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What are some (concrete) use-cases for metaclasses?
...ling to actually change these values. Maybe David Beazley can.
Anyway, in Python 3, metaclasses also have the __prepare__ method, which lets you evaluate the class body into a mapping other than a dict, thus supporting ordered attributes, overloaded attributes, and other wicked cool stuff:
import ...
How can I include a YAML file inside another?
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Your question does not ask for a Python solution, but here is one using PyYAML.
PyYAML allows you to attach custom constructors (such as !include) to the YAML loader. I've included a root directory that can be set so that this solution supports relative and...
Chrome can't load web worker
...e a more general solution for it. Instead of installing wamp or xamp, with python you can navigate to the folder your project is hosted in and type: python -m http.server
Just that and you will have a running server on that folder, reachable from localhost.
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Reading an Excel file in python using pandas
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Here is an updated method with syntax that is more common in python code. It also prevents you from opening the same file multiple times.
import pandas as pd
sheet1, sheet2 = None, None
with pd.ExcelFile("PATH\FileName.xlsx") as reader:
sheet1 = pd.read_excel(reader, sheet_name='...
Python - abs vs fabs
I noticed that in python there are two similar looking methods for finding the absolute value of a number:
4 Answers
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Peak-finding algorithm for Python/SciPy
... that only works on those particular images. I adapted a MATLAB script to Python and it works decently.
– endolith
Dec 17 '09 at 18:30
1
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JSON and XML comparison [closed]
...d Feb 1 '11 at 12:26
Gergely FehérváriGergely Fehérvári
7,20566 gold badges4242 silver badges7171 bronze badges
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Append integer to beginning of list in Python [duplicate]
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It would be nice for python to add a list.push_front(item) function. This will be obvious and less error-prone.
– Kemin Zhou
Sep 18 '16 at 3:21
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How to convert an array of strings to an array of floats in numpy?
...(float, list_of_strings)) (or equivalently, use a list comprehension). (In Python 3, you'll need to call list on the map return value if you use map, since map returns an iterator now.)
However, if it's already a numpy array of strings, there's a better way. Use astype().
import numpy as np
x = n...
How to make a class JSON serializable
How to make a Python class serializable?
33 Answers
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