Python 运算符

print (3 != 3)
#print(3 <> 3) #不等于  版本取消

print(3 >= 2)

a = 10
b = a # 把a的值 赋值给变量b
c = a
print(b)
print(c)

a = 10
b = 20
a += b #a = a + b 累加 sum = sum + count  sum += count
print(a)
print(b)

count = 1
while count <= 100:
    print(count)
    #count = count + 1
    count += 1


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and:并且,左右两端同时为真,结果才能是真

or:或者,左右两端有一个是真,结果就是真

not:非,非真既假,非假既真 不真->假  不假->真

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print(3 > 2 and 4 < 6 and 5 > 7)  #False
print(5 < 6 or 7 < 8 or 9 < 6 or 3 >2)
print(not 5 < 6)

# 混合运算
# 运算顺序: () => not => and => or 当出现相同的运算的时候 从左往右算
print(3 > 2 or 5 < 7 and 6 > 8 or 7 < 5) #true

# 当出现 x or y 的时候,判断x是否是0 如果x==0 then y 否则返回x
print(1 or 2)  #1
print(0 or 2)  #2
print(3 or 0)
print(4 or 0)
#
print(3 or 0 or 2 or 1 or 8 or 188)
print(0 or 3 or 0 or 2 or 0 or 8 or 0 or 188)

#当出现x and y 的时候, 和or相反
print(1 and 2) #2
print(0 and 3) #0
print(3 and 0)
print(4 and 0)
#
print(9 and 3 and 4 and 1 and 4 and 8)
print(1 and 2 or 3)

print(1 and 2 > 4)

#False 当成0来看
print(False and 1)
print(3 > 5 or 5 < 6 and 7)

print(4 > 5 or 7 and 8 < 6 or 3 and 4)

# 成员运算
content = input("请输入你的评论:")
if "马化腾" in content: #content 中是否包含了xxx
    print("你的评论不合法")
else:
    print("你的评论是不合法的")

ad = input("请输入你的评论:")
if "最" in ad or "第一" in ad or "全球" in ad:   #or是只要出现 and是都出现
    print("不合法的")
else:
    print("合法的")