openvinotoolkit/openvino

Extend Python API with a new `model.reshape()` overload

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#18,347 opened on Jul 3, 2023

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category: Python APIgood first issueno_stale

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Description

Context

Currently there are multiple ways to reshape model inputs in Python API. They are defined as bindings to C++ code.

A new way to reshape has been suggested - implicit input reshaping with a list of input shapes. An example of new, desired overload/Python API function:

  1. model has three inputs: A, B and C
  2. model is being reshaped with a list of shapes: model.reshape([[2,2], [1, 3, 224, 244], [10]])
  3. the given shapes are assigned to respective inputs: A.shape = [2, 2] B.shape = [1, 3, 244, 244] C.shape = [10]

Python API model binding needs to be extended with a new overload which will add this functionality.

What needs to be done?

  1. Add a new overload for model.reshape in model C++ bindings
  2. Add tests for the new functionality in the correct test file - test_model.py
  3. Submit a PR
  4. Wait for review

Resources

Contact points

@p-wysocki @jiwaszki @akuporos

Don't hesitate to reach out, we're here to help!

Ticket: 110444

Contributor guide

Research direction
Review the existing model.reshape bindings in C++ and the corresponding tests. Then implement the new overload that accepts a list of input shapes and add tests.
Tech stack
pythoncpp
Domain
backendmachine learning
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitPythonC++
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80