def __init__(
        self,
        content: Optional[str] = None,
        min: int = 0,
        max: int = HUGE,
        name: Optional[str] = None,
    ) -> None:
        """
        Initializer.

        Args:
            content: optional sequence of subsequences of patterns;
                     if absent, matches one node;
                     if present, each subsequence is an alternative [*]
            min: optional minimum number of times to match, default 0
            max: optional maximum number of times to match, default HUGE
            name: optional name assigned to this match

        [*] Thus, if content is [[a, b, c], [d, e], [f, g, h]] this is
            equivalent to (a b c | d e | f g h); if content is None,
            this is equivalent to '.' in regular expression terms.
            The min and max parameters work as follows:
                min=0, max=maxint: .*
                min=1, max=maxint: .+
                min=0, max=1: .?
                min=1, max=1: .
            If content is not None, replace the dot with the parenthesized
            list of alternatives, e.g. (a b c | d e | f g h)*
        """
        assert 0 <= min <= max <= HUGE, (min, max)
        if content is not None:
            f = lambda s: tuple(s)
            wrapped_content = tuple(map(f, content))  # Protect against alterations
            # Check sanity of alternatives
            assert len(wrapped_content), repr(
                wrapped_content
            )  # Can't have zero alternatives
            for alt in wrapped_content:
                assert len(alt), repr(alt)  # Can have empty alternatives
        self.content = wrapped_content
        self.min = min
        self.max = max
        self.name = name

        Initializer.

        Args:
            content: optional sequence of subsequences of patterns;
                     if absent, matches one node;
                     if present, each subsequence is an alternative [*]
            min: optional minimum number of times to match, default 0
            max: optional maximum number of times to match, default HUGE
            name: optional name assigned to this match

        [*] Thus, if content is [[a, b, c], [d, e], [f, g, h]] this is
            equivalent to (a b c | d e | f g h); if content is None,
            this is equivalent to '.' in regular expression terms.
            The min and max parameters work as follows:
                min=0, max=maxint: .*
                min=1, max=maxint: .+
                min=0, max=1: .?
                min=1, max=1: .
            If content is not None, replace the dot with the parenthesized
            list of alternatives, e.g. (a b c | d e | f g h)*
        
src/blib2to3/pytree.py