Popular Python recipes tagged "python3"

Lines Of Code (LOC) (Python)

2016-10-25T17:53:01-07:00

Python recipe 580709 by Jean Brouwers (count, lines, python2, python3, source). Revision 3.

Count the number of lines (code, comment, blank) in one or several Python source files.

Give Python code a web plus command-line interface with hug (Python)

2017-01-05T16:57:15-08:00

Python recipe 580742 by Vasudev Ram (cli, commandline, hug, library, python, python3, user_interface, web, web_server).

This recipe shows how to take a Python function and wrap it with both a web and a command-line interface, somewhat easily, using the hug Python library. The example used shows how to wrap a function that uses the psutil library to get information on disk partitions. So you can see the disk partition info either via the web browser or the command line. The code for the recipe is shown below. It is also possible to wrap multiple functions in the same Python file, and expose all of them via both the web and the command-line.

More information and multiple sample outputs are available here:

https://jugad2.blogspot.in/2017/01/give-your-python-function-webcli-hug.html

PyOOCalc - Python Libre/Open Office Calc Interface API (UNO) (Python)

2016-01-10T13:12:53-08:00

Python recipe 579147 by Yurii (openoffice, python, python3).

Create Libre/Open Office Calc documents, reports on Python

LRU dictionary (Python)

2016-04-17T01:22:01-07:00

Python recipe 580644 by Felix (dict, dictionary, expiration, expiring, lru, lru_cache, python3).

For most cases where you want to store a limited amount of data, functools.partial is sufficient. However, if you want or need more control over your data, especially specifying an expiration date for your entries, this can come in handy.

Read the docstrings for implementation details.

LRU dictionary (Python)

2016-04-17T01:22:51-07:00

Python recipe 580645 by Felix (dict, dictionary, expires, expiring, lru, lru_cache, python, python3).

Read the docstrings for implementation details.

[python3-tk/ttk] Onager Scratchpad (Python)

2016-04-24T02:34:03-07:00

Python recipe 580650 by Mickey Kocic (python3, text_processing, tkinter, ttk, windows). Revision 2.

I wrote this simple text editor to use for my diary. It's customized the way I like it, but the code is set up so it's easy for other people to change bg, fg, font, etc. I've also compiled a standalone Windows executable (thank you very much ActiveState! without ActivePython the compilation would have been impossible). Anyone who wants a copy of the executable is free to message or email me.

NOTE: If you get an error that the theme is not recognized, just comment out line 18 or run the following code in your python3 interpreter:

>>>from tkinter.ttk import Style
>>>s = Style()
>>>s.theme_use()

You'll get a list of the available themes and can replace the 'alt' in line 18 with any one of them you want.

generates a set of binary files by doing ASCII replacements on a master binary file, controlled by a csv file (Python)

2015-09-16T16:25:49-07:00

Python recipe 579099 by Antoni Gual (ascii, files, python3, replace).

A hack that saved me a lot of time. Well perhaps not so much, but it was funnier than to do it manually.

Decorator for defining functions with keyword-only arguments (Python)

2015-07-10T15:25:04-07:00

Python recipe 579079 by Oscar Byrne (arguments, decorator, decorators, keyword, metadecorator, positional, python2, python3). Revision 2.

Python2.x implementation of python3's keyword-only arguments (aka arguments that must be specified as keywords, and are not automatically filled in by positional arguments - see PEP 3102).

Hashing Nonhashable / Mutable Objects (Python)

2015-04-16T12:11:34-07:00

Python recipe 579047 by Max Moroz (hash, python, python3). Revision 2.

This class is intended as a wrapper for non-hashable objects (such as lists, dictionaries, etc.) in situations where the object is known to be immutable. Example: memoization of function arguments.

Feedback much appreciated, I will update to reflect any comments.

Game of Life - Python 3.4 & tkinter (Python)

2014-09-05T15:02:11-07:00

Python recipe 578928 by Peter M (python3, tkinter).

I took this well-know game to design my own solution, and make a GUI for it.

To run the program, you will need to create a txt file with rows of dots, so like this:

...... ...... ...... ......

and name it empty_board.gol (I have tested this program withwith 55x55)

It is functional and not object oriented.

My game of life algorithm is probably not the best one around (suggestions welcome), but I think this program is a nice demo of with tkinter can do and how easy it is to program GUI's with tkinter.

It has been written and tested in python 3.4 but I guess any version 3 should work, and probably only minor changes are needed to make it work in 2.6 or 2.7 (e.g. change tkinter to Tkinter).

All in one Area Calculator (Python)

2014-07-03T09:16:14-07:00

Python recipe 578901 by karim (calculator, circlearea, gui, python3, tkinter, tranglearea, trianglearea). Revision 2.

