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oop - Why do you need explicitly have the self argument in a Python . . . By making the self reference explicit, you're free to refer to any object by that self reference Also, such a way of playing with classes at runtime is harder to do in the more static languages - not that's it's necessarily good or bad It's just that the explicit self allows all this craziness to exist
What is the purpose of the `self` parameter? Why is it needed? For a language-agnostic consideration of the design decision, see What is the advantage of having this self pointer mandatory explicit? To close debugging questions where OP omitted a self parameter for a method and got a TypeError, use TypeError: method () takes 1 positional argument but 2 were given instead If OP omitted self in the body of the method and got a NameError, consider How can
Python self keyword - Stack Overflow 9 First, Python's self is not a keyword, it's a coding convention, the same as Python's cls Guido has written a really detailed and valuable article about the origin of Python's support for class, and in that article, Guido explains why use self and cls, and why they are necessary
sql - Explanation of self-joins - Stack Overflow A self join is a join of a table with itself A common use case is when the table stores entities (records) which have a hierarchical relationship between them
How can I generate a self-signed SSL certificate using OpenSSL? The W3C's WebAppSec Working Group is starting to look at the issue See, for example, Proposal: Marking HTTP As Non-Secure How to create a self-signed certificate with OpenSSL The commands below and the configuration file create a self-signed certificate (it also shows you how to create a signing request)