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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 style_from_dict(style_dict, include_defaults=True):
 """ Create a ``Style`` instance from a dictionary or other mapping. The dictionary is equivalent to the ``Style.styles`` dictionary from pygments, with a few additions: it supports 'reverse' and 'blink'. Usage:: style_from_dict({ Token: '#ff0000 bold underline', Token.Title: 'blink', Token.SomethingElse: 'reverse', }) :param include_defaults: Include the defaults (built-in) styling for """

    assert isinstance(style_dict, Mapping)

    if include_defaults:
        s2 = {}
        s2.update(DEFAULT_STYLE_EXTENSIONS)
        s2.update(style_dict)
        style_dict = s2

    # Expand token inheritance and turn style description into Attrs.
    token_to_attrs = {}

    # (Loop through the tokens in order. Sorting makes sure that
    # we process the parent first.)
    for ttype, styledef in sorted(style_dict.items()):
        # Start from parent Attrs or default Attrs.
        attrs = DEFAULT_ATTRS

        if 'noinherit' not in styledef:
            for i in range(1, len(ttype) + 1):
                try:
                    attrs = token_to_attrs[ttype[:-i]]
                except KeyError:
                    pass
                else:
                    break

        # Now update with the given attributes.
        for part in styledef.split():
            if part == 'noinherit':
                pass
            elif part == 'bold':
                attrs = attrs._replace(bold=True)
            elif part == 'nobold':
                attrs = attrs._replace(bold=False)
            elif part == 'italic':
                attrs = attrs._replace(italic=True)
            elif part == 'noitalic':
                attrs = attrs._replace(italic=False)
            elif part == 'underline':
                attrs = attrs._replace(underline=True)
            elif part == 'nounderline':
                attrs = attrs._replace(underline=False)

            # prompt_toolkit extensions. Not in Pygments.
            elif part == 'blink':
                attrs = attrs._replace(blink=True)
            elif part == 'noblink':
                attrs = attrs._replace(blink=False)
            elif part == 'reverse':
                attrs = attrs._replace(reverse=True)
            elif part == 'noreverse':
                attrs = attrs._replace(reverse=False)

            # Pygments properties that we ignore.
            elif part in ('roman', 'sans', 'mono'):
                pass
            elif part.startswith('border:'):
                pass

            # Colors.

            elif part.startswith('bg:'):
                attrs = attrs._replace(bgcolor=_colorformat(part[3:]))
            else:
                attrs = attrs._replace(color=_colorformat(part))

        token_to_attrs[ttype] = attrs

    return _StyleFromDict(token_to_attrs)