temp
变量。该temp变量用来存储拳头变量的值(temp = a)
,允许你交换两个变量的值(a = b)
,然后分配的值temp
到所述第二变量。a = 11
b = 7
temp = a
a = b
b = temp
print(a) # 7
print(b) # 11
a = 11
b = 7
a, b = b, a
print(a) # 7
print(b) # 11
( +, -)
或乘法和除法 ( *, /)
。这种交换方法是基于计算两个数字的总和,然后使用总和和与总和的差来交换它们。a = 11
b = 7
a = a + b # a = 18, b = 7
b = a - b # a = 18, b = 11
a = a - b # a = 7, b = 11
print(a) # 7
print(b) # 11
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