How do I check if a variable exists?

Question

I want to check if a variable exists. Now I\'m doing something like this:

try:
   myVar
except NameError:
   # Do something.

Are there othe

Answer 1

for objects/modules, you can also

'var' in dir(obj)

For example,

>>> class Something(object):
...     pass
...
>>> c = Something()
>>> c.a = 1
>>> 'a' in dir(c)
True
>>> 'b' in dir(c)
False