1 from django.conf import settings

     2 

     3 def format(number, decimal_sep, decimal_pos, grouping=0, thousand_sep=''):

     4     """

     5     Gets a number (as a number or string), and returns it as a string,

     6     using formats definied as arguments:

     7 

     8     * decimal_sep: Decimal separator symbol (for example ".")

     9     * decimal_pos: Number of decimal positions

    10     * grouping: Number of digits in every group limited by thousand separator

    11     * thousand_sep: Thousand separator symbol (for example ",")

    12 

    13     """

    14     # sign

    15     if float(number) < 0:

    16         sign = '-'

    17     else:

    18         sign = ''

    19     # decimal part

    20     str_number = unicode(number)

    21     if str_number[0] == '-':

    22         str_number = str_number[1:]

    23     if '.' in str_number:

    24         int_part, dec_part = str_number.split('.')

    25         if decimal_pos:

    26             dec_part = dec_part[:decimal_pos]

    27     else:

    28         int_part, dec_part = str_number, ''

    29     if decimal_pos:

    30         dec_part = dec_part + ('0' * (decimal_pos - len(dec_part)))

    31     if dec_part: dec_part = decimal_sep + dec_part

    32     # grouping

    33     if settings.USE_L10N and settings.USE_THOUSAND_SEPARATOR and grouping:

    34         int_part_gd = ''

    35         for cnt, digit in enumerate(int_part[::-1]):

    36             if cnt and not cnt % grouping:

    37                 int_part_gd += thousand_sep

    38             int_part_gd += digit

    39         int_part = int_part_gd[::-1]

    40 

    41     return sign + int_part + dec_part

    42