registrasion/templatetags/registrasion_tags.py
def available_credit(context):
    ''' Calculates the sum of unclaimed credit from this user's credit notes.

    Returns:
        Decimal: the sum of the values of unclaimed credit notes for the
            current user.

    '''

    notes = commerce.CreditNote.unclaimed().filter(
        invoice__user=user_for_context(context),
    )
    ret = notes.values("amount").aggregate(Sum("amount"))["amount__sum"] or 0
    return 0 - ret
def available_credit(context):
    ''' Calculates the sum of unclaimed credit from this user's credit notes.

    Returns:
        Decimal: the sum of the values of unclaimed credit notes for the
            current user.

    '''

    notes = commerce.CreditNote.unclaimed().filter(
        invoice__user=user_for_context(context),
    )
    ret = notes.values("amount").aggregate(Sum("amount"))["amount__sum"] or 0
    return 0 - ret
def available_credit ( context ) : notes = commerce . CreditNote . unclaimed ( ) . filter ( invoice__user = user_for_context ( context ) , ) ret = notes . values ( "amount" ) . aggregate ( Sum ( "amount" ) ) [ "amount__sum" ] or 0 return 0 - ret
Calculates the sum of unclaimed credit from this user's credit notes.

    Returns:
        Decimal: the sum of the values of unclaimed credit notes for the
            current user.
Calculates the sum of unclaimed credit from this user s credit notes .