AttributeError: 'top_block_sptr' object has no attribute 'change_param_1'

[Hadad]

could be the indenting on lines 43 and 44

Thats how the problem started. I got many notifications about the indenting of these lines and tried different ways and none of them worked. I just ended up having them there as they are now! Thanks for the observation though!


Update:

Well, thanks for bringing that to my attention again. It works like charm now. I re-wrote it like this and it worked:

    def getfile(self, filename):


    	with open(filename, 'wb') as configfile:
    		config.write(configfile)

Something that I wasn't aware of: I am not sure of the following but it helped correct the indenting issue of the def change_param_1 too, which is the unseen spaces!!! I noticed that I had many spaces between lines, once I deleted these spaces I got no more indenting notifications!