In lexical scoping (or lexical scope Also called static scoping or static scope), if a variable name's scope is a certain block, then its scope is the program text of the block definition Within that block's text, the variable name exists, and is bound to the variable's value, but outside. That is, c11 introduced the keyword _thread_local within an existing set of reserved words (those with a certain prefix), and then used a separate facility (macro processing) to allow its use as if it were a new keyword without any prefixing, while c++11 introduce the keyword thread_local despite this not being an existing reserved word. Python was designed to be a highly readable language [1] it has a relatively uncluttered visual layout and uses english keywords frequently where other languages use punctuation
Python aims to be simple and consistent in the design of its syntax, encapsulated in the mantra there should be one— and preferably only one —obvious way to do it, from the zen of python The concept allows storage of data that appears to be global in a system with separate threads On the other hand, if a system can provide at least. While the term can refer to global variables, it is primarily used in the context of nested and anonymous functions where some variables can be in neither the local nor the global scope. This applies to all kinds of variables, including local variables, fields of objects, and array elements Likewise when calling a function
The default name resolution rules can be overridden with the global or nonlocal (in python 3) keywords In the below code, the global x declaration in g means that x resolves to the global variable.
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