Popular recipes tagged "meta:min_python_3=3" but not "tkinter"

PDF Text Extraction using fitz / MuPDF (PyMuPDF) (Python)

2016-03-17T12:00:06-07:00

Python recipe 580626 by Jorj X. McKie (cbz, epub, mupdf, openxps, pdf, pymupdf, text_extraction, xps).

Extract all the text of a PDF (or other supported container types) at very high speed. In general, text pieces of a PDF page are not arranged in natural reading order, but in the order they were entered during PDF creation. This script re-arranges text blocks according to their pixel coordinates to achieve a more readable output, i.e. top-down, left-right.

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.

Rotate a PDF page in 3 lines (Python)

2016-11-06T11:33:59-08:00

Python recipe 580713 by Jorj X. McKie (fitz, mupdf, pdf, pymupdf). Revision 2.

PyMuPDF v1.9.3 now supports several new features for manipulating PDFs.

Here is an example to rotate a page with just a few lines of Python code.

How to delete pages in a PDF using fitz / MuPDF / PyMuPDF (Python)

2016-05-01T09:26:44-07:00

Python recipe 580657 by Jorj X. McKie (mupdf, pdf, pdf_generation).

A new method select() in PyMuPDF 1.9.0 allows selecting pages of a PDF document to create a new one. Any Python list of integers (0 <= n < page count) can be taken.

The resulting PDF contains all links, annotations and bookmarks (provided they still point to valid targets).

TicTacToe (text based) (Python)

2016-11-27T07:10:56-08:00

Python recipe 580723 by Brandon Martin (artificial_intelligence, game, python, random, tac, tic, tictactoe, toe).

A text based version of TicTacToe for Python. Difficulty is not yet implemented, however, a computer player has been implemented that cannot be beaten. Posting just for fun.

How to parse a table in a PDF document (Python)

2016-04-10T22:43:57-07:00

Python recipe 580635 by Jorj X. McKie (cbz, epub, fitz, mupdf, openxps, parsing, pdf, pymupdf, table, xps). Revision 4.

A Python function that converts a table contained in a page of a PDF (or OpenXPS, EPUB, CBZ, XPS) document to a matrix-like Python object (list of lists of strings).

Simple signal library, similar to PyQT signals (Python)

2017-04-01T21:11:50-07:00

Python recipe 580764 by Miguel Martínez López (event, pubsub, signal). Revision 11.

Simple signal library similar to PyQT signals. Signals helps to decouple code in GUI applications. This code could be used in Tkinter applications for example.

Inspired and based in these other modules:

https://github.com/shaunduncan/smokesignal

https://github.com/dgovil/PySignal

https://github.com/jek/blinker

Easily create a Python REPL in Python (Python)

2016-10-31T21:53:30-07:00

Python recipe 580712 by Vasudev Ram (code_module, dynamic, evaluation, read_eval_print_loop, repl).

This recipe shows how to easily create a Python REPL (Read-Eval-Print Loop) in Python itself. This can allow the user to interact with a running Python program, including typing in Python statements at the REPL prompt, defining functions, using and changing variables that were set before the interaction started, and those variables modified during the interaction, will persist in the memory of the program, for any use, even after the interaction is over, as long as the program continues to run.

Python add/set attributes to list (Python)

2015-09-29T16:28:46-07:00

Python recipe 579103 by webby1111 (attributes, class, dictionary, list, subclass). Revision 3.

Python Attribute List

Add/set attributes to python lists.

A google search for "add attributes to python lists" yields no good stackoverflow answer, hence the need for this.

Useful for machine learning stuff where you need labeled feature vectors.

This technique can be easily adapted for other built-ins (e.g. int).

The Problem

a = [1, 2, 4, 8]
a.x = "Hey!" # AttributeError: 'list' object has no attribute 'x'

The Solution

a = L(1, 2, 4, 8)
a.x = "Hey!"
print a       # [1, 2, 4, 8]
print a.x     # "Hey!"
print len(a)  # 4

# You can also do these:
a = L( 1, 2, 4, 8 , x="Hey!" )                 # [1, 2, 4, 8]
a = L( 1, 2, 4, 8 )( x="Hey!" )                # [1, 2, 4, 8]
a = L( [1, 2, 4, 8] , x="Hey!" )               # [1, 2, 4, 8]
a = L( {1, 2, 4, 8} , x="Hey!" )               # [1, 2, 4, 8]
a = L( [2 ** b for b in range(4)] , x="Hey!" ) # [1, 2, 4, 8]
a = L( (2 ** b for b in range(4)) , x="Hey!" ) # [1, 2, 4, 8]
a = L( 2 ** b for b in range(4) )( x="Hey!" )  # [1, 2, 4, 8]
a = L( 2 )                                     # [2]

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

Get names and types of all attributes of a Python module (Python)

2016-10-06T17:21:42-07:00

Python recipe 580705 by Vasudev Ram (documentation, introspection, modules, reflection, type).

