Top-rated recipes tagged "meta:loc=21"

Get the path of the currently executing python script using import. (Python)

2006-02-24T05:23:36-08:00

Python recipe 474083 by Jitender Cheema (sysadmin).

1. sys.arg has the script name

2. Although there can be many ways, e.g. os.cwd() but, there is another

trick to

obtain the Complete URI or Location of the current script.

You can argue, os.getcwd()

import can give you working directory of the current script

Third party Java code calling your script.... ;)

XML Directory Tree (Python)

2004-09-28T19:12:23-07:00

Python recipe 305313 by Raymond Hettinger (programs). Revision 4.

Builds a directory tree in XML format. Demonstrates how to use xml.dom.minidom to rapidly construct nested XML with multiple element types and attributes. Serves as a model for building model complex documents.

various Windows Script Host (WSH) examples converted to Python (Python)

2001-06-08T10:49:34-07:00

Python recipe 65108 by Kevin Altis .

various Windows Script Host (WSH) examples converted to Python. The originals are at: http://msdn.microsoft.com/scripting/default.htm?/scripting/windowshost/doc/wsMthRun.htm http://msdn.microsoft.com/scripting/windowshost/doc/wsproenvironment.htm http://msdn.microsoft.com/scripting/default.htm?/scripting/windowshost/doc/wsMthSendKeys.htm

Note that this script is a Python program that utilizes WSH, so use a .py extension rather than .pys.

ctypes CDLL with automatic errno checking (Python)

2017-01-03T10:31:26-08:00

Python recipe 580741 by Oren Tirosh .

This class extends ctypes.CDLL with automatic checking of errno and automatically raises an exception when set by the function.

Frame with border color for Tkinter (Python)

2017-04-17T11:25:02-07:00

Python recipe 580735 by Miguel Martínez López (border, color, frame, tkinter).

This trick show how to add a border color to frame. These are the important configurations:

 highlightbackground="your border color here"
 highlightcolor="your border color here"
 highlightthickness="the border width"
 bd= 0

subprocess.terminate() not always implemented (Python)

2009-02-25T10:45:01-08:00

Python recipe 576667 by Gui R (process_management, subprocess, terminate). Revision 2.

The new subprocess module brings clarity and simplicity over the popenXX() functions and os.spawnXX() functions, but some implementations don't have the subprocess.terminate() method, which is crucial for killing a spawned process. This workaround works on both POSIX and Windows.

String representation of a dict (sorted by key) (Python)

2008-06-16T13:37:45-07:00

Python recipe 573453 by Jacob Oscarson .

I quite often find a need to create a 'key-value' pair representation of a dictionary as a string, mainly using generators and the .join method of string objects

Storing binary data in SQLite (Python)

2003-12-13T20:37:16-08:00

Python recipe 252531 by John Barham (database).

This script demonstrates how to store binary data (aka BLOB or BINARY fields) in SQLite using the PySQLite extension.

Prototype pattern (Python)

2001-11-03T06:51:26-08:00

Python recipe 86651 by Andres Tuells (oop).

This is an implementation of the prototype pattern. In the prototype pattern you create a new instance cloning from other.

Just For Fun: Quicksort in 3 Lines (Python)

2001-08-07T20:58:18-07:00

Python recipe 66473 by Nathan Gray (search). Revision 4.

OK, 4 lines if you count wrapped lines. :^) This is a rather naive implementation of quicksort that illustrates the expressive power of list comprehensions. DO NOT USE THIS IN REAL CODE!

NOTE: Due to an annoyance in the ASPN submission filters you must manually remove the space after the '\' character in the third line if you intend to use the code. Otherwise you will get a syntax error.

Looping through multiple lists (Python)

2001-06-29T16:53:42-07:00

Python recipe 65285 by andy mckay (shortcuts). Revision 2.

Often you need to loop through every item of multiple lists and compare them. This can be done without a using a counter.

A minimal debugger (Tcl)

2001-06-21T16:47:46-07:00

Tcl recipe 65431 by Jeff Hobbs (debugging).

Of course, Tcl's most minimal debugger is puts. But here is a cute little piece of code that offers some more debugging functionality (if you have stdin and stdout available - so not for wish on Windows)

Using ctypes to call C code from Python (Python)

2016-05-09T18:00:44-07:00

Python recipe 580660 by Vasudev Ram (ctypes, ffi, python, time).

This recipe shows basic usage of the ctypes module to call C code from Python code.

Recursively dumping the structure of an HTML5 document (Python)

2015-02-09T20:09:30-08:00

Python recipe 579022 by Vasudev Ram .

This recipe shows how to dump the structure of an HTML5 document, using the html5lib Python library with recursion.

Numbers as Ranges - iterable integers (C++)

2014-10-02T12:13:52-07:00

C++ recipe 578945 by elazar (iterable, range). Revision 2.

This header file makes simple integers iterable. Note that it works only on C++11 or above.

Usage:

#include "num_range.h"
for (int i : 3) cout << i << endl;

Output: 0 1 2

Implementation note: This code is far too generic. We only need DerefableInt. The templates are there for no practical reason.

Cons: pollutes namespace std; nonstandard idiom;

Prime Factorization (Python)

2014-09-19T08:11:54-07:00

Python recipe 578938 by juan .

Calculates the prime factorization from a number.

Dice (Python)

2014-06-12T22:03:16-07:00

Python recipe 578890 by Drew Stanly Koluk (dice). Revision 2.

this is a small program i wrote. it has 2 dice that go from 1 to 12 if you would like another program with only 1 die or the dice only go from 1 to 6 anything like that feel free to email me or just change it yourself(if u can)

email:shogundrew@hotmail.com

Wrap a string in a file-like object that calls a user callback whenever read() is called on the stream (Python)

2013-09-22T21:48:03-07:00

Python recipe 578669 by Ben Hoyt (callback, file, progress, upload).

Wraps a string in a read-only file-like object, but also calls a user callback with the number of bytes read whenever read() is called on the stream. Used for tracking upload progress, for example for a progress bar in a UI application.

Shuffle (Python)

2013-02-19T11:01:01-08:00

Python recipe 578466 by Narayana Chikkam (shuffle).

Python function to shuffle a deck of cards

Creating array into batch (Batch)

2012-11-01T18:35:05-07:00

Batch recipe 578314 by greg zakharov (array). Revision 2.

Command language supports creation array. For example: