOT	True?
not False	True
not True	False

OR	True?
True or False	True
True or True	True
False or False	True
False or False	False

AND	True?
True and False	False
True and True	True
False and True	False
False and False	False

NOT OR	True?
not (True or False)	False
not (True or True)	False
not (False or True)	False
not (False or False)	True

NOT AND	True?
not (True and False)	True
not (True and True)	False
not (False and True)	True
not (False and False)	True

!=	True?
1 != 0	True
1 != 1	False
0 != 1	True
0 != 0	False

==	True?
1 == 0	False
1 == 1	True
0 == 1	False
0 == 0	True