Don't delete previous directory (useless)

src/python/antares_xpansion/full_run_driver.py

@@ -1,13 +1,13 @@
-
-from typing import List
+import os
 import subprocess
 import sys
+from pathlib import Path
+from typing import List
+
 from antares_xpansion.benders_driver import BendersDriver
-from antares_xpansion.problem_generator_driver import ProblemGeneratorDriver
 from antares_xpansion.logger import step_logger
+from antares_xpansion.problem_generator_driver import ProblemGeneratorDriver
 from antares_xpansion.study_output_cleaner import StudyOutputCleaner
-import os
-from pathlib import Path
 
 
 class FullRunDriver:
@@ -29,9 +29,6 @@ def prepare_drivers(self, output_path: Path,
         """
             problem generation step : getnames + lp_namer
         """
-        # Pb Gen pre-step
-        self.problem_generation_driver.clear_old_log()
-
         self.problem_generation_driver.is_relaxed = problem_generation_is_relaxed
 
         self.keep_mps = benders_keep_mps

src/python/antares_xpansion/problem_generator_driver.py

@@ -3,7 +3,6 @@
 """
 
 import os
-import shutil
 import subprocess
 import sys
 from dataclasses import dataclass
@@ -66,26 +65,30 @@ def launch(self, output_path: Path, is_relaxed: bool):
         """
             problem generation step : getnames + lp_namer
         """
-        self.clear_old_log()
+        self.logger.info("Problem Generation")
         self.output_path = output_path
 
+        self.create_lp_dir()
+
         self.is_relaxed = is_relaxed
         self._lp_step()
 
     def set_output_path(self, output_path):
-        self._output_path = output_path
-        self.xpansion_output_dir = output_path.parent / \
-                                   (output_path.stem + "-Xpansion")
-        self._lp_path = os.path.normpath(
-            os.path.join(self.xpansion_output_dir, 'lp'))
+
+        if output_path.exists():
+            self._output_path = output_path
+            self.xpansion_output_dir = output_path.parent / \
+                                       (output_path.stem + "-Xpansion")
+            os.makedirs(self.xpansion_output_dir)
+            self._lp_path = os.path.normpath(
+                os.path.join(self.xpansion_output_dir, 'lp'))
+        else:
+            raise ProblemGeneratorDriver.OutputPathError(
+                f"{output_path} not found")
 
     def get_output_path(self):
         return self._output_path
 
-    def clear_old_log(self):
-        if (os.path.isfile(str(self.lp_namer_exe_path) + '.log')):
-            os.remove(str(self.lp_namer_exe_path) + '.log')
-
     def _lp_step(self):
         """
             copies area and interco files and launches the lp_namer
@@ -101,8 +104,6 @@ def _lp_step(self):
                 "ERROR: exited lpnamer with status %d" % returned_l.returncode)
 
     def create_lp_dir(self):
-        if os.path.isdir(self._lp_path):
-            shutil.rmtree(self._lp_path)
         os.makedirs(self._lp_path)
 
     def lp_namer_options(self):