constant-properties-protector 0.1.1

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Constant Properties Protector Package

With the help of this module, you can protect some of properties in a class. Protecting means avoiding to change them but keep them publicly available.

from constant_properties_protector import CPP

class A(CPP):
    def __init__(self):
        CPP.__init__(self, protecteds=[
            'initialized_protected',
            'uninitialized_protected'
        ])
        self._initialized_protected = 12
        
a = A()
print(a.initialized_protected)
# >>> 12
a.t = 2
print(a.t)
# >>> 2
a.initialized_protected += 1
# Exception: Can not modify constant property: initialized_protected
a.uninitialized_protected = 10
# Exception: Can not modify constant property: uninitialized_protected

class B(A):
    def __init__(self):
        super().__init__()
        self.protect_properties([
            'new_protected_value'
        ])
        self._new_protected_value = 26

b = B()
print(b.new_protected_value)
# >>> 26
b.new_protected_value += 2
# Exception: Can not modify constant property: new_protected_value

NOTE:

• You can use CPP along with other base classes.
• CPP will override __getattribute__ and __setattr__. So where these functions somehow are overrided or are going to be overridden, don't use it .
• Use _ first of the protected property name to get fully access to it.
• Use protect_properties function to add to protected properties. If you use inheritance, NEVER inherit from CPP more than once. Use this function instead.

Installation

pip install constant-properties-protector