python 中逗号分隔符和正常赋值的计算顺序不同
Difference in evaluation order of comma separator and normal assignment in python
谁能告诉我普通赋值和逗号分隔符赋值的区别？
正常分配：
prev.next = head.next
head.next = None
head = head.next
逗号分隔符分配：
prev.next,head.next,head= head.next,None,head.next
两种情况下的执行顺序有何不同？谁能解释一下评估顺序？
提前致谢。
无论您是否正在解包，等号的右侧总是先求值再分配给左侧的值。
正在写这个：
a,b,c = 1,2,3
就像这样写
temp = (1, 2, 3)
(a, b, c) = temp
顺序固定：
An assignment statement evaluates the expression list (remember that this can be a single expression or a comma-separated list, the latter yielding a tuple) and assigns the single resulting object to each of the target lists, from left to right.
谁能告诉我普通赋值和逗号分隔符赋值的区别？
正常分配：
prev.next = head.next
head.next = None
head = head.next
逗号分隔符分配：
prev.next,head.next,head= head.next,None,head.next
两种情况下的执行顺序有何不同？谁能解释一下评估顺序？
提前致谢。
无论您是否正在解包，等号的右侧总是先求值再分配给左侧的值。
正在写这个：
a,b,c = 1,2,3
就像这样写
temp = (1, 2, 3)
(a, b, c) = temp
顺序固定：
An assignment statement evaluates the expression list (remember that this can be a single expression or a comma-separated list, the latter yielding a tuple) and assigns the single resulting object to each of the target lists, from left to right.