Quippy is a parser for quantum circuit descriptions produces by Quipper. Specifically, Quipper can output an ASCII description of the circuit, which can then be parsed by Quippy.
Quippy provides a default parser in quippy.parser that will parse given text as:
import quippy parsed:quippy.Start = quippy.parser().parse(text)
The parsed format uses an quippy.Start object to represent the Quipper circuit by default. This is a nice Object representation of the circuit the Abstract Syntax Tree is directly transformed to by quippy.transformer.QuipperTransformer. The resulting parsed object will have as type a Start object which will make the structure of the parse tree much clearer. If you do no wish to use the included transformer but would rather have a general AST then pass:
quippy.parser(transformer=None)
We use the optional static typing provided in PEP 484 to provide types for the returned objects, this was included in Python 3.5 or higher. Python 3.6 or higher is recommended.