property-decorator python

property_decorator.py

class Storage:
    """ 
    MaxLimit of storage is 100
    """
    def __init__(self, maxlimit=0):
        self.limit = 100
        self.maxlimit = maxlimit
    
    @property    
    def maxlimit(self):
        """ Getting maxlimit value
        Returns:
            int: Maxlimit of storage
        """
        return self._maxlimit
    
    @maxlimit.setter
    def maxlimit(self, value): 
        """Setting Value
        Args:
            value ([int]): [New storage]
        Raises:
            Exception: [Storage limit Exceded]
        """
        if value > self.limit:
            raise Exception(f"Storage limit exceded. Box Max Limit => {self.limit}")
        else:
            self._maxlimit = value

box = Storage(45)
print(f"Box Limit => {box.maxlimit}")

box.maxlimit = 200
print(f"Box Limit => {box.maxlimit}")


# Output
🏆  ››› python3 property_decorator.py
Box Max Limit => 100
Box Limit => 45
Traceback (most recent call last):
  File "medium.py", line 29, in <module>
    box.maxlimit = 200
  File "medium.py", line 22, in maxlimit
    raise Exception(f"Storage limit exceded. Box Max Limit => {self.limit}")
Exception: Storage limit exceded. Box Max Limit => 100
FAIL: 1