Popular recipes tagged "meta:loc>100"

Uno (Text-Based) (Python)

2017-07-15T00:46:59-07:00

Python recipe 580811 by Brandon Martin (artificial_intelligence, cards, game, text_game, uno).

A text based recreation of the classic card game featuring functional AIs to play with. Some rules have been modified. User interface is text based, non-curses, using only simple python commands to draw it.

The Game of Tic Tac Toe in Python (Python)

2014-01-31T02:39:48-08:00

Python recipe 578816 by Captain DeadBones (beginner, game, python).

I thought this is a fun game to program. Easy to program and can teach a lot.

Captain DeadBones

Tkinter table with scrollbars (Python)

2017-05-06T19:06:05-07:00

Python recipe 580793 by Miguel Martínez López (scrollbars, table, tkinter). Revision 13.

I created here a tkinter table with scrollbar support. I use one of my other recipes for the mousewheel support and scrolling:

https://code.activestate.com/recipes/580640-scrolling-frame-with-mouse-wheel-support

Simple multicolumn listbox for tkinter (Python)

2017-05-02T22:27:15-07:00

Python recipe 580794 by Miguel Martínez López (listbox, multicolumn, table, tkinter).

This recipe makes easy to work a treeview widget like a table.

It has several options for styling:

heading_anchor
heading_font
heading_background
heading_foreground
cell_anchor
cell_background
cell_foreground
cell_font
cell_pady
height
padding
adjust_heading_to_content
stripped_rows
headers
selection_background
selection_foreground
field_background

The "command" parameter is a callback and its called each time a row is selected.

Tkinter frame with gradient (Python)

2017-03-11T03:43:56-08:00

Python recipe 580761 by Miguel Martínez López (canvas, frame, gradient, tkinter). Revision 4.

Frame with linear gradient using PIL.

It's also possible to make the same trick using tkinter PhotoImage.

http://stackoverflow.com/questions/10417524/why-is-photoimage-put-slow

But PIL is more efficient:

https://groups.google.com/forum/#!topic/comp.lang.python/nQ6YO-dTz10

Possible values for orient are: VERTICAL, HORIZONTAL. If orient is "vertical", then width is mandatory. If orient is "horizontal", then height is mandatory. If steps is None, then the gradient is composed of adjacent lines.

One possible practical application of gradient frames are tool bars. Gradient guives a visual clue of when an area starts and when an area finish.

Tkinter search box (Python)

2017-04-08T12:27:36-07:00

Python recipe 580773 by Miguel Martínez López (entry, search, searchbox, tkinter). Revision 9.

Instead of using two colors for active background and normal background, I use only one color and opacity parameter.

I trigger the feeling of a button using different colors when the mouse is and isn't over. Many modern HTML search boxes uses the same approach.

Command function receives text of entry box when button is pressed.

Guard against an exception in the wrong place (Python)

2017-06-25T17:17:43-07:00

Python recipe 580808 by Steven D'Aprano (context, exception, guard, manager). Revision 2.

Sometimes exception handling can obscure bugs unless you guard against a particular exception occurring in a certain place. One example is that accidentally raising StopIteration inside a generator will halt the generator instead of displaying a traceback. That was solved by PEP 479, which automatically has such StopIteration exceptions change to RuntimeError. See the discussion below for further examples.

Here is a class which can be used as either a decorator or context manager for guarding against the given exceptions. It takes an exception (or a tuple of exceptions) as argument, and if the wrapped code raises that exception, it is re-raised as another exception type (by default RuntimeError).

For example:

try:
    with exception_guard(ZeroDivisionError):
        1/0  # raises ZeroDivisionError
except RuntimeError:
    print ('ZeroDivisionError replaced by RuntimeError')


@exception_guard(KeyError)
def demo():
    return {}['key']  # raises KeyError

try:
    demo()
except RuntimeError:
    print ('KeyError replaced by RuntimeError')

Combobox Autocomplete (Python)

2017-04-03T15:17:26-07:00

Python recipe 580770 by Miguel Martínez López (autocomplete, combobox, entry, tkinter). Revision 11.

This is my own version of combobox autocomplete. The user can customize the matching function setting whether he wants to ignore case or whether the matching function should only match from the beginning of the string. The other possibility is to provide your own "auto complete function". The complete function returns all the found strings matching the text in the entry box.

It's also possible to customize the height of listbox and whether to use horizontal or vertical scrollbars.

Use arrows or Contro+n, Control+p to move selection on listbox.

This is a practical application of the combobox widget:

https://code.activestate.com/recipes/580771-tkinter-file-autocomplete-entry/

Unix tee-like functionality via a Python class (Python)

2017-03-31T14:30:30-07:00

Python recipe 580767 by Vasudev Ram (cli, command, commandline, linux, python, tee, unix, utilities, windows).

The Unix tee commmand, when used in a command pipeline, allows you to capture the output of the preceding command to a file or files, while still sending it on to standard output (stdout) for further processing via other commands in a pipeline, or to print it, etc.

This recipe shows how to implement simple tee-like functionality via a Python class. I do not aim to exactly replicate the functionality of the Unix tee, only something similar.

More details and sample output here:

https://jugad2.blogspot.in/2017/03/a-python-class-like-unix-tee-command.html

Tkinter Desktop Notifications or Popups (Python)

2017-04-01T19:27:59-07:00

Python recipe 580769 by Miguel Martínez López (alert, easing, notification, popup, tkinter). Revision 2.

This trick requires pytweening:

https://pypi.python.org/pypi/PyTweening

Install writing:

 pip install pytweening

It shows a notification on one corner of the screen,and gradually the notification disappears using an easing function. By default, it uses a linear easing function.

The class Notification_Manager has the method create_notification, but it also has some convenient methods to create easily some kind of notifications: success, alert, info, warning.

