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Partial evaluation in Python


Partial evaluation is a powerful optimization technique that allows you to use the strengths of Python (expressive, fast runtime), and avoid it's weaknesses (slow interpretation). It uses information available at run-time to generate specialized program code that runs faster than the generic one. Partial evaluation has a lot of successful applications, but is not widely used in the Python community.

The talk will focus on:

  • what is partial evaluation
  • simple example of partial evaluation, it's analysis and benchmark
  • when to use partial evaluation
  • real-world example: 10x speedup of an OLAP calculation engine
  • practical advice, problems, working around them
  • partial evaluation library for Python


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