Position The Cursor Almost Anywhere Inside Standard Text Mode Python Terminal. (Python)

2012-06-17T17:10:29-07:00

Python recipe 578167 by Barry Walker (amiga, apple, cursor, demo, e_uae, linux, locate, macbook_pro, winuae).

A DEMO showing the power of the ANSI (ASCII) _Esc_ codes in standard text mode Python.

ANSI _Esc_ codes here:- http://www.termsys.demon.co.uk/vtansi.htm

There are only three important things from the ANSI _Esc_ codes that are needed to obtain a neat finish to a program written in standard text mode Python:-

1) Clearing the screen. (Already done without the dedicated ANSI _Esc_ code!)

2) Colours and other character attributes. (Already done!)

3) A forced printing of a character or string from a given location inside the Terminal window.

To clear the screen does NOT require another dedicated ANSI _Esc_ code, (although it exists). This code uses the print("\r\n") method which works in all cases coupled with the one function supplied......

For The Classic AMIGA, E-UAE, WinUAE and Linux using Python(s) 1.4.0 to Python 3.2.2. Read the code for more information...

Enjoy finding simple solutions to often very difficult problems...

Bazza, G0LCU.

Colo(u)rs Inside Text Mode Python... (Python)

2012-08-21T21:01:57-07:00

Python recipe 578101 by Barry Walker (amiga, apple, color, colour, demo, display, e_uae, linux, macbook_pro, windows, winuae). Revision 2.

A simple DEMO to show how to enhance Python inside a Terminal. This works on Classic AMIGAs, E-UAE, Debian Linux 6.0.0, PCLinuxOS 2009, Windows XP and Vista and WinUAE, from Python 1.4.0 to 3.3A2.

Due to a complaint about my _fun_ upload recently I decided to post this so that the MANY can now find out how to manipulate text inside a Python Terminal window so that it looks much better.

Read the code for more information...

Enjoy finding simple solutions to often very difficult problems...

Bazza...

A DEMO to show how to write text into the Python terminal Title Bar... (Python)

2013-09-17T17:55:53-07:00

Python recipe 578662 by Barry Walker (apple, bar, cygwin, demo, linux, macbook_pro, title, title_bar).

This DEMO is show how to write some text of your choice into the Title Bar of the Python terminal window.

Firstly it imports "time" just for this demo so that a simple time delay can be generated. Next the Python terminal window is written to for the 5 seconds of delay; see code. And finally the Title Bar is restored to normal...

A snapshot image can be seen here:-

http://wisecracker.host22.com/public/Title_Bar.jpg

Bazza...

Obfuscation In Bash Shell. (Bash)

2014-12-19T20:01:30-08:00

Bash recipe 578986 by Barry Walker (apple, bash, macbook_pro, obfuscation).

IMO, the immense power of the shell...

Please let me know if there is any other human readable language that can do this...

The DEMO code below was an idea I formed to see how to make a bash script very difficult to hack.

Everything in it is made easy to read so as to see this idea working.

It uses bash variables ONLY and although I have used bash loops to create the variables in this DEMO you could create your own set of variables and 'source' them to the the obfuscated code before running the main body of the code.

It also goes without saying that you could obfuscate the changing of any or all the variable allocations at any time AFTER the code runs to make it even more obfuscated and as may times as you wish...

I would be seriously difficult to actually write a lsrge bash app' using this method but boy oh boy would it be fun?!?

Testbed:- Macbook Pro, OSX 10.7.x and above, using default bash terminal...

LBNL, yeah I am aware of 'eval' but as it is obfuscated and can have as many obfuscated variables as I wish allocated to it then why worry... ;o)

Enjoy finding simple solutions to often very difficult problems...

Bazza...

Platform Independent 1KHz Pure Audio Sinewave Generator... (Python)

2012-10-23T12:53:37-07:00

Python recipe 578301 by Barry Walker (apple, audio, demo, generator, linux, macbook_pro, program, pyaudio, signal, sinewave, sound, source, windows). Revision 2.

IKHz_SW_OSX.py

A mono _pure_ sinewave generator using standard text mode Python 2.6.7 to at least 2.7.3.

This DEMO kids level 1KHz generator is mainly for a MacBook Pro, (13 inch in my case), OSX 10.7.5 and above. See below...

It is another simple piece of testgear for the young amateur electronics enthusiast and uses pyaudio fully installed for it to work.

