As the documentation states [docs], In user defined base classes, abstract methods should raise this exception when they require derived classes to override the method, or while the class is being developed to indicate that the real implementation still needs to be added. Note that although the main stated use case this error is the indication … Read more
Why not just do this: Python is dynamic, so you don’t need to declare things; they exist automatically in the first scope where they’re assigned. So, all you need is a regular old assignment statement as above. This is nice, because you’ll never end up with an uninitialized variable. But be careful — this doesn’t … Read more
On Fedora 25 Python 3.6 comes as a minimalistic version without pip and without additional dnf installable modules. But you can manually install pip: After that you can use it as python3.6 -m pip or just pip3.6.
Just add: in the beginning, before: This will import the python’s module os, which apparently is used later in the code of your module without being imported.
You cannot mix tabs and spaces, according the PEP8 styleguide: Spaces are the preferred indentation method. Tabs should be used solely to remain consistent with code that is already indented with tabs. Python 3 disallows mixing the use of tabs and spaces for indentation. Python 2 code indented with a mixture of tabs and spaces should … Read more
Why the loop? You could simply do this: When you were originally doing your string comparison, you should have used == instead.
There is no str accessor for datetimes and you can’t do dates.astype(str) either, you can call apply and use datetime.strftime: You can change the format of your date strings using whatever you like: strftime() and strptime() Behavior. Update As of version 0.17.0 you can do this using dt.strftime will now work
It’s an indicator to the format method that you want it to be replaced by the first (index zero) parameter of format. (eg “2 + 2 = {0}”.format(4))
Something like this – for each line read into string variable a: Now you can do what is necessary with x and y as assigned, which are integers.
With the excellent matplotlib and numpy packages will produce something like