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- from decimal import Decimal
-
- from django.conf import settings
- from django.utils.safestring import mark_safe
-
-
- def format(number, decimal_sep, decimal_pos=None, grouping=0, thousand_sep='',
- force_grouping=False, use_l10n=None):
- """
- Get a number (as a number or string), and return it as a string,
- using formats defined as arguments:
-
- * decimal_sep: Decimal separator symbol (for example ".")
- * decimal_pos: Number of decimal positions
- * grouping: Number of digits in every group limited by thousand separator.
- For non-uniform digit grouping, it can be a sequence with the number
- of digit group sizes following the format used by the Python locale
- module in locale.localeconv() LC_NUMERIC grouping (e.g. (3, 2, 0)).
- * thousand_sep: Thousand separator symbol (for example ",")
- """
- use_grouping = (use_l10n or (use_l10n is None and settings.USE_L10N)) and settings.USE_THOUSAND_SEPARATOR
- use_grouping = use_grouping or force_grouping
- use_grouping = use_grouping and grouping != 0
- # Make the common case fast
- if isinstance(number, int) and not use_grouping and not decimal_pos:
- return mark_safe(str(number))
- # sign
- sign = ''
- if isinstance(number, Decimal):
- str_number = '{:f}'.format(number)
- else:
- str_number = str(number)
- if str_number[0] == '-':
- sign = '-'
- str_number = str_number[1:]
- # decimal part
- if '.' in str_number:
- int_part, dec_part = str_number.split('.')
- if decimal_pos is not None:
- dec_part = dec_part[:decimal_pos]
- else:
- int_part, dec_part = str_number, ''
- if decimal_pos is not None:
- dec_part = dec_part + ('0' * (decimal_pos - len(dec_part)))
- dec_part = dec_part and decimal_sep + dec_part
- # grouping
- if use_grouping:
- try:
- # if grouping is a sequence
- intervals = list(grouping)
- except TypeError:
- # grouping is a single value
- intervals = [grouping, 0]
- active_interval = intervals.pop(0)
- int_part_gd = ''
- cnt = 0
- for digit in int_part[::-1]:
- if cnt and cnt == active_interval:
- if intervals:
- active_interval = intervals.pop(0) or active_interval
- int_part_gd += thousand_sep[::-1]
- cnt = 0
- int_part_gd += digit
- cnt += 1
- int_part = int_part_gd[::-1]
- return sign + int_part + dec_part
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