Its a python 3 based All in one Area Calculator.you can calculate Area of Rectangle,Area of Triangle and Area of Circle

Droids ( a text adventure ) (Python)

2013-07-27T09:44:06-07:00

Python recipe 578618 by jay (beginner, commandline, game, python3, text).

for beginners.

Droids 2 ( IF ) (Python)

2013-08-13T09:12:11-07:00

Python recipe 578636 by jay (beginner, commandline, game, if, learning, python3, text). Revision 2.

-For learner's and beginner's like myself -

-and for anyone who may have enjoyed Droids. -

2 very basic text games. (Python)

2013-07-09T03:08:47-07:00

Python recipe 578596 by jay (beginner, commandline, fun, python3).

my versions of two games found in Al Sweigart's book "invent with python"

Type checking using Python 3.x annotations (Python)

2013-05-23T22:46:19-07:00

Python recipe 578528 by David Mertz (annotations, check, decorator, python3, type, typecheck). Revision 5.

Some other recipes have been suggested to allow type checking by various means. Some of these require the use of type specification in a decorator itself. Others try to be much more elaborate in processing a large variety of annotations (but hence require much more and more convoluted code).

The recipe provided below is very short, and simply provides actual type checking of arguments and return values. It utilizes an unadorned decorator, rather than manufacture one that is parameterized by types or other arguments.

easy user input (Python)

2013-09-13T06:34:08-07:00

Python recipe 578552 by yota (input, python3, query, user). Revision 7.

Improvement over Recipe 577058 and cie.

easy_input() function extends the built-in input() function. A question is prompted as well as some expected answers.

The user input can be incomplete (ie. y or ye instead of yes)

If no list of expected answer is provided, default will be "yes/no".
If no default answer is provided, default will be the first expected answer.

Try and see.

Disclaimer: written in python3, meant for *nix shell, indented with tabs

Avoided caveat: If some expected answer have the same beginning, the user can not enter too few letters. Ex: answer = ['continue', 'test', 'testicle'], user can not input t, te or tes because it will be ambiguous. User can however input test, which is not.

emingoo - Extract emails from google search results (Python)

2014-07-30T07:23:36-07:00

Python recipe 578498 by p@ntut$ (python3). Revision 2.

This is a quick and dirty script that does not use google REST api so use this with warning. It extracts emails from google search results. http://pantuts.com/2013/03/20/emingoo-extract-emails-from-google-search-results/

Archimedes Method for PI (arbitrary precision) (Python)

2013-03-02T21:56:42-08:00

Python recipe 578478 by Bjorn Madsen (decimal, math, pi, precision, python3).

The code below incorporates the newly revised python 3.3.0 decimal module to permit arbitrary precision (http://docs.python.org/3/library/decimal.html)

The recipe was originally by FB35 from http://code.activestate.com/recipes/576981-archimedes-method-for-calculating-pi/

Use rot13 to en/decrypt clear text (Python)

2012-11-07T09:17:51-08:00

Python recipe 578322 by Eric.sun (encrypt, python3).

Encryption.Using your solution to the previous problem, and create a "rot13" translator. "rot13" is an old and fairly simplistic encryption routine where by each letter of the alphabet is rotated 13 characters. Letters in the first half of the alphabet will be rotated to the equivalent letter in the second half and vice versa, retaining case. For example, 'a' goes to 'n' and 'X' goes to 'K'. Obviously, numbers and symbols are immune from translation.

topological sorting again (Python)

2013-03-06T19:21:11-08:00

Python recipe 578406 by yota (algorithm, graph, python3, sort, topological). Revision 9.

Topological sorting is the answer to the following question : in a direct acyclic graph, how can I pick up nodes "in order", such as upstream nodes are always before downstream ones ? Many solutions may exists, many algorithms too.

Alas, it seems I'm too stupid to understand already proposed recipes on topological sorting. Hopefully I do grasp the "write once, read many" concept.

Here, you will find a plain algorithm, optimized only for code clarity, of a topological sorting for direct acyclic graphs, implemented in python from the pseudo code found on wikipedia:

L ← Empty list that will contain the sorted elements
S ← Set of all nodes with no incoming edges
while S is non-empty do
    remove a node n from S
    insert n into L
    for each node m with an edge e from n to m do
        remove edge e from the graph
        if m has no other incoming edges then
            insert m into S
if graph has edges then
    return error (graph has at least one cycle)
else 
    return L (a topologically sorted order)

Only tested with python3.2, should work with other versions. Be careful, code indented with tabs, since space is evil è_é