2020/19.py
def convert(rn, n11s) -> str:
        """
        This function converts a rule number to a regex. It uses the ``for`` loop to
        deal with the OR cases, and then joins them with "|"s. For each of the sequence
        rules, it calls itself recursively to generate a regex for the sub-rule.
        """
        parts = []
        if rn == 8:
            return "(" + convert(42, n11s) + ")" + "+"
        elif rn == 11:
            if n11s == 0:
                return "(" + convert(42, n11s) + convert(31, n11s) + ")"
            return (
                "(("
                + convert(42, n11s)
                + convert(31, n11s)
                + ")|("
                + convert(42, n11s)
                + convert(11, n11s - 1)
                + convert(31, n11s)
                + "))"
            )

        for r in RULES[rn]:
            if isinstance(r, str):
                return r
            else:
                parts.append("".join(convert(x, n11s) for x in r))
        return "(" + "|".join(parts) + ")"

        This function converts a rule number to a regex. It uses the ``for`` loop to
        deal with the OR cases, and then joins them with "|"s. For each of the sequence
        rules, it calls itself recursively to generate a regex for the sub-rule.
        
This function converts a rule number to a regex. It uses the ``for`` loop to
deal with the OR cases, and then joins them with "|"s. For each of the sequence
rules, it calls itself recursively to generate a regex for the sub-rule.
This function converts a rule number to a regex . It uses the ` ` for ` ` loop to deal with the OR cases and then joins them with " | " s . For each of the sequence rules it calls itself recursively to generate a regex for the sub - rule .
def convert(rn, n11s) -> str:
        parts = []
        if rn == 8:
            return "(" + convert(42, n11s) + ")" + "+"
        elif rn == 11:
            if n11s == 0:
                return "(" + convert(42, n11s) + convert(31, n11s) + ")"
            return (
                "(("
                + convert(42, n11s)
                + convert(31, n11s)
                + ")|("
                + convert(42, n11s)
                + convert(11, n11s - 1)
                + convert(31, n11s)
                + "))"
            )
        for r in RULES[rn]:
            if isinstance(r, str):
                return r
            else:
                parts.append("".join(convert(x, n11s) for x in r))
        return "(" + "|".join(parts) + ")"
def convert ( rn , n11s ) -> str : parts = [ ] if rn == 8 : return "(" + convert ( 42 , n11s ) + ")" + "+" elif rn == 11 : if n11s == 0 : return "(" + convert ( 42 , n11s ) + convert ( 31 , n11s ) + ")" return ( "((" + convert ( 42 , n11s ) + convert ( 31 , n11s ) + ")|(" + convert ( 42 , n11s ) + convert ( 11 , n11s - 1 ) + convert ( 31 , n11s ) + "))" ) for r in RULES [ rn ] : if isinstance ( r , str ) : return r else : parts . append ( "" . join ( convert ( x , n11s ) for x in r ) ) return "(" + "|" . join ( parts ) + ")"
This function converts a rule number to a regex.
This function converts a rule number to a regex .
"""
        This function converts a rule number to a regex. It uses the ``for`` loop to
        deal with the OR cases, and then joins them with "|"s. For each of the sequence
        rules, it calls itself recursively to generate a regex for the sub-rule.
        """
rn
n11s