python : tkinter treeview colors are not updating
As already mentioned this is a known issue with the tkinter library > 8.6.8. This version of tkinter is preinstalled with newer versions of Python (> 3.7).
A work around for this has been proposed here:https://core.tcl-lang.org/tk/tktview?name=509cafafae
Define the function that filters out arguments
def fixed_map(option): # Returns the style map for 'option' with any styles starting with # ("!disabled", "!selected", ...) filtered out # style.map() returns an empty list for missing options, so this should # be future-safe return [elm for elm in style.map("Treeview", query_opt=option) if elm[:2] != ("!disabled", "!selected")]Map the styling using the new function
style = ttk.Style()style.map("Treeview", foreground=fixed_map("foreground"), background=fixed_map("background"))With this the tag_configure() should work as intended.
-what version of python are you using (python -V) in cmd
-the last version(3.7) of python seems like it has bugs to color tags
-if you are using python (3.7) just install python 3.6 (it may work with newer version also)