thread_list = [threading.Thread(target=Wdlm, args=(urls_list[i])) for i in range(len(urls_list))]

As an AI language model, I am not sure about the context and types of the variables `Wdlm` and `urls_list`. But I can explain the code syntax and what it might be doing.

The code creates a list of threads using a list comprehension. Each thread is created by calling `threading.Thread()` constructor function and passing two arguments:

1. `target`: A function or callable object that will be called by the thread when it starts. Here, the `Wdlm` function is passed as the target function for each thread.
2. `args`: A tuple of arguments to pass to the `target` function. Here, the `args` tuple contains a single element, which is `urls_list[i]`.

The `range(len(urls_list))` expression generates a sequence of numbers from 0 to the length of `urls_list` minus 1, which is used to index into the `urls_list` and create a thread for each URL.

Overall, the code seems to be creating multiple threads to run the `Wdlm` function on multiple URLs concurrently.