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# coding: utf8
from __future__ import unicode_literals
# import the symbols for the attrs you want to overwrite
from ...attrs import LIKE_NUM
# Overwriting functions for lexical attributes
# Documentation: https://localhost:1234/docs/usage/adding-languages#lex-attrs
# Most of these functions, like is_lower or like_url should be language-
# independent. Others, like like_num (which includes both digits and number
# words), requires customisation.
# Example: check if token resembles a number
_num_words = ['zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven',
'eight', 'nine', 'ten', 'eleven', 'twelve', 'thirteen', 'fourteen',
'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen', 'twenty',
'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety',
'hundred', 'thousand', 'million', 'billion', 'trillion', 'quadrillion',
'gajillion', 'bazillion']
def like_num(text):
text = text.replace(',', '').replace('.', '')
if text.isdigit():
return True
if text.count('/') == 1:
num, denom = text.split('/')
if num.isdigit() and denom.isdigit():
return True
if text in _num_words:
return True
return False
# Create dictionary of functions to overwrite. The default lex_attr_getters are
# updated with this one, so only the functions defined here are overwritten.
LEX_ATTRS = {
LIKE_NUM: like_num
}