<commit_before>"""A convenience which constructs expression trees from an easy-to-read syntax

Use this unless you have a compelling reason not to; it performs some
optimizations that would be tedious to do when constructing an expression tree
by hand.

"""
from collections import Mapping
from collections import OrderedDict
from inspect import isfunction, ismethod

from six import (text_type, iterkeys, itervalues, iteritems,
    python_2_unicode_compatible, PY2)

from parsimonious.exceptions import BadGrammar, UndefinedLabel
from parsimonious.expressions import (Literal, Regex, Sequence, OneOf,
    Lookahead, Optional, ZeroOrMore, OneOrMore, Not, TokenMatcher,
    expression)
from parsimonious.nodes import NodeVisitor
from parsimonious.utils import evaluate_string

@python_2_unicode_compatible
class Grammar(OrderedDict):
    """A collection of rules that describe a language

    You can start parsing from the default rule by calling ``parse()``
    directly on the ``Grammar`` object::

        g = Grammar('''
                    polite_greeting = greeting ", my good " title
                    greeting        = "Hi" / "Hello"
                    title           = "madam" / "sir"
                    ''')
        g.parse('Hello, my good sir')

    Or start parsing from any of the other rules; you can pull them out of the
    grammar as if it were a dictionary::

        g['title'].parse('sir')

    You could also just construct a bunch of ``Expression`` objects yourself
    and stitch them together into a language, but using a ``Grammar`` has some<commit_msg>Remove unused imports.<commit_after>"""A convenience which constructs expression trees from an easy-to-read syntax

Use this unless you have a compelling reason not to; it performs some
optimizations that would be tedious to do when constructing an expression tree
by hand.

"""
from collections import OrderedDict
from inspect import isfunction, ismethod

from six import (text_type, itervalues, iteritems, python_2_unicode_compatible, PY2)

from parsimonious.exceptions import BadGrammar, UndefinedLabel
from parsimonious.expressions import (Literal, Regex, Sequence, OneOf,
    Lookahead, Optional, ZeroOrMore, OneOrMore, Not, TokenMatcher,
    expression)
from parsimonious.nodes import NodeVisitor
from parsimonious.utils import evaluate_string

@python_2_unicode_compatible
class Grammar(OrderedDict):
    """A collection of rules that describe a language

    You can start parsing from the default rule by calling ``parse()``
    directly on the ``Grammar`` object::

        g = Grammar('''
                    polite_greeting = greeting ", my good " title
                    greeting        = "Hi" / "Hello"
                    title           = "madam" / "sir"
                    ''')
        g.parse('Hello, my good sir')

    Or start parsing from any of the other rules; you can pull them out of the
    grammar as if it were a dictionary::

        g['title'].parse('sir')

    You could also just construct a bunch of ``Expression`` objects yourself
    and stitch them together into a language, but using a ``Grammar`` has some
{'fraction_non_alphanumeric': 0.0696708213486737, 'fraction_numerical': 0.0019175455417066154, 'mean_word_length': 3.27012278308322, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '7451513', 'n_tokens_mistral': 838, 'n_tokens_neox': 795, 'n_words': 352}