def _find_first_of ( line , substrings ) : starts = ( ( line . find ( i ) , i ) for i in substrings ) found = [ ( i , sub ) for i , sub in starts if i != - 1 ] if found : return min ( found ) else : return - 1 , None
get index of line containing substring python
Find earliest occurrence of one of substrings in line .
def _find_first_of(line, substrings):
    """Find earliest occurrence of one of substrings in line.

    Returns pair of index and found substring, or (-1, None)
    if no occurrences of any of substrings were found in line.
    """
    starts = ((line.find(i), i) for i in substrings)
    found = [(i, sub) for i, sub in starts if i != -1]
    if found:
        return min(found)
    else:
        return -1, None