CODEWITHSUNDEEP
pythonscope
user4493177
user4493177

Reputation: 790

UnboundLocalError: local variable .. referenced before assignment

I am starting with python. I am trying a very simple class-structure, but i get an error.

This is my script:

class controller:

    def initLocal(self):
        path = input('path:')
        local = local()
        local.path = path
        return local


class location:
    pass



class local(location):
    path = None



controller = controller()
local = controller.initLocal()

And this is the result i get in the console:

path:a
Traceback (most recent call last):
  File "path\to\test.py", line 21, in <module>
    local = controller.initLocal();    
  File "path\to\test.py", line 5, in initLocal
    local = local();
UnboundLocalError: local variable 'local' referenced before assignment

I searched for this error, and found it usually has to do something with uncorrect scopes. I however do not see what i am doing wrong here. Is it 'illegal' to have a class instance with the same name as the class?

If i change the initLocal() method to this:

def initLocal(self):
    path = input('path:')
    locale = local()
    locale.path = path
    return locale

It works, but i cannot find out why, since controller = controller() does not cause any problems.

Can somebody tell me what i am doing wrong? I have the feeling it might be something really obvious, but i cannot figure out what it is.

Upvotes: 1

Views: 7452

Answers (1)

omri_saadon
omri_saadon

Reputation: 10621

class Location:
    pass

class Local(location):
    path = None

class Controller:
    def initLocal(self):
        path = raw_input('path:')
        local = Local()
        local.path = path
        return local

controller = Controller()
local = controller.initLocal()

Upvotes: 1

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