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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
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
SSL: CERTIFICATE_VERIFY_FAILED certificate verify failed : self signed . . . 7 self signed certificate in certificate chain means that certificate chain validation has failed Your script does not trust the certificate or one of its issuers For more information see Beginning with SSL for a Platform Engineer The answer from Tzane had most of what you need But it looks like you also might want to know WHAT certificate
When to use self, self, mut self in methods? - Stack Overflow Self is an alias for the type that the impl block is for The rules of ownership and borrowing apply to self as they apply to any other parameter (see e g this answer) Examples of when to use which here and here Examples of when we should take ownership here, although the answers don't provide code examples but just point to the docs self is not just used as the first parameter of a method
git - SSL certificate problem: self signed certificate in certificate . . . The reason was an SSL certificate problem: 'self-signed certificate in certificate chain '" Protected question To answer this question, you need to have at least 10 reputation on this site (not counting the association bonus) The reputation requirement helps protect this question from spam and non-answer activity
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)