Need help in python scripting

[DeaD_EyE]

Then catch two exceptions:

try:
    # code
except (KeyError, TypeError):
    # code to handle the exception

The TypeError came, because test or aa returns None.
You expect that the value is also a dict. But it seems, that sometimes there is a None.

example_dict = {
    'dict': {
        'subdict': {
            'subsubdict': {
                'value': 42,
            }
        }
    }
}


print(example_dict['dict']['subdict']['subsubdict']['value'])

# now replacing the value of subdict with None.
example_dict['dict']['subdict']['subsubdict'] = None


# TypeError
print(example_dict['dict']['subdict']['subsubdict']['value'])

Error:
---------------------------------------------------------------------------      
TypeError                                 Traceback (most recent call last)      
<ipython-input-4-0a16fb6ffb69> in <module>                                       
----> 1 print(example_dict['dict']['subdict']['subsubdict']['value'])            
                                                                                 
TypeError: 'NoneType' object is not subscriptable