Enforce that each synthesizer is unique in benchmark_single_table

[npatki]

Version: 0.8.0 (in development)

Problem Description

Currently, the user can provide synthesizers to benchmark_single_table via the synthesizers or the custom_synthesizers parameters.

import sdgym

sdgym.benchmark_single_table(
    synthesizers=['GaussianCopulaSynthesizer', 'FastMLPreset'],
    custom_synthesizers=[MyCustomSynthesizerClass]
)

It would be good to enforce that each synthesizer the user passes in is unique. Eg. the following would NOT be allowed:

import sdgym

# This should not be allowed
sdgym.benchmark_single_table(
    synthesizers=['GaussianCopulaSynthesizer', 'GaussianCopulaSynthesizer'],
    custom_synthesizers=[MyCustomSynthesizerClass, MyCustomSynthesizerClass]
)

Rationale: The benchmarking framework is designed to work on unique (synthesizer, dataset) pairs. If users want to do multiple iterations, then they can run the script more times.

Expected behavior

Before executing anything else, check to see if the synthesizers are unique. If they are not, throw an error.

sdgym.benchmark_single_table(
    synthesizers=['GaussianCopulaSynthesizer', 'GaussianCopulaSynthesizer'],
    custom_synthesizers=[MyCustomSynthesizerClass, MyCustomSynthesizerClass]
)

BenchmarkingInputError: Synthesizers must be unique. Please remove repeated values in the 'synthesizers' and 'custom_synthesizers' parameters.