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Don Smythe
Don Smythe

Reputation: 9804

Accessing an Enum in Python

How can I access an enum from another class - eg for class B as below:

from examples import A

class B:
    properties = A

    def __init__(self, name, area, properties):
        self.name = name
        self.area = area
        self.properties = properties

B.property = B("test", 142.43, A)
print ("B color: "+B.properties.color)
print ("A color: "+str(A.color._value_))

#in separate module
from enum import Enum

class A(Enum):
    color = "Red"
    opacity = 0.5

print("A color: "+str(A.color._value_))

When I run class A :

A color: Red

When I run class B:

    print ("B color: "+B.properties.color)
AttributeError: 'module' object has no attribute 'color'

Upvotes: 1

Views: 937

Answers (1)

Martijn Pieters
Martijn Pieters

Reputation: 1121196

A is the module containing your class, not the class itself. You'd have to reference the class in the module still:

from examples.A import A

or use

properties = A.A

and

print ("A color: "+str(A.A.color._value_))

Try to avoid using uppercase names for modules; the Python style guide (PEP 8) recommends you use all lowercase for module names. That way you won't so easily mix up modules and the classes contained in them.

Upvotes: 4

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