01 Python 邏輯去運算

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#and or not

#優先順序 （）>not>and>or

#and or notprint(2>1 and 1<4 or 2<3 and 9>6 or 2<4 and 3<2)#         True     or    True    or     False#True

print(3>4 or 4<3 and 1==1)                               #Falseprint(1<2 and 3<4 or 1>2)                                #Trueprint(2>1 and 3<4 or 4>5 and 2<1)                        #Trueprint(1>2 and 3<4 or 4>5 and 2>1 or 9<8)                 #Falseprint(1>1 and 3<4 or 4>5 and 2>1 and 9>8 or 7<6)         #Falseprint(not 2>1 and 3<4 or 4>5 and 2>1 and 9>8 or 7<6)     #False

數字與布爾值轉換

#int-->boolprint(bool(2))   #Trueprint(bool(-2))  #Trueprint(bool(0))   #False#bool-->intprint(int(True))   #1print(int(False))  #0

x or y，若 x 為非0，則返回 x

print(1 or 2)    #1print(3 or 2)    #3print(0 or 2)    #2print(0 or 100)  #100

x and y，若 x 為真，則返回 y

print(1 and 2)   #2print(0 and 2)   #0

 #and or 組合

print(2 or 100 or 3 or 4)  #2print(0 or 4 and 3 or 2)   #3

#綜合 第一個為布爾型則返回布爾型，第一個為數值型，則返回數值型

print(1>2 and 3 or 4 and 3<2) #Falseprint(2 or 1<3 and 2)         #2

 

print(0 or 5<4)               #Falseprint(0 and 3>1)              #0print(3>1 and 0)              #0print(3>1 and 2 or 2<3 and 3 and 4 or 3>2)  #2

 

01 Python 邏輯去運算