tkinter keysym_num value is incorrect

[spacether]

BPO	42695
Nosy	@serhiy-storchaka

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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assignee = None
closed_at = <Date 2020-12-20.21:33:13.671>
created_at = <Date 2020-12-20.21:22:53.061>
labels = []
title = 'tkinter keysym_num value is incorrect'
updated_at = <Date 2020-12-20.21:53:52.277>
user = 'https://bugs.python.org/spacether'

bugs.python.org fields:

activity = <Date 2020-12-20.21:53:52.277>
actor = 'spacether'
assignee = 'none'
closed = True
closed_date = <Date 2020-12-20.21:33:13.671>
closer = 'serhiy.storchaka'
components = []
creation = <Date 2020-12-20.21:22:53.061>
creator = 'spacether'
dependencies = []
files = []
hgrepos = []
issue_num = 42695
keywords = []
message_count = 3.0
messages = ['383458', '383461', '383463']
nosy_count = 2.0
nosy_names = ['serhiy.storchaka', 'spacether']
pr_nums = []
priority = 'normal'
resolution = 'third party'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue42695'
versions = []

[spacether]

Hi there.
On my MacOS 10.14.16 laptop with a qwerty keyboard I was testing tkinter keyboard listening for an azerty keyboard layout by switching the layout to French - PC
When I press qwerty keys Shift + \ I expect to see 'μ' printed.
When looking at the tkinter events for that key press we see:

down {'keysym': 'Shift_L', 'keysym_num': 65505, 'keycode': 131072, 'char': ''}
down {'keysym': 'tslash', 'keysym_num': 956, 'keycode': 956, 'char': 'μ'}
up {'keysym': 'asterisk', 'keysym_num': 42, 'keycode': 2753468, 'char': 'μ'}
up {'keysym': 'Shift_L', 'keysym_num': 65505, 'keycode': 131072, 'char': ''}

So the char value is correct but the keysym_num is not the expected 181 for mu.
Comparing this to pressing Shift + / to generate the section symbol (§) we see:

down {'keysym': 'Shift_L', 'keysym_num': 65505, 'keycode': 131072, 'char': ''}
down {'keysym': 'section', 'keysym_num': 167, 'keycode': 167, 'char': '§'}
up {'keysym': 'section', 'keysym_num': 167, 'keycode': 2883751, 'char': '§'}
up {'keysym': 'Shift_L', 'keysym_num': 65505, 'keycode': 131072, 'char': ''}

Which produces the expected keysym_num of 167.

TLDR: the kysym_num value when writing the mu character is incorrect. It should be 181 and logging shows values of 956 and 42. Can this be fixed?

Here is the keyboard listener program which can be used for verification:

from tkinter import *

params = ['keysym', 'keysym_num', 'keycode', 'char']

def keyup(e):
    d = {p: getattr(e, p) for p in params}
    print('up', d)
    # print('up', e.__dict__)
def keydown(e):
    d = {p: getattr(e, p) for p in params}
    print('down', d)
    # print('down', e.__dict__)
    pass

root = Tk()
frame = Frame(root, width=100, height=100)
frame.bind("<KeyPress>", keydown)
frame.bind("<KeyRelease>", keyup)
frame.pack()
frame.focus_set()
root.mainloop()

Note: my python version was installed from python.org and is:

Python 3.9.1 (v3.9.1:1e5d33e9b9, Dec  7 2020, 12:44:01) 
[Clang 12.0.0 (clang-1200.0.32.27)] on darwin

[serhiy-storchaka]

Tkinter is just a wrapper around Tcl/Tk. Please report a bug in Tk on the corresponding bug tracker.

https://wiki.tcl-lang.org/page/How+do+I+report+a+bug+in+Tcl%2C+Tk%2C+...

[spacether]

TK bug ticket has been created at https://core.tcl-lang.org/tk/tktview/ffe6925b916caac02acae53f745e95dd1c557019