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Label encoding across multiple columns in scikit-learn
...For inverse_transform and transform, you have to do a little bit of hack.
from collections import defaultdict
d = defaultdict(LabelEncoder)
With this, you now retain all columns LabelEncoder as dictionary.
# Encoding the variable
fit = df.apply(lambda x: d[x.name].fit_transform(x))
# Inverse th...
One DbContext per web request… why?
...hat case the business logic takes ownership of an object it gets passed on from the outside. The second option is to Dispose all created instances on the boundary of the Http Request, but in that case you still need some sort of scoping to let the container know when those instances need to be Dispo...
Code signing certificate for open-source projects?
...o longer free - the reference to open source code signing has been removed from the test certificates page, and there is now a separate product page en.sklep.unizeto.pl/data-safety/code-signing-certificates/…. At €14 they're much cheaper than other certificates though. The signup process seems t...
What exactly do the Vagrant commands do?
...tion at vagrantup is on the shorter side.
Some information can be gleaned from command help system.
For example: gem command.
Just type the command without arguments: vagrant gem -h and it produces the information that you may need.
vagrant gem is used to install Vagrant plugins via the Ruby...
How do I change the working directory in Python?
... works, yet I still use fully-qualified paths in any script I might invoke from Python because there is no guarantee that this will apply outside of the Python program itself.
– SDsolar
Aug 2 '17 at 3:43
...
Convert Unicode to ASCII without errors in Python
...s again and decoded to normally readable text in the end.
Original Answer from 2010:
Can we get the actual value used for link?
In addition, we usually encounter this problem here when we are trying to .encode() an already encoded byte string. So you might try to decode it first as in
html = url...
What is the python “with” statement designed for?
...lso construct your own context managers using the contextmanager decorator from contextlib. For instance, I often use this when I have to change the current directory temporarily and then return to where I was:
from contextlib import contextmanager
import os
@contextmanager
def working_directory(p...
Best way to structure a tkinter application? [closed]
...ually create the main window until the very last step. I prefer inheriting from tk.Frame just because I typically start by creating a frame, but it is by no means necessary.
If your app has additional toplevel windows, I recommend making each of those a separate class, inheriting from tk.Toplevel...
How do I run a Python script from C#?
...
Execute Python script from C
Create a C# project and write the following code.
using System;
using System.Diagnostics;
using System.IO;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public par...
Logout: GET or POST?
...ures, a logout that then asks me if I'm sure. Guess it keeps the prefetch from logging you out, but Amazon, Ebay, and Gmail all use GET for logout without that trick page in between what the user is told is logout and the actual logout event. I would imagine that in between page would lead to a lo...