Move python files to root folder; remove built docs

miplearn/solvers/pyomo/cplex.py

@@ -0,0 +1,49 @@
+#  MIPLearn: Extensible Framework for Learning-Enhanced Mixed-Integer Optimization
+#  Copyright (C) 2020, UChicago Argonne, LLC. All rights reserved.
+#  Released under the modified BSD license. See COPYING.md for more details.
+
+from pyomo import environ as pe
+from scipy.stats import randint
+
+from .base import BasePyomoSolver
+
+
+class CplexPyomoSolver(BasePyomoSolver):
+    def __init__(self, options=None):
+        """
+        Creates a new CPLEX solver, accessed through Pyomo.
+
+        Parameters
+        ----------
+        options: dict
+            Dictionary of options to pass to the Pyomo solver. For example,
+            {"mip_display": 5} to increase the log verbosity.
+        """
+        super().__init__()
+        self._pyomo_solver = pe.SolverFactory('cplex_persistent')
+        self._pyomo_solver.options["randomseed"] = randint(low=0, high=1000).rvs()
+        self._pyomo_solver.options["mip_display"] = 4
+        if options is not None:
+            for (key, value) in options.items():
+                self._pyomo_solver.options[key] = value
+
+    def _get_warm_start_regexp(self):
+        return "MIP start .* with objective ([0-9.e+-]*)\\."
+
+    def _get_node_count_regexp(self):
+        return "^[ *] *([0-9]+)"
+
+    def _get_threads_option_name(self):
+        return "threads"
+
+    def _get_time_limit_option_name(self):
+        return "timelimit"
+
+    def _get_node_limit_option_name(self):
+        return "mip_limits_nodes"
+
+    def _get_gap_tolerance_option_name(self):
+        return "mip_tolerances_mipgap"
+
+    def set_branching_priorities(self, priorities):
+        raise NotImplementedError