As of pandas 2.0, append (previously deprecated) was removed. You need to use concat instead (for most applications): df = pd.concat([df, pd.DataFrame([new_row])], ignore_index=True) As noted by @cottontail, it’s also possible to use loc, although this only works if the new index is not already present in the DataFrame (typically, this will be the case if … Read more
Summary The method in question returns the special value None, which is the unique instance of the NoneType type. It updates the object as a side effect, and does not return that object. Since x.y() returns None, x = x.y() causes x to become None, and x.y().z() fails because None does not have the specified … Read more
The problem is that for json.load you should pass a file like object with a read function defined. So either you use json.load(response) or json.loads(response.read()).
I believe your problem is similar to that in AttributeError: ‘DiGraph’ object has no attribute ‘_node’ The issue there is that the graph being investigated was created in networkx 1.x and then pickled. The graph then has the attributes that a networkx 1.x object has. I believe this happened for you as well. You’ve now … Read more
Overview In general, there are two kinds of queries offered by BeautifulSoup: ones that look for a single specific element (tag, attribute, text etc.), and those which look for each element that meets the requirements. For the latter group – the ones like .find_all that can give multiple results – the return value will be … Read more
Your __del__ method assumes that the class is still present by the time it is called. This assumption is incorrect. Groupclass has already been cleared when your Python program exits and is now set to None. Test if the global reference to the class still exists first: def __del__(self): if Groupclass: Groupclass.count -= 1 or … Read more
Your trouble is that you have some code that is expecting datetime to be a reference to the datetime module and other code that is expecting datetime to be a reference to the datetime class. Obviously, it can’t be both. When you do: from datetime import datetime import datetime You are first setting datetime to … Read more
You need two underscores before and after the init function: __init__. _init_ has no special meaning and isn’t being called when your object is constructed.
widget is stored as None because geometry manager methods grid, pack, place return None, and thus they should be called on a separate line than the line that creates an instance of the widget as in: widget = … widget.grid(..) or: widget = … widget.pack(..) or: widget = … widget.place(..) And for the 2nd code … Read more
I suspect the place where you copied the code from had eager execution enabled, i.e. had invoked tf.enable_eager_execution() at the start of the program. You could do the same. UPDATE: Note that eager execution is enabled by default in TensorFlow 2.0. So the answer above applies only to TensorFlow 1.x