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This topic is essential knowledge for every user of UNIX, Linux, Solaris, OS X, and BSD. Furthermore, the LPI certification contains tricky questions about this. If you want to find files with a certain filename using the command line then use either the find or the locate commands. But if...
Frank Hofmann
Once upon a time, not so long ago, a word caught my ear. Lambda. That struck a chord, remembering the good old days of playing Half-Life as a kid. Little did I know what AWS Lambda was, and how incredibly awesome it is. If you're intrigued, stick around. I'll only...
Adnan Rahic
A Python generator is a function that produces a sequence of results. It works by maintaining its local state, so that the function can resume again exactly where it left off when called subsequent times. Thus, you can think of a generator as something like a powerful iterator. The state...
Scott Robinson
Different file systems in the UNIX/Linux universe allow a variety of entries such as regular files, directories, sockets, named pipes, and links. In this article I will explain to you what links are, which types of links exist, how to create a symbolic link, and how to detect broken...
On many occasions, while working with the scikit-learn library, you'll need to save your prediction models to file, and then restore them in order to reuse your previous work to: test your model on new data, compare multiple models, or anything else. This saving procedure is also known as object...
Mihajlo Pavloski
There arises many times in the development of modern web applications where the business requirements inherently describe relationships that are recursive. One well known example of such a business rule is in the description of employees and their relationship to their managers, which are also employees. Notice the circular nature...
Adam McQuistan
Flask is a great choice for building web applications in a modular way using Python. Unlike Django and other analogues like Ruby on Rails, Flask is a micro-framework. This means it includes only what is necessary to do core web development, leaving the bulk of choices beyond that minimal subset...
Tendai Mutunhire
When you start a program on your machine, it runs in its own "bubble" which is completely separate from other programs that are active at the same time. This "bubble" is called a process, and comprises everything which is needed to manage this program call. For...
A CSV (Comma Separated Values) file is a file that uses a certain formatting for storing data. This file format organizes information, containing one record per line, with each field (column) separated by a delimiter. The delimiter most commonly used is usually a comma. This format is so common that...
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