pamhyr: Start switch to logging for program logs.

src/config.py

@@ -2,6 +2,7 @@
 
 import os
 import pickle
+import logging
 
 from tools import SQL
 
@@ -13,13 +14,15 @@ from Solver.Solvers import solver_type_list
 config_dir = "/.cache/pamhyr/"
 config_file = "config.sqlite3"
 
+logger = logging.getLogger()
+
 class Config(SQL):
     def __init__(self):
         self._version = '0.0.1'
         self.filename = Config.filename()
         self.set_default_value()
 
-        print(self.filename)
+        logging.info(f"Configuration file : {self.filename}")
 
         super(Config, self).__init__(filename = self.filename)
 
@@ -61,10 +64,10 @@ class Config(SQL):
         self.commit()
 
     def _update(self):
-        version = self.execute(f"SELECT value FROM info WHERE key='version'")
+        version = self.execute(f"SELECT value FROM info WHERE key='version'")[0]
 
         if version != self._version:
-            print("update")
+            logger.info(f"Configuration file update from {version} to {self._version}...")
 
     def _load_solver(self):
         self._solvers = []