Question

I am new to python and trying to understand the following basic python syntax. Thanks in advance.

foo = self._setup['bar']

Update: fixed the typo in my earlier code segment.

Answer 1

This is not valid Python since python is not a keyword:

>>> foo = python self._setup['bar']
  File "<stdin>", line 1
    foo = python self._setup['bar']
                    ^
SyntaxError: invalid syntax

Valid Python code would look like

foo = self._setup['bar']

which is constructed as follows:

self                     # Get the value of self (typically the current object)
self._setup              # Get the attribute "_setup" of that value
self._setup['bar']       # Get the item "bar" of the attribute value
foo = self._setup['bar'] # Assign the result to the variable foo

These are all very basic constructs. For details, refer to the Python tutorial.