[Tkinter] color a string of characters in tkinter

[atlass218]

thanks for the code
I will check it and try to understand it

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I modify your code and add another data with thw same first sentence

import tkinter as tk
 
data = """'This is line 1.'
'This is line 2.'
'Yet another line.'
'And finally the last line.'
"""

data2 = """'This is line 1.'

'Yet another line.'

"""
root = tk.Tk()
 
txtwidget = tk.Text(root)

for line in data:
    txtwidget.insert(tk.END, line)
txtwidget.pack(expand=1, fill=tk.BOTH)

for line2 in data2:
    txtwidget.insert(tk.END, line2)
txtwidget.pack(expand=1, fill=tk.BOTH)
 
# adding a tag to a part of text specifying the indices
def highlight_text(tag_name, lineno, start_char, end_char, bg_color=None, fg_color=None):
    txtwidget.tag_add(tag_name, f'{lineno}.{start_char}', f'{lineno}.{end_char}')
    txtwidget.tag_config(tag_name, background=bg_color, foreground=fg_color)
     
# text.tag_add("start", "1.8", "1.13")
# text.tag_config("start", background="black", foreground="yellow")
 
highlight_text(tag_name='tag1', lineno=1, start_char=1, end_char=5, fg_color='red')
highlight_text(lineno=1, start_char=9, end_char=15, bg_color="black", fg_color='yellow', tag_name='zingo')
 
 
root.mainloop()

my second data is not colored like the first data