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2
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The default Python prompt of the interactive shell. Often seen for code examples which can be executed interactively in the interpreter.
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3
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The default Python prompt of the interactive shell when entering code for an indented code block or within a pair of matching left and right delimiters (parentheses, square brackets or curly braces).
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4
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A tool that tries to convert Python 2.x code to Python 3.x code by handling most of the incompatibilites which can be detected by parsing the source and traversing the parse tree.
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5
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2to3 is available in the standard library as :mod:`lib2to3`; a standalone entry point is provided as :file:`Tools/scripts/2to3`. See :ref:`2to3-reference`.
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6
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Abstract Base Classes (abbreviated ABCs) complement :term:`duck-typing` by providing a way to define interfaces when other techniques like :func:`hasattr` would be clumsy. Python comes with many built-in ABCs for data structures (in the :mod:`collections` module), numbers (in the :mod:`numbers` module), and streams (in the :mod:`io` module). You can create your own ABC with the :mod:`abc` module.
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7
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A value passed to a function or method, assigned to a named local variable in the function body. A function or method may have both positional arguments and keyword arguments in its definition. Positional and keyword arguments may be variable-length: ``*`` accepts or passes (if in the function definition or call) several positional arguments in a list, while ``**`` does the same for keyword arguments in a dictionary.
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8
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Any expression may be used within the argument list, and the evaluated value is passed to the local variable.
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9
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A value associated with an object which is referenced by name using dotted expressions. For example, if an object *o* has an attribute *a* it would be referenced as *o.a*.
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10
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Benevolent Dictator For Life, a.k.a. `Guido van Rossum <http://www.python.org/~guido/>`_, Python's creator.
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