Understanding the main method of python [duplicate]

The Python approach to “main” is almost unique to the language(*). The semantics are a bit subtle. The __name__ identifier is bound to the name of any module as it’s being imported. However, when a file is being executed then __name__ is set to “__main__” (the literal string: __main__). This is almost always used to separate the portion of code which should … Read more

Understanding The Modulus Operator %

(This explanation is only for positive numbers since it depends on the language otherwise) Definition The Modulus is the remainder of the euclidean division of one number by another. % is called the modulo operation. For instance, 9 divided by 4 equals 2 but it remains 1. Here, 9 / 4 = 2 and 9 % 4 = 1. In your example: 5 divided by 7 gives 0 but it … Read more

What is a MIME type?

A MIME type is a label used to identify a type of data. It is used so software can know how to handle the data. It serves the same purpose on the Internet that file extensions do on Microsoft Windows. So if a server says “This is text/html” the client can go “Ah, this is … Read more

When is K 1024 and when is it 1000?

4 If you really care to distinguish between powers of two and powers of ten, you should read this: https://en.wikipedia.org/wiki/Binary_prefix. Using powers of two interchangeably with metric powers of ten was a given in the early days of computers (and is still used by many systems), but as time goes on and we begin to … Read more

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