Inputs interface works with pytests

src/feature_creation/feature_space/FeatureSpace.cpp

src/python/py_binding_cpp_def/bindings_docstring_keyed.cpp

src/python/py_interface/__init__.py

src/python/py_interface/get_solver.py

src/python/py_interface/import_dataframe.py

tests/pytest/sisso.json

tests/pytest/test_classification/test_classification.py

...s/pytest/test_descriptor_identifier/test_log_regressor.py

tests/pytest/test_descriptor_identifier/test_regressor.py

...feature_creation/test_feature_space/test_feature_space.py

tests/pytest/test_param.py

tests/pytest/test_sisso.py