<commit_before>from __future__ import absolute_import, division, print_function

import toolz
import datashape
import re

from keyword import iskeyword

import numpy as np

from toolz import concat, memoize, partial, first
from toolz.curried import map, filter

from datashape import dshape, DataShape, Record, Var, Mono, Fixed
from datashape.predicates import isscalar, iscollection, isboolean, isrecord

from ..compatibility import _strtypes, builtins, boundmethod
from .core import Node, subs, common_subexpression, path
from .method_dispatch import select_functions
from ..dispatch import dispatch

__all__ = ['Expr', 'ElemWise', 'Field', 'Symbol', 'discover', 'Projection',
           'projection', 'Selection', 'selection', 'Label', 'label', 'Map',
           'ReLabel', 'relabel', 'Apply', 'Slice', 'shape', 'ndim', 'label',
           'symbol', 'Coerce', 'coerce']


_attr_cache = dict()


def isvalid_identifier(s):
    """Check whether a string is a valid Python identifier

    Examples<commit_msg>Remove coerce from visible blaze spectrum<commit_after>from __future__ import absolute_import, division, print_function

import toolz
import datashape
import re

from keyword import iskeyword

import numpy as np

from toolz import concat, memoize, partial, first
from toolz.curried import map, filter

from datashape import dshape, DataShape, Record, Var, Mono, Fixed
from datashape.predicates import isscalar, iscollection, isboolean, isrecord

from ..compatibility import _strtypes, builtins, boundmethod
from .core import Node, subs, common_subexpression, path
from .method_dispatch import select_functions
from ..dispatch import dispatch

__all__ = ['Expr', 'ElemWise', 'Field', 'Symbol', 'discover', 'Projection',
           'projection', 'Selection', 'selection', 'Label', 'label', 'Map',
           'ReLabel', 'relabel', 'Apply', 'Slice', 'shape', 'ndim', 'label',
           'symbol', 'Coerce']


_attr_cache = dict()


def isvalid_identifier(s):
    """Check whether a string is a valid Python identifier

    Examples
{'fraction_non_alphanumeric': 0.10363457760314342, 'fraction_numerical': 0.0, 'mean_word_length': 4.973607038123167, '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': '86830', 'n_tokens_mistral': 582, 'n_tokens_neox': 569, 'n_words': 215}