PyAudio can be obtained from here:- http://people.csail.mit.edu/hubert/pyaudio/

This was primarily for a MacBook Pro, but works on at least 2 Linux flavours and Windows Vista 32 bit...

The sinewave generated is near excellent...

Enjoy finding simple solutions to often very difficult problems... Bazza, G0LCU...

A Shell, Binary To Hexadecimal To Decimal Demo... (Bash)

2013-01-11T18:31:03-08:00

Bash recipe 578413 by Barry Walker (apple, bash, binary, decimal, demo, hexadecimal, linux, macbook_pro, shell, terminal).

This little DEMO may be common knowledge to the big guns but not to amateurs like myself, so......

This is an Apple Macbbok Shell/Terminal DEMO shell script to show how to:-

1) Create a binary file... 2) Save it to your DEFAULT /directory/drwawer/folder/... 3) Display a hexadecimal dump of said binary file to prove that it is binary... 4) Select a single BYTE of that file and save it as an ASCII text decimal _number_, also to your DEFAULT /directory/drawer/folder/... 5) Read this ASCII text decimal number back in again... 6) Add this string representation to a number... 7) Stop...

It was intended purely for OSX 10.7.5 and above using the default terminal and shell...

It does work on many Linux flavours and shells/terminals also however.

Written so the anyone can understand what is going on.

The two files generated and saved in this DEMO to your DEFAULT /directory/drawer/folder/ are:-

BinaryString.dat BinaryString.txt

This WILL lead to something very unusual in the not too distant future...

This is Public Domain and you may do with it as you wish...

Enjoy finding simple solutions to often very difficult problems...

Bazza, G0LCU...

Platform Independent White Noise Generator... (Python)

2012-11-25T10:10:45-08:00

Python recipe 578350 by Barry Walker (apple, audio, demo, generator, linux, macbook_pro, noise, program, pyaudio, signal, sound, source, windows).

This code is a derivative of the Pure Sinewave Generator and produces a continuous noise out of the speakers or headphone sockets.

It is for the hobbyist to be able to generate a pseudo-random noise signal for testing with.

It is issued as Public Domian and you may do with it as you please.

It is very easy to convert to Python 3.x.x but as OSX only has 2.7.x and lower ATM then these are what are used...

An installation of pyaudio IS needed for this to work; see the code for more information.

It is near platform independent but sadly the AMIGA is not included, but hey, I have already shown how generate sound for Classic AMIGAs.

Enjoy finding simple solutions to often very difficult problems...

Bazza, G0LCU...

A DEMO To Show How To Expand A Standard Python Terminal On The Fly... (Python)

2012-12-17T12:47:14-08:00

Python recipe 578383 by Barry Walker (apple, campimeter, demo, linux, macbook_pro, size, terminal, window).

This code shows how to open up a default Terminal running Python to tha maximum allowed on the _desktop_. I decided on writing code to do a crude emulation of a Campimeter. Anyone who has worn spectacles for a long time has had this test done at the optician's. Originally written for a Macbook Pro, OSX 10.7.5 but also tested on Debian Linux 6.0.x. READ the code for more information!!! This code WILL alter the size of the Terminal window AND changes the colours too, although it is very easy to return back to the default state it is NOT included in the code... I EXPECT professionals to know how to doo that.

Before running Python inside the Terminal ensure the Terminal window is at the uppermost left hand corner of your desktop...

I needed the maximised Python Terminal for something else but this was the easiest way to demonstrate ho to do it through Python...

Written so that kids can understand what is going on...

Enjoy finding simple solutions to often very difficult problems... ;o)

Bazza, G0LCU...

A Simple Clock, Well Maybe Not That Simple... (Bash)

2013-07-17T17:40:18-07:00

Bash recipe 578610 by Barry Walker (apple, clock, digital, digits, display, large, macbook_pro, readout, terminal).

Hi all...

Do you remember this little snippet?

http://code.activestate.com/recipes/578079-pure-fun-for-text-mode-python/?in=user-4177147

Well it was voted down, but who cares? I surely don't! So to those that voted this FUN piece of Python coding down, you are now about to see what the aim was.

However although I have subsequently done what I said I would, that is, to create large digits as an _at_a_glance_ digital readout for a project in Python I have decided not to upload it. However I have decided to let this one go as a bash/shell script instead.

It is a nothing but a simple clock, well, maybe not that simple; but as I am into shell stuff at the moment I thought I would share this with you.

The terminal does have its colours changed and the cursor disabled for the session but I expect you big guns to be able to return back to normal in a jiffy.

I am an amateur coder and if that is easy for me then you pros should have no problems.

This code is not like most of my other stuff as is NOT Public Domain...

It is only a DEMO to see what an at a glance display would look like in a terminal.

Move away to a distance and see which of the two time readings you can still read... ;o)

It is for a Macbook Pro 13" OSX 10.7.5 and uses bash imode. It will probably work on most Linux machines too but I haven't tested it...

This is purely a DEMO only and any other special effects, (e.g. flashing colon every second), alram, etc, I have already experimented with and is easy enough to do...

My intention is to use this as a kids level text mode digital voltmeter I am doing.

Enjoy...

Bazza...

Simple Bash Text Mode Sine Curve Generator. (Bash)

2014-08-12T20:57:39-07:00

Bash recipe 578921 by Barry Walker (apple, bash, cygwin, graph, linux, macbook_pro, text). Revision 2.

This bash script is a taster for a kids level, audio, text mode, sweep generator. The code just creates a single cycle of a quantised sine curve inside an 80 x 24 bash terminal. This will be the calculator for a sinewave sweep generator from about 50Hz the 12KHz... The code tells you more and the display is in comments at the end...

A simple raw hexdumper. (Python)

2016-09-19T13:24:37-07:00

Python recipe 580697 by Barry Walker (amiga, apple, fs_uae, hex, hexdump, linux, macbook_pro, raw_hexdump, unix, windows, winuae).

This is not a hexreader. This code creates a raw hexdump of a binary file that is whitespace, optional, delimited. The dump is saved into the current directory with a ".hex" extension.

It works on just about any current platform but is designed around a stock Amiga A1200(HD) with Python 1.4.0. It also works on the current stable version 3.5.2.

I needed a hexdump some years ago for banging the Amiga hardware, and decided to modify recently for another usage but it had to still work on version 1.4.0 for the classic A1200.

Enjoy...

Simple Text Mode Digital Oscilloscope Graphics DEMO. (Python)

2014-01-21T19:07:49-08:00

Python recipe 578812 by Barry Walker (apple, demo, graphics, linux, macbook_pro).

This is a DEMO to switch a *NIX terminal from text to _graphics_ mode on the fly.

The graphics characters are limited to lowercase 'a' through 'z' and this DEMO just prints a small subset to see what a fun, kids level, 8 channel Logic-Analyser/Digital-Oscilloscope might look like.

This may not work in every *NIX style terminal but does work on default terminals using bash on OSX 10.7.5, PCLinuxOS 2009 and Debian Linux 6.0.x.

Tested on Python 2.5.x to 3.3.2 on the above platforms... (It might work on earlier versions of Python but untested.)

Enjoy finding simple solutions to often very difficult problems...

Bazza...

For MacBook_Pro-Heads Only. Simple LF Audio Oscilloscope Using Standard Text Mode Python. (Python)

2012-10-07T14:15:55-07:00

Python recipe 578282 by Barry Walker (anim, apple, audio, demo, display, macbook_pro, oscilloscope, pyaudio, scope, sound).

For MacBook_Pro-Heads Only. Simple LF Audio Oscilloscope Using Standard Text Mode Python.

SimpleScope_OSX.py

Do you remember this upload from myself on 26-06-2011...

http://code.activestate.com/recipes/577771-simple-lf-audio-oscilloscope-using-standard-text-m/?in=user-4177147

Well here is an August 2012 vintage MacBook Pro 13 inch version of it for OSX 10.7.5...

This is proof of concept code for a kids level project I am doing for a MacBook Pro, 13 inch, OSX 10.7.5. A DEMO to show how to display a waveform using standard text mode Python. "pyaudio" must be installed for this to work. Levels are set using the standard audio mixers, (System Preferences -> Sound).

Just whistle a signal of say 300Hz to 3KHz, (normal voice spectrum), using say, the internal mic, and watch a waveform appear inside the X-Y graticule.

Read the code for more information.

This code is GPL2, but, the hardware information is Public Domain.

(I am looking into including Windows and Linux variants too using pyaudio to access the sound system.)

Enjoy finding simple solutions to often very difficult problems.

Bazza, G0LCU...

A Building Block, Bash Binary File Manipulation... (Bash)

2013-01-29T22:07:57-08:00

Bash recipe 578441 by Barry Walker (apple, bash, binary, linux, macbook_pro, script, shell). Revision 2.

Apologies for any typos, and IF this has been done before...

The code generates a 256 byte binary file of _characters_ 0x00 to 0xFF for general usage and generates another binary file manipulated in a basic way.

The for loops in the code are purely for DEMO purposes only.

This is Public Domain and you may do with it as you please. I have uploaded it elsewhere too...

Watch for wordwrapping, etc and read the code for more information...

Enjoy finding simple solutions to often very difficult problems...

Bazza, G0LCU...

Pure Fun For Text Mode Python... (Python)

2012-04-02T21:30:18-07:00

Python recipe 578079 by Barry Walker (apple, demo, display, linux, macbook_pro). Revision 2.

Printing to the screen with a difference. ;oD

Works on almost any version of Python running in a terminal inside Linux.

Not Quite So Simple QuickTime Player, Python Audio Capture. (Python)

2014-11-08T19:10:58-08:00

Python recipe 578960 by Barry Walker (apple, audio, audio_capture, capture, macbook_pro, maccbook_pro, sample, signal_capture).

Not Quite So Simple QuickTime Player, Python Audio Capture.

This DEMO code captures a function to generate a user 5 second Audio sample in Apple *.aifc format. It is then converted to DC quailty *.WAV format.

It uses default shell system files to do the task.

An AppleScript is created to do the sample but due to the limitations of QT Player there is a 1.5 second delay to allow QuickTine Player to start up. It is not entirely quiet but unobtrusive enough as to be like quiet mode...

This is again a means a signal capture for an AudioScope without the need for special tools or installs.

Read the code for more information.

IMPORTANT!!! This DEMO WILL delete all *.aifc files inside the default $HOME/Movies directory, so be aware.

A simple ALSA one is on its way too...

It actually works on Python 3.4.1 but I have no idea if it works below Python 2.5.6...

Bazza...

Kids Level Analogue Data Logger, (Transient Recorder), Program. (Python)

2011-07-31T16:14:48-07:00

Python recipe 577796 by Barry Walker (amiga, analogue, anim, apple, arduino, data, demo, display, e_uae, linux, logger, macbook_pro, program, windows, winuae). Revision 2.

This code is kids level Analogue Data-Logger(/Transient-Recorder), using the Arduino series of dev' boards.

It is no where near completion and is a second feeder/feeler upload only.

It is designed to work from Classic Text Mode Python from Versions 1.4.0 to 2.7.2 on a Classic AMIGA, WinUAE, Linux and Windows, (32 bit), to Vista. Not tested on Python for Windows 7, (32 bit), nor Mac OSX flavours as I don't have these OSes.

Linux versions run from a default root terminal for the time being.

The Arduino dev' board IS catered for in the code for the above platforms just thoroughly read the code for more information. It defaults to a DEMO mode so you can see it working...

The test code for the Arduino Diecimila Dev Board is here:-

http://code.activestate.com/recipes/577625-arduino-diecimila-board-access-inside-winuae-demo/

Enjoy finding simple solutions to often very difficult problems... ;o)

Bazza, G0LCU...

A Simple Clock, Well Maybe Not That Simple... (Python)

2013-08-09T18:15:09-07:00

Python recipe 578633 by Barry Walker (amiga, apple, big, clock, digits, e_uae, linux, macbook_pro, time, winuae).

BIG_TIME.py

Remember this?

http://code.activestate.com/recipes/578610-a-simple-clock-well-maybe-not-that-simple/

And this?

http://code.activestate.com/recipes/578079-pure-fun-for-text-mode-python/?in=user-4177147

Well the Python version of the top URL has been uploaded to AMINET on 01-08-2013...

Now the big gun that complained about my fun Python upload and voted it down can see that this was a serious attempt ae viewing "Hello World!" in extra large xharacters.

This is the result in Python...

It is ONLY uploaded to AMINET and that is where it will stay.

If you want it then use the pointer inside code section.

Remember to change the BIG_TIME.py.txt file on AMINET to BIG_TIME.py...

Designed around a Macbook Pro OSX 10.7.5 for the Classic AMIGA platforms and works on Debian 6.0.x and PCLiuxOS 2009 using Python versions 1.4.0 to 3.3.2 inclusive...

Although the description in the AMINET readme below is for an AMIGA environment it does not take a genius to adapt it to the other platforms...

Boy was this difficult to get working in a single Python script...

ENJOY...

This is the AMINET readme file:-

Short: A Big Digital Clock Python Script. Author: wisecracker@tesco.net (Barry Walker) Uploader: wisecracker@tesco.net (Barry Walker) Type: dev/src Version: 1.00.00 Architecture: generic; m68k-amigaos

Distribution: Public Domain, Emailware.

============================================================================

Architectures: Classic AMIGAs, E-UAE and WinUAE.

MINIMUM Requirements Are:-

    68EC020 CPU and 2MB RAM total, example, a standard A1200(HD).
    WinUAE Version 1.5.3 minimum. 
    Standard OS3.0x install or better.
    Python Version 1.4.0 or higher.
    (Also, OSX 10.7.5, Debian Linux 6.0.x and PCLinuxOS 2009.)

History.

01-08-2013. Version 1.00.00:- Original upload to AMINET...

This is dedicated entirely to the AMIGA community and AMINET and will not be uploaded elsewhere.

To install just download the "BIG_TIME.py.txt" file and rename it to "BIG_TIME.py" without the quotes. Drag this file into your AMIGA PYTHON: volume and...

From a minimum of Python Version 1.4.0 prompt:-

>>> exec(open("PYTHON:BIG_TIME.py").read())<CR>

And away you go...

This code is/was designed to work in all versions of Python from 1.4.0 to 3.3.2 on at least the platforms shown in the Architectures: section.

It was developed entirely on a Macbook Pro OSX 10.7.5 and finalised using MEmacs for the AMIGA.

This is just a simple DEMO to show how to generate large digits in Python and put them to use as an _AT_A_GLANCE_ digital clock.

It starts up by generating all of the characters available for the DEMO for five seconds then goes into the clock proper.

As this code is multi platform AND multi Python version then it is issued as GPL2...

Enjoy finding simple solutions to often very difficult problems...

                            IMPORTANT:-
                            -----------

The Legal Stuff:-
-----------------

This Python script is issued under the GPL2 licence conditions.
The author is not responsible for any damage to, or loss of, or
failure of equipment or data caused in any way by the use of this
script. There is NO warranty with the use of this software release
and YOU USE IT AT YOUR OWN RISK.

Testing Evaluation:-
--------------------

All WinUAE, E-UAE and Classic AMIGA test conditions were/are running
standard OS3.0x/OS3.1x and using standard ~topaz 8~ fonts throughout.

I have no idea what strange configuration setups will create so refer
to the ~The Legal Stuff~ above.

Contact:-

Mr Barry Walker, G0LCU.

Email:- wisecracker@tesco.net

Author of the ~TestGear?~ projects in the ~docs/hard~ drawer of AMINET.

A very useful HardWare related site, (C) Anthony Hoffman, for modifications, schematics, repairs and the like is:-

                      http://amiga.serveftp.net/

============================================================================

An EM87/6HU6 Magic Eye Valve/Tube Animation DEMO... (Python)

2011-05-15T10:21:10-07:00

Python recipe 577695 by Barry Walker (analogue, anim, apple, demo, display, linux, macbook_pro, windows).

This DEMO displays the action of an EM87 Magic Eye tuning indicator using a standard Python 2.6.x or greater install. It is for at least Windows Vista 32 Bit and at least Debian Linux 6.0.0.

It is for FUN only and shows how to generate yet another analogue display using a default text mode install.

With careful thought and viewing between Code Page 850, (Windows Vista onwards), and Code Page 437, (EFFECTIVELY Linux), one can pick the "graphics" characters to generate some interesting old style text mode displays on screen.

Enjoy finding simple solutions to often very difficult problems...

Bazza...

A simple shell script to keep the wife off of your back... (Bash)

2013-12-09T20:05:49-08:00

Bash recipe 578781 by Barry Walker (apple, bash, linux, macbook_pro, reminder, script, shell).

How many times have you been asked to remember to do something from the other half whilst she is out for a short while.

For example: "You WILL check the dinner every few minutes won't you?"

And how many times did/do you forget?

Most of us have been there...

This is a simple kids level, practical learning, shell script that generates an "xterm" with your reminder inside every 30 seconds for a period of 3 seconds.

It is always be the active front window for 3 seconds at a time to _annoy_ you into remembering.

Usage: reminder "What you have to remember here using spaces AND double quotes."<CR>

Just reanme the downloaded script to reminder and remember to chmod it as required.

Just run it from your default terminal and when finished press Ctrl-C just AFTER the xterm window closes.

There is NO error detection so steer clear of any special characters in you reminder text.

Enjoy finding simple solutions to often very difficult problems...

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