How can I reinitialize the readline module in Python?

In my python program I need to catch the WINCH signal like this:

def WinResize(num, stack):
    # DO SOME STUFF HERE

signal.signal(signal.SIGWINCH, WinResize)

The problem is that readline doesn't get the signal and its internal view of the window is false. I tried a trick using

readline.set_completer(readline.get_completer())

at the end of the WinResize function which partially solves my problem but not completely. With this solution, the new size is updated on readline if i continue to give input until it goes to newline. Until that point it has internally the previous size.

If I don't catch the signal, readline works as expected. I want to completely solve this issue.

Here is a video that demonstrates the issue: https://streamable.com/1tja9g

Solution

Finally after countless experiments I found the solution to my problem. When I import the readline module AFTER setting up my WINCH signal handler it works as expected. I don't know why though.