From b02c6c12528d033f7470b80f4beea97995f7a4c2 Mon Sep 17 00:00:00 2001
From: Fabio Scotto di Santolo <fabio.scottodisantolo@gmail.com>
Date: Thu, 1 Jul 2021 19:46:46 +0200
Subject: [PATCH] Gestione dei database con la struttura with

---
 database/__init__.py |  0
 database/main.py     | 42 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+)
 create mode 100644 database/__init__.py
 create mode 100644 database/main.py

diff --git a/database/__init__.py b/database/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/database/main.py b/database/main.py
new file mode 100644
index 0000000..3239b68
--- /dev/null
+++ b/database/main.py
@@ -0,0 +1,42 @@
+class FakeCursor:
+    pass
+
+
+class FakeConnection:
+    def __init__(self, configuration: dict) -> None:
+        self.__configuration = configuration
+
+    def cursor(self):
+        return FakeCursor()
+
+
+class UseDatabase:
+    def __init__(self, config: dict) -> None:
+        self.__configuration = config
+
+    def __enter__(self) -> 'cursor':
+        print("Initializing DB connection...")
+        self.__connection = FakeConnection(self.__configuration)
+        self.__cursor = self.__connection.cursor()
+        return self.__cursor
+
+    def __exit__(self, exc_type, exc_val, exc_tb) -> None:
+        """
+        Python call this method when close resources
+        :param exc_type:
+        :param exc_val:
+        :param exc_tb:
+        :return:
+        """
+        print("...Close resources")
+        print(f"{exc_type=}, {exc_val=}, {exc_tb=}")
+
+
+def main():
+    with UseDatabase({}) as my_cursor:
+        print("Execute 'with' body")
+        print(f"{my_cursor=}")
+
+
+if __name__ == '__main__':
+    main()