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Calling a base class's classmethod in Python
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If you're using a new-style class (i.e. derives from object in Python 2, or always in Python 3), you can do it with super() like this:
super(Derived, cls).do(a)
This is how you would invoke the code in the base class's version of the method (i.e. print cls, a), from the...
How to overlay images
... Tim K.: your code looks fine, except for the CSS. The engine reads CSS from right to left. When you use 'a.gallerypic' it's looks first for 'gallerypic' and then it checks if 'gallerypic' has a 'a' ancestor. To solve this, simple leave the 'a' out, so you get '.gallerypic'. No need for the prece...
YouTube API to fetch all videos on a channel
...requests yourself. Here is an example URL that retrieves the latest videos from a channel:
https://www.googleapis.com/youtube/v3/search?key={your_key_here}&channelId={channel_id_here}&part=snippet,id&order=date&maxResults=20
After that you will receive a JSON with video ids and de...
Convert string to Python class object?
...cation of using eval. You better make sure the string you passed in is not from user.
– Overclocked
Jul 18 '13 at 13:32
18
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APT command line interface-like yes/no input?
...t() (or simply input() for Python 3). There is no built-in way to do this. From Recipe 577058:
import sys
def query_yes_no(question, default="yes"):
"""Ask a yes/no question via raw_input() and return their answer.
"question" is a string that is presented to the user.
"default" is the...
What is the concept of erasure in generics in Java?
...ns that the type information which is present in the source code is erased from the compiled bytecode. Let us understand this with some code.
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class GenericsErasure {
public static void main(String args[]) {
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LaTeX: Prevent line break in a span of text
How can I prevent LaTeX from inserting linebreaks in my \texttt{...} or \url{...} text regions? There's no spaces inside I can replace with ~ , it's just breaking on symbols.
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Where to put include statements, header or source?
...l H file. The internal H file includes the external H file.
You see that from the compilers POV, as it compiles a C file, there is a hierarchy;
external -> internal -> C code
This is the correct ordering, since that which is external is everything a third party needs to use the library. T...
How do I cast a JSON object to a typescript class
I read a JSON object from a remote REST server. This JSON object has all the properties of a typescript class (by design). How do I cast that received JSON object to a type var?
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Double Iteration in List Comprehension
...wers, let me also point out the excellent itertools.chain():
>>> from itertools import chain
>>> list(chain.from_iterable(a))
>>> list(chain(*a)) # If you're using python < 2.6
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