added sql tutorial

database.py

@@ -0,0 +1,37 @@
+import sqlite3
+
+CREATE_BEANS_TABLE = "CREATE TABLE IF NOT EXISTS beans (id INTEGER PRIMARY KEY, name TEXT, method TEXT, rating INTEGER);"
+INSERT_BEAN = "INSERT INTO beans (name, method, rating) VALUES(?, ?, ?);"
+
+GET_ALL_BEANS = "SELECT * FROM beans;"