tkInter constraining the width only

[akineko]

Hello everyone,

I'm writing a Tkinter program and trying to constraint the window
size.
I want to set the minimum of the width and the height and the maximum
of the width, but not the height.
I can use minsize(width=min_width, height=min_height) from Wm method
to limit the minimum sizes.
Similarly I thought I could use maxsize(width=max_width, height=None)
to limit the maximum sizes.

Unfortunately, it didn't work.
maxsize() complained if only width is given.

Is there any easy way to constraint a Tkinter window so that the sizes
are set except it can grow vertically.

Any suggestions are greatly appreciated.

Best regards,
Aki Niimura