This recipe shows how to get the names and types of all the attributes of a Python module. This can be useful when exploring new modules (either built-in or third-party), because attributes are mostly a) data elements or b) functions or methods, and for either of those, you would like to know the type of the attribute, so that, if it is a data element, you can print it, and if it is a function or method, you can print its docstring to get brief help on its arguments, processsing and outputs or return values, as a way of learning how to use it.

The code for the recipe includes an example call to it, at the end of the code. Note that you first have to import the modules that you want to introspect in this way.

Roman Numeral Converter (Python)

2016-12-13T05:05:52-08:00

Python recipe 580731 by Brandon Martin (math, numbers, numerals, roman).

Provides two functions: romanToNumber - Converts a string of Roman Numerals (I,V,X,L,C,D,M) into an integer. (ignores formatting, will return best guess if improperly formatted) numberToRoman - Converts an integer into a string of Roman Numerals

Send autohotkey commands with Python (Python)

2017-01-02T01:33:31-08:00

Python recipe 580740 by Miguel Martínez López (autohotkey, python).

I use an asterisk (*) as a command line argument to read the autohotkey script from standard input (stdin). https://autohotkey.com/docs/Scripts.htm

Decrypt a PDF using fitz / MuPDF (PyMuPDF) (Python)

2016-03-17T12:22:10-07:00

Python recipe 580627 by Harald Lieder (decompression, decryption, pdf, repair).

It's more a code snippet. Shows how to dynamically check whether a PDF is password protected. If it is, decrypt it and save it back to disk un-encrypted.

Create Tiles of Images with fitz / MuPDF (PyMuPDF) (Python)

2016-04-26T19:54:31-07:00

Python recipe 580629 by Jorj X. McKie (mupdf, png, pymupdf, tiles). Revision 4.

Take an image file (like PNG) and create a new one consisting of arbitrary tiles of the original (or overlay an existing image with selective tiles of another).

JSON Formatted Logging (Python)

2016-05-27T01:07:42-07:00

Python recipe 580667 by Michael Blan Palmer (json, logging, python).

I have created a package that outputs JSON formatted lines to a log file. It can make use of the standard logging parameters and/or take custom input. The use of JSON in the log file allows for easy filtering and processing.

Saving a numpy array to png image using fitz / MuPDF (PyMuPDF) (Python)

2016-03-19T12:57:38-07:00

Python recipe 580630 by Harald Lieder (fitz, image, mupdf, numpy, png, pymupdf). Revision 2.

If a pixel array is defined in numpy, it can be saved as a PNG image VERY fast if you use PyMuPDF.

Convert Spelled out Integers (e.g. three thousand two hundred fifty) into Integers (e.g. 3250) and Vice Versa (Python)

2016-07-14T21:08:01-07:00

Python recipe 580689 by Chathura Gunasekara (integers, numbers, python, strings).

-Provides an isNumber function that can test if a floating point number is a number -str_to_int can convert a spelled out integer (e.g. 'one hundred thirty five') to its numeric form (e.g. 135) -int_to_str can convert an integer into its spelled out form.

Convert Spelled out Integers (e.g. three thousand two hundred fifty) into Integers (e.g. 3250) and Vice Versa (Python)

2016-06-09T20:35:26-07:00

Python recipe 580679 by Brandon Martin (integers, numbers, python, strings).

Register exit function (Python)

2016-05-31T00:42:47-07:00

Python recipe 580672 by Giampaolo Rodolà (exit, python, signal). Revision 3.

This is a function / decorator which registers a function which will be executed on "normal" interpreter exit or in case one of the signals is received by this process (differently from atexit.register()). Also, it makes sure to execute any other function which was previously registered via signal.signal(). If any, it will be executed after our own fun. The full blogpost explaining why you should use this instead of atexit module is here: http://grodola.blogspot.com/2016/02/how-to-always-execute-exit-functions-in-py.html