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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_line_no_from_comments(py_line):
 """Return the line number parsed from the comment or 0."""

    matched = LINECOL_COMMENT_RE.match(py_line)
    if matched:
        return int(matched.group(1))
    else:
        return 0