Treat error ?

[buran]

class Foo:
    def spam(self):
        pass

    
try:
    check = hasattr(Foo, 'eggs')
except AttributeError:
    check = False

print(check)
print(hasattr(Foo, 'spam'))

I was misled by your AttributeError...

you don't need try/except

class Foo:
    def spam(self):
        pass

check = hasattr(Foo, 'eggs')
print(check)
check = hasattr(Foo, 'spam')
print(check)

As a side note about using try/except - try should be before the line that may raise error, not after that.

try:
    print(1/0)
except ZeroDivisionError:
    print('Cannot divide by 0')