Re: how can i know if a python object have a attribute such as 'attr1'?

[Terry Reedy]

On 1/23/2010 10:56 AM, Arnaud Delobelle wrote:

thinke365<thinke...@gmail.com>  writes:

for example, i may define a python class:
class A:
      def sayHello():
           print 'hello'

a = A()
a.attr1 = 'hello'
a.attr2 = 'bb'

b = A()
a.attr2 = 'aa'

how can i know whether an object have an attribute named attr1?

hasattr(a, 'attr1')

or
try: a.attr1
except AttributeError: pass

Terry Jan Reedy




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