Problems P1-P7
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
These seven problems are introduced studied in the paper:

Izzo, Dario, Francesco Biscani, and Alessio Mereta. "Differentiable genetic programming." 
European Conference on Genetic Programming. Springer, 2017.

.. autofunction:: dcgpy.generate_P1
.. autofunction:: dcgpy.generate_P2
.. autofunction:: dcgpy.generate_P3
.. autofunction:: dcgpy.generate_P4
.. autofunction:: dcgpy.generate_P5
.. autofunction:: dcgpy.generate_P6
.. autofunction:: dcgpy.generate_P7