PYTHON

python check if has attribute

if hasattr(a, 'property'):
    a.property

Check instance has an attribute in python

if hasattr(a, 'property'):
    a.property

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')

Check instance has an attribute in python

if hasattr(a, 'property'):
    a.property