title: python: syntactic sugar - is it official? where is it described in documentation?
body: <p>I often see notes that e.g. <code>[]</code>is syntactic sugar for <code>_getitem_</code> (<a href="https://stackoverflow.com/questions/46176656/why-how-does-pandas-use-square-brackets-with-loc-and-iloc">Why/How does Pandas use square brackets with .loc and .iloc?</a>), but neither by web search, not here on SO, not in glossary in <a href="https://docs.python.org/3/glossary.html" rel="nofollow noreferrer">docs.python.org</a> I could find list of all sugars for Python. Are sugars official or left to each implementation specifics?</p>