[Tkinter] Text.search() regexp not working

[Yoriz]

Using \y works with your code for me on python 3.9.4

\y matches only at the beginning or end of a word

from tkinter import *
 
class Application(object):
 
    def __init__(self, main_win):
        self.main_win = main_win
 
def search(text_widget, keyword, tag):
    pos = '1.0'
    case_insensitive = '(?i)'
    whole_word_left = '\y'
    whole_word_right = '\y'
    while True:
        idx = text_widget.search(f'{case_insensitive}{whole_word_left}{keyword}{whole_word_right}', pos, "end-1c", regexp=True)
        if not idx:
            break
        print(idx)
        pos = '{}+{}c'.format(idx, len(keyword))
        text_widget.tag_add(tag, idx, pos)
 
def main():
    win = Tk()
    app = Application(win)
    win.geometry("800x600+1000+300")
 
    txt = Text(win, bg='cyan')
    txt.pack()
    txt.insert('end-1c', 'import\nimport time\nfrom time import sleep\nImpo signal\nImport sys\nimpo board\nimport busio\nImpo digitalio\nfrom digitalio import Direction, Pull\nfrom RPi import GPIO\n10from adafruit_mcp230xx.mcp23017 import MCP23017\n')
 
    txt.tag_config('passed', background='yellow')
    search(txt, 'impo', 'passed')
 
    win.mainloop()
 
if __name__ == '__main__':
    main()

Output:
4.0
6.0
8.0

[rfresh737]

Yep, \y worked for me too. Much thanks.

I had to back down from python 3.9 to 3.6 (last month) because there is a notebook tab color bug in 3.9. My project uses tabs and I needed to change their colors.