add db.

ml_swissknife/__init__.py

@@ -1 +1 @@
-__version__ = "0.1.15"
+__version__ = "0.1.16"

ml_swissknife/db_utils.py

@@ -0,0 +1,54 @@
+# MIT License
+#
+# Copyright (c) 2023 Yann Dubois
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+# TODO: this should be loaded from database.helpers but streamlit doesn't like importing from another
+#   directory (even if it's in the sys path)
+import sqlite3
+from contextlib import contextmanager
+
+
+@contextmanager
+def create_connection(db_file):
+    """Create a database connection to a SQLite database """
+    conn = None
+    try:
+        conn = sqlite3.connect(db_file)
+        print(f"Connected to {db_file} SQLite")
+        yield conn
+    except sqlite3.Error as e:
+        print("Failed to connect with sqlite3 database", e)
+    finally:
+        if conn:
+            conn.close()
+
+
+def create_table(conn, create_table_sql):
+    """Create a table from the create_table_sql statement
+    :param conn: Connection object
+    :param create_table_sql: a CREATE TABLE statement
+    :return:
+    """
+    try:
+        c = conn.cursor()
+        c.execute(create_table_sql)
+    except sqlite3.Error as e:
+        print(e)