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The concepts and ideas here are covered with several examples to help connect theory to practice. Why was this written? We expect that for the interested reader, this book would be among the first of many books or blogs that you would read on Python. There is also a list of references towards the end of the book which we trust you may find useful.
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A PDF file is organized using ASCII characters, except for certain elements that may have binary content. The file starts with a header containing a magic number (as a readable string) and the version of the format, for example %PDF-1.7. The format is a subset of a COS ("Carousel" Object Structure) format. [23]
For example, one could define a dictionary having a string "toast" mapped to the integer 42 or vice versa. The keys in a dictionary must be of an immutable Python type, such as an integer or a string, because under the hood they are implemented via a hash function. This makes for much faster lookup times, but requires keys not change.
One characteristic feature of the STAR File format is that data names (keys in key–value pairs) start with the underscore. They are separated from data values only by white space, for example: _format "STAR File" _first_published 1991 The format was designed to provide a concise syntax for tabular data. The construct for this is called loop.
Python is a high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. [33] Python is dynamically type-checked and garbage-collected. It supports multiple programming paradigms, including structured (particularly procedural), object-oriented and functional ...
The Python programming language has a builtin plistlib module to read and write plist files, in Apple's XML or in binary (since Python 3.4). [28] ProperTree is a cross-platform editor that makes use of this library.
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