object Archives - Petamind https://petaminds.com/tag/object/ A.I, Data and Software Engineering Tue, 05 Oct 2021 06:08:04 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://petaminds.com/wp-content/uploads/2019/09/ic_launcher.png object Archives - Petamind https://petaminds.com/tag/object/ 32 32 Advanced Python: Object operations and comparisons https://petaminds.com/advanced-python-object-operations-and-comparisons/ https://petaminds.com/advanced-python-object-operations-and-comparisons/#respond Wed, 22 Jul 2020 22:53:16 +0000 https://petaminds.com/?p=2536 In many cases, it is convenient to perform mathematical operations on objects rather than numerical values. Python classes have the ability to emulate the behaviour of numeric values to support operations like addition and subtraction. You can override many more to support number-like functionality. Numeric functions In the following table, the right column contains expressions that cause these […]

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]]> https://petaminds.com/advanced-python-object-operations-and-comparisons/feed/ 0 Advanced Python: classes String and computed attribute https://petaminds.com/advanced-python-classes-string-and-computed-attribute/ https://petaminds.com/advanced-python-classes-string-and-computed-attribute/#respond Wed, 15 Jul 2020 02:48:33 +0000 https://petaminds.com/?p=2448 This article demonstrates more advanced features of Python classes and their customisation. Specifically, how enum objects are created, class to strings, and computed attribute. Class string values A string is typically an informal representation of the object. However, it’s just a nicely in human-readable form. Python provides 2 common methods, i.e. str() and repr(). We can customise the […]

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]]> https://petaminds.com/advanced-python-classes-string-and-computed-attribute/feed/ 0 Determine the sizes of python objects https://petaminds.com/determine-the-sizes-of-python-objects/ https://petaminds.com/determine-the-sizes-of-python-objects/#respond Fri, 29 Mar 2019 02:25:42 +0000 https://petaminds.com/?p=1593 When working with data structures, you may want to analyse the space complexity of a particular object. For example, you want to compare the size of a sparse matrix and a dense matrix which represent the same data. With python, “Just use sys.getsizeof” is not a complete answer. It does work for builtin objects directly, but it […]

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