Very strange error of indentation

[samsonite]

More details, here http://imgbox.com/adMgXtI5
Cheers

[DeaD_EyE]

If you have a Python script with tabs in source code, the script is broken.

I guess there are tools available to check for this problem.
But it makes fun, to write an own checker, which shows lines with tabs in your console.

from pathlib import Path
import sys
import click
import colorama


def tab_pos(line):
    return [idx for (idx, char) in enumerate(line) if char == '\t']


def scan(script):
    script = Path(script)
    with script.open() as fd:
        for line_no, line in enumerate(fd, 1):
            tabs = tab_pos(line)
            if tabs:
                yield line_no, line, tabs


def print_matches(results):
    RED = colorama.Back.RED
    RESET = colorama.Style.RESET_ALL
    for line_no, line, tabs in results:
        line = list(line.rstrip('\n'))
        for tab in tabs:
            line[tab] = RED + '<\t>' + RESET
        line = ''.join(line)
        print(f'{line_no:>4} -> {line}')


@click.command()
@click.argument('script')
def main(script):
    """
    This program detects tabs in source code and will print the result to console.
    """
    results = list(scan(script))
    if not results:
        print('File has no tabs')
        return 0
    else:
        print_matches(results)
        return 1

if __name__ == '__main__':
    sys.exit(main())

Output:
   1 -> <	>Hello World
   2 -> This<	>is<	>a<	>tab

You need click and colorama.
A tabulator is replaced with RED + '<\t>' + RESET

[samsonite]

Hi Verb Conjugator!
If you get a glance to the source (uploaded into the opening post) http://reionization.org/wp-content/uploa...st2ra.html you may note that the mismatch is created by in [4] piece of code, undoubtely coming from Mathematica editor.
So, for future applications I'll be careful to take Python codes from such sources, which could conflict with my preferred editor (geany).
Thank you, and cheers