Tkinter Datepicker (like the jQuery UI datepicker) (Python)

2017-06-19T18:22:01-07:00

Python recipe 580725 by Miguel Martínez López (calendar, datepicker, megawidget, tkinter). Revision 18.

It's based on ttkcalendar.py. But the internals are totally changed.I don't use for example the Treeview widget. I added more features also:

On mouse over, the day label changes the background
The selected day has an outstanding style
Added support for many hotkeys

These are the default bindings:

Click button 1 on entry: Show calendar
Click button 1 outside entry and calendar: Hide calendar
Escape: Hide calendar
CTRL + PAGE UP: Move to the previous month.
CTRL + PAGE DOWN: Move to the next month.
CTRL + SHIFT + PAGE UP: Move to the previous year.
CTRL + SHIFT + PAGE DOWN: Move to the next year.
CTRL + LEFT: Move to the previous day.
CTRL + RIGHT: Move to the next day.
CTRL + UP: Move to the previous week.
CTRL + DOWN: Move to the next week.
CTRL + END: Close the datepicker and erase the date.
CTRL + HOME: Move to the current month.
CTRL + SPACE: Show date on calendar
CTRL + Return: Set current selection to entry

Interactive Mandelbrot Fractal Using HTML5 Canvas (JavaScript)

2017-06-06T03:48:09-07:00

JavaScript recipe 580804 by FB36 (canvas, fractal, graphics, math).

Interactive Mandelbrot Fractal Using HTML5 Canvas.

(Download and save as html file and open it.)

(Tested only using Firefox browser.)

XML viewer for Tkinter or XML treeview (Python)

2017-02-22T23:00:21-08:00

Python recipe 580752 by Miguel Martínez López (browser, tkinter, treeview, viewer, xml). Revision 3.

Tk widget to display XML for Python. I use the treeview widget. There is no external dependency.I also added support for autoscrollbars.

[xtopdf] Publish Delimiter-Separated Values (DSV data) to PDF (Python)

2016-12-17T19:08:33-08:00

Python recipe 580736 by Vasudev Ram (commandline, csv, data, files, formats, pdf, pdf_generation, python, tsv, utilities, xtopdf).

This recipe shows how to publish delimiter-separated values (a commonly used tabular data format) to PDF, using the xtopdf toolkit for PDF creation. It lets the user specify the delimiter via one of two command-line options - an ASCII code or an ASCII character. As Unix filters tend to do, it can operate either on standard input or on input filenames given as command-line arguments. In the case of multiple inputs via files, each input goes to a separate PDF output file.

Tkinter table (Python)

2017-05-02T21:19:51-07:00

Python recipe 580786 by Miguel Martínez López (table, tkinter). Revision 24.

Table of data for tkinter.

Here there is an improved vesion with vertical scrollbar support:

https://code.activestate.com/recipes/580793-tkinter-table-with-scrollbars

Reversi Othello (Python)

2016-09-19T18:03:09-07:00

Python recipe 580698 by FB36 (ai, algorithm, algorithms, game, games).

Reversi/Othello Board Game using Minimax, Alpha-Beta Pruning, Negamax, Negascout algorithms.

Tkinter treeview like a table or multicolumn listbox (Python)

2017-05-02T22:27:48-07:00

Python recipe 580746 by Miguel Martínez López (editable, listbox, megawidget, multicolumn, table, tkinter, treeview). Revision 33.

This trick provides use my other recipe:

https://code.activestate.com/recipes/580794-simple-multicolumn-listbox-for-tkinter/

This recipes defines a Tk_Table: A table that extends the multicolumn listbox adding row numbers, making the cells editable and adding autoscrollbars.

Tk_Table

It has the same options than Multicolumn_Listbox, and some extra parameters to configure the new functionality.

Setting the editable keyword to True, makes the widget editable.

If you want stripped rows, pass the stripped_rows with a tuple (or list) of two colors.

If you want row numbers, then pass to row_numbers parameter a True value.

These are the extra options for this class:

entry_background
entry_foreground
entry_validatecommand
entry_selectbackground
entry_selectborderwidth
entry_selectforeground
scrollbar_background
scrollbar_troughcolor
rowlabel_anchor
rowlabel_minwidth
rowlabel_hoverbackground
frame_relief
frame_borderwidth
frame_background
row_numbers

Scrolled Frame V2 (Python)

2017-05-06T18:54:47-07:00

Python recipe 580797 by Miguel Martínez López (frame, scrolling, tkinter). Revision 4.

This is another version of scrolled frame. It doesn't use Canvas. Instead it does the trick using place geometry manager.

Based on these codes:

https://github.com/alejandroautalan/pygubu/blob/master/pygubu/widgets/tkscrolledframe.py
http://wiki.tcl.tk/9223

This is my other version of scrolled frame:

https://code.activestate.com/recipes/580640-scrolling-frame-with-mouse-wheel-support/

Metro Spinner for Tkinter (Python)

2017-04-10T21:14:36-07:00

Python recipe 580777 by Miguel Martínez López (canvas, image, pil, rotation, spinner, tkinter).

I create a rotating image class RotatingIcon inspired and based on this code:

http://stackoverflow.com/questions/15736530/python-tkinter-rotate-image-animation

Features:

Methods to stop and start the animation
The animation automically stops when the window is not mapped, and the animation continues when the window is mapped again
Time setting to control the speed of the animation
All the formats accepted for PIL could be used. XBM format is automatically converted to Tk Bitmap. The advantage of Bitmats is the possibility to change the color of the foreground.

I added 6 different styles of spinners with different sizes.

I used fontawesome.io for the icon generation.

For more metro widgets see here:

https://code.activestate.com/recipes/580729-metro-ui-tkinter/

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.