for w in weights if isinstance(weights, list) else [weights]:
时间: 2024-05-31 13:08:27 浏览: 14
This line of code checks if the variable "weights" is a list. If it is a list, then it iterates over each element in the list using a for loop. If it is not a list, then it creates a new list with the single element "weights" and iterates over that single element.
The syntax for this line of code is a conditional expression. It has the format:
value_if_true if condition else value_if_false
In this case, the condition is "isinstance(weights, list)", which checks if "weights" is an instance of the class "list". If the condition is true, then the value_if_true statement is executed, which is the for loop that iterates over each element in the list. If the condition is false, then the value_if_false statement is executed, which creates a new list with the single element "weights" and iterates over that single element.