from decimal import Decimal


class Fees(object):

 def __init__(self):
 """Constructor"""
 self._fee = None

 def get_fee(self):
 """
 Return the current fee
 """
 return self._fee

 def set_fee(self, value):
 """
 Set the fee
 """
 if isinstance(value, str):
 self._fee = Decimal(value)
 elif isinstance(value, Decimal):
 self._fee = value

 fee = property(get_fee, set_fee)


class NewFees(object):

 def __init__(self, fee):
 """Constructor"""
 self._fee = fee

 @property
 def fee(self):
 """
 The fee property - the getter
 """
 return self._fee

 @fee.setter
 def fee(self, value):
 """
 The setter of the fee property
 """
 if isinstance(value, str):
 self._fee = Decimal(value)
 elif isinstance(value, Decimal):
 self._fee = value


if __name__ == '__main__':
 f = NewFees('1')
 print(f.fee)
 f.fee = '2'
 print(f.fee)