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What is Python? Python is a widely-used programming language used in many of the computer science classes here at St. What is PIL/Pillow? PIL (Python Imaging Library) adds many image processing features to Python. If you’d like to discover what else python can do for you, such as how to get root domain from URL, make sure to check out our blog. Import module works in Terminal but not in IDLE. When using python in IDLE on Mac, each python installation has it’s own /lib/site-packages for 3rd party modules.

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This chapter describes the current implementation of the Open ScriptingArchitecture (OSA, also commonly referred to as AppleScript) for Python,allowing you to control scriptable applications from your Python program,and with a fairly pythonic interface. Development on this set of modules hasstopped.

For a description of the various components of AppleScript and OSA, and to getan understanding of the architecture and terminology, you should read Apple’sdocumentation. The “Applescript Language Guide” explains the conceptual modeland the terminology, and documents the standard suite. The “Open ScriptingArchitecture” document explains how to use OSA from an application programmerspoint of view. In the Apple Help Viewer these books are located in the DeveloperDocumentation, Core Technologies section.

As an example of scripting an application, the following piece of AppleScriptwill get the name of the frontmost Finder window and print it:

In Python, the following code fragment will do the same:

As distributed the Python library includes packages that implement the standardsuites, plus packages that interface to a small number of common applications.

To send AppleEvents to an application you must first create the Python packageinterfacing to the terminology of the application (what Script Editorcalls the “Dictionary”). This can be done from within the PythonIDEor by running the gensuitemodule.py module as a standalone program fromthe command line.

The generated output is a package with a number of modules, one for every suiteused in the program plus an __init__ module to glue it all together. ThePython inheritance graph follows the AppleScript inheritance graph, so if aprogram’s dictionary specifies that it includes support for the Standard Suite,but extends one or two verbs with extra arguments then the output suite willcontain a module Standard_Suite that imports and re-exports everythingfrom StdSuites.Standard_Suite but overrides the methods that have extrafunctionality. The output of gensuitemodule is pretty readable, andcontains the documentation that was in the original AppleScript dictionary inPython docstrings, so reading it is a good source of documentation.

The output package implements a main class with the same name as the packagewhich contains all the AppleScript verbs as methods, with the direct object asthe first argument and all optional parameters as keyword arguments. AppleScriptclasses are also implemented as Python classes, as are comparisons and all theother thingies.

The main Python class implementing the verbs also allows access to theproperties and elements declared in the AppleScript class “application”. In thecurrent release that is as far as the object orientation goes, so in the exampleabove we need to use f.get(f.window(1).name) instead of the more Pythonicf.window(1).name.get().

If an AppleScript identifier is not a Python identifier the name is mangledaccording to a small number of rules:

• spaces are replaced with underscores

• other non-alphanumeric characters are replaced with _xx_ where xx isthe hexadecimal character value

• any Python reserved word gets an underscore appended

Python also has support for creating scriptable applications in Python, but Thefollowing modules are relevant to MacPython AppleScript support:

• 38.5. MiniAEFrame — Open Scripting Architecture server support

In addition, support modules have been pre-generated for Finder,Terminal, Explorer, Netscape, CodeWarrior,SystemEvents and StdSuites.

How to open imovie library mac. Released:

Read one-dimensional barcodes and QR codes from Python 2 and 3.

Project description

Read one-dimensional barcodes and QR codes from Python 2 and 3 using thezbar library.

• Pure python
• Works with PIL / Pillow images, OpenCV / numpy ndarrays, and raw bytes
• Decodes locations of barcodes
• No dependencies, other than the zbar library itself
• Tested on Python 2.7, and Python 3.4 to 3.6

The older zbarpackage is stuck in Python 2.x-land.The zbarlight package does notprovide support for Windows and depends upon Pillow.

Installation

The zbarDLLs are included with the Windows Python wheels.On other operating systems, you will need to install the zbar sharedlibrary.

Mac OS X:

Linux:

Install this Python wrapper; use the second form to install dependencies of thecommand-line scripts:

Example usage

The decode function accepts instances of PIL.Image.

It also accepts instances of numpy.ndarray, which might come from loadingimages using OpenCV.

You can also provide a tuple (pixels, width, height), where the image datais eight bits-per-pixel.

The default behaviour is to decode all symbol types. You can look for just yoursymbol types

Bounding boxes and polygons

The blue and pink boxes show rect and polygon, respectively, forbarcodes in pyzbar/tests/qrcode.png (seebounding_box_and_polygon.py).

Windows error message

If you see an ugly ImportError when importing pyzbar on Windowsyou will most likely need the Visual C++ Redistributable Packages for VisualStudio 2013.Install vcredist_x64.exe if using 64-bit Python, vcredist_x86.exe ifusing 32-bit Python.

Contributors

• Alex (@globophobe) - first implementation of barcode locations

License

pyzbar is distributed under the MIT license (see LICENCE.txt).The zbar shared library is distributed under the GNU Lesser GeneralPublic License, version 2.1 (see zbar-LICENCE.txt).

Release historyRelease notifications

0.1.8 How to combine photo libraries.

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0.1.0

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