Yurttas/PL/SL/python/docs/core-python-programming/doc/16/ref/expressions.html
5. Expressions
This chapter explains the meaning of the elements of expressions in Python.
Syntax Notes: In this and the following chapters, extended BNF notation will be used to describe syntax, not lexical analysis. When (one alternative of) a syntax rule has the form
name: othername
and no semantics are given, the semantics of this form of nameare the same as for othername.
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