a = [1,3,5] b = ( x for x in a if a.count(x) > 0) a = [5,7,9] list(b)
时间: 2024-04-04 21:18:30 浏览: 9
The output of the code would be:
[5]
Explanation:
- The list `a` initially contains the elements [1, 3, 5].
- The variable `b` is defined as a generator expression that iterates over the elements `x` in `a`, but only includes `x` in the output if `a.count(x) > 0`. In other words, it only includes elements that appear at least once in `a`.
- Since `a.count(x)` only counts the number of occurrences of `x` in `a`, it will always be greater than 0 for every element in `a`.
- The list `a` is then modified to contain the elements [5, 7, 9].
- Finally, `list(b)` is called to convert the generator expression `b` into a list. Since `b` only includes elements that appear in the original list `a`, and only the element 5 appears in both the original and modified lists, the output is [5].