運算子
1、算數運算: +,-,*,/,%,**,//
print (3+2) => 5print (3-2) => 1print (2*4) = > 8print (9/3) => 3print (2**2) => 4print (100%51) => 49print (9//2) => 4
2、比較運算: ==,!=, ,>,=,
print (3==2) => Falseprint (3!=2) => Trueprint (24) => True #python3.5中已取消，整合至!=print (9>3) => Trueprint (2 Falseprint (100>=51) => Trueprint (9 False
3、賦值運算: =,+ =,-=,*=,/=,%=,**=,//=
a = 5print (a) => 5a = 5b = 1b += a # b=b+aprint (b) => 6a = 5b = 1b -= a # b=b-aprint (b) => -4a = 5b = 1b *= a # b= b*aprint (b) => 5a = 5b = 1b /= a # b = b/aprint (b) => 0.2a = 5b = 1b **= a # b = b**aprint (b) => 1a = 5b = 1b %= a # b = b%aprint (b) => 1a = 5b = 1b //= a # b = b//aprint (b) => 0
4、邏輯計算: and, or ,not
a = Trueb = Falseprint (a and b) => False #只有a,b均為真時，才為真print (a or b) => True # 只要a,b中有一個為真時，就為真print (not a) => False # 非真print (not b) => True # 非假
5、成員運算: in, not in
a = [11,22,33,44]
b = 11
c = 123
print (b in a) >True
print (c not in a) => True
