Python编程：Truth选项卡

Question

我们必须在Python中为p^q、pvq、p->；q和p<；->；q格式化真值表。 我不知道如何格式化p->；q或p<；->；q。它不断给我错误，说它是无效语法。我如何为“if p then q”和“if only p then only q”包含if语句

def getSym(x): 
if x: 
return 'T' 
else: 
return 'F' 

values=[True, False] 
for p in values: 
for q in values: 
print(getSym(p), getSym(q), getSym(p and q)) 
print(getSym(p), getSym(q), getSym(p or q))

Answer 1

布尔蕴涵P => Q在逻辑上等价于NOT P OR Q，布尔等价<=>可以用等式运算符==表示：

print(getSym(p), getSym(q), getSym(p and q))    #  AND
print(getSym(p), getSym(q), getSym(p or q))     #  OR
print(getSym(p), getSym(q), getSym(not p or q)) #  =>
print(getSym(p), getSym(q), getSym(p == q))     #  <=>