Exception AttributeError: "'NoneType' object has no attribute 'population'" in <bound method Person.__del__ of <__main__.Person instance at 0x01AF97D8 >> ...
17.08.2015 · Sometimes I'm able to read all the packets from a given file with no problems. But every 3rd or 4th time I run my program with the same input file I get this error: 'NoneType' object has no attribute 'add_reader'. Using traceback I consistently get …
Add a Grepper Answer. Python answers related to “AttributeError: 'NoneType' object has no attribute” ... Install TensorFlow via `pip install tensorflow ...
07.11.2013 · this will return None and you are assigning it to not_yet_bought_set. So, not_yet_bought_set becomes None now. The next time. not_yet_bought_set = not_yet_bought_set.add (item) is executed, add will be invoked on None. Thats why it fails. To fix this, simply do this. Dont assign this to anything.
AttributeError: 'NoneType' object has no attribute 'add'. while I tried this. not_yet_bought_set = set() . . . for value in set_dict.itervalues(): for item ...
3 Answers3. Show activity on this post. So basically, what this is saying, in Python speak, is that your attempt to open the shapefile failed. When something like osgeo.ogr.Open () fails, it usually returns None, which, in your case, gets assigned to your variable "shapefile". When you try to then access shapefile later, it tells you that ...
The reference attribute is made with an attribute that is not available in a class that throws the attribute error in python. The attribute is called in a ...
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AttributeError: 'Workbook' object has no attribute 'add_format' I have updated xlsxwriter and looked at a lot of questions on SO and documentation but nothing has worked yet. This is my code:
Nov 08, 2013 · not_yet_bought_set.add(item) this will return None and you are assigning it to not_yet_bought_set. So, not_yet_bought_set becomes None now. The next time. not_yet_bought_set = not_yet_bought_set.add(item) is executed, add will be invoked on None. Thats why it fails. To fix this, simply do this. Dont assign this to anything. not_yet_bought_set.add(item)