PYTHON

if object has property python

Use hasattr()

hasattr(object, name)
#The arguments are an object and a string.
#The result is True if the string is the name of one of the
#object’s attributes, False if not.
#(This is implemented by calling getattr(object, name) and
#seeing whether it raises an AttributeError or not.)

Docs: https://docs.python.org/3/library/functions.html#hasattr

python3 check if object has attribute

try:
    doStuff(a.property)
except AttributeError:
    otherStuff()

check if an object has an attribute in Python

if hasattr(a, 'property'):
    doStuff(a.property)
else:
    otherStuff()

check if an object has an attribute in Python

assert hasattr(a, 'property'), 'object lacks property' 
print(a.property)

check if an object has an attribute in Python

getattr(a, 'property', 'default value')