How to weed out filenames in python?

Question

Python

The task is as follows: there are a number of files with various names. Watch these files there is a file with the symbol "_". In a variable it is necessary to push a name of a file with this character. Judging by what I found on the Internet, the command looks like I indicated below.

import os

name=os.walk("_")
print(name)

But at the same time, instead of showing the names, it displays the line "generator object _walk at 0x0000027D5A97E6D0" Is this code structure appropriate? If yes, how to fix it? If "no", which one do you need?