Do not get how Python iterates over a file

[DeaD_EyE]

You could use fileinput to read many files.

import fileinput


files = fileinput.input(("file1.txt", "file2.txt"), encoding="utf8")

for line in files:
    lineno = files.lineno()
    filename = files.filename()
    filelineno = files.filelineno()
    print(f"[{filename:<15}] [{filelineno:>4d}]: {line}", end="")

So, if you need the current file, line number and total line number, you could use this.