Основа для оформления накладных

App/Waybill/db/DBconnect.py

@@ -0,0 +1,34 @@
+import pymysql
+from pymysql.err import *
+class DBContextManager:
+    def __init__(self, db_config : dict):
+        self.db_config = db_config
+        self.connection = None
+        self.cursor = None
+
+    def __enter__(self):
+        try:
+            self.connection = pymysql.connect(
+                host=self.db_config['host'],
+                port=self.db_config['port'],
+                user=self.db_config['user'],
+                password=self.db_config['password'],
+                db=self.db_config['db']
+            )
+            self.cursor = self.connection.cursor()
+            return self.cursor
+        except (OperationalError, KeyError) as err:
+            print(err.args)
+            return None
+    
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        if self.connection and self.cursor:
+            if exc_type:
+                print(exc_type, '\n', exc_val)
+                self.connection.rollback()
+            else:
+                self.connection.commit()
+            self.cursor.close()
+            self.connection.close()
+        return True
+