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surface plots in matplotlib
...ct, interactive, fixed, interact_manual
import ipywidgets as widgets
from IPython.display import Image
from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
import numpy as np
from mpl_toolkits import mplot3d
def f(x, y):
return np.sin(np.sqrt(x ** 2 + y ** 2))
def plot(i):
...
Parsing command-line arguments in C?
...ptions, docopt infers and creates an argument parser. This got started in python; the python version literally just parses the docstring and returns a dict. To do this in C takes a little more work, but it's clean to use and has no external dependencies.
...
How to UPSERT (MERGE, INSERT … ON DUPLICATE UPDATE) in PostgreSQL?
...
Python and SQLAlchemy are not mentioned in the question.
– Alexander Emelianov
Nov 1 '17 at 12:04
...
PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
...ame it back
Restore the dump
The magic is done.
I've written two rows in Python to do that; I hope they can help someone (in-2-seconds-written-code, don’t use it in production):
import os
import sys
import pg
# Take the new schema name from the second cmd arguments (the first is the filename)
...
Verify a certificate chain using openssl verify
...ed for Intermediate.pem if it is possible that the following happens: mail.python.org/pipermail/cryptography-dev/2016-August/…
– Greg Smethells
Mar 17 '17 at 20:34
2
...
Wrap a delegate in an IEqualityComparer
...ot the comparison itself.
This could be an elegant solution (concept from Python's list sort method).
Usage:
var foo = new List<string> { "abc", "de", "DE" };
// case-insensitive distinct
var distinct = foo.Distinct(new KeyEqualityComparer<string>( x => x.ToLower() ) );
The KeyE...
Is it necessary to write HEAD, BODY and HTML tags?
...rt it), as defined in ISO 8879. Nearly all HTML parsers support it, though Python's 'html.parse' appears not to (see stackoverflow.com/questions/29954170/…).
– TextGeek
Apr 21 '18 at 16:43
...
How to use Sphinx's autodoc to document a class's __init__(self) method?
...en several variants of autodoc-skip-member callbacks for various unrelated Python projects because I wanted methods like __init__(), __enter__() and __exit__() to show up in my API documentation (after all, these "special methods" are part of the API and what better place to document them than insid...
Convert Django Model object to dict with all of the fields intact
...Round: better model printing
If you want a django model that has a better python command-line display, have your models child-class the following:
from django.db import models
from itertools import chain
class PrintableModel(models.Model):
def __repr__(self):
return str(self.to_dict()...
What is the difference between Raising Exceptions vs Throwing Exceptions in Ruby?
...the throw/catch construct you're familiar with from other languages (or to Python's raise/except). If you've encountered an error condition and you would throw over it in another language, you should raise in Ruby.
Ruby's throw/catch lets you break execution and climb up the stack looking for a catc...