parameters: (self)
docstring: Calculates Sub total
docstring_summary: Calculates Sub total
docstring_tokens: Calculates Sub total
function: def _sub_total(self):
          """ Calculates Sub total"""
          for cashbox_line in self:
              cashbox_line.subtotal = cashbox_line.coin_value * cashbox_line.number
function_tokens: def _sub_total ( self ) : for cashbox_line in self : cashbox_line . subtotal = cashbox_line . coin_value * cashbox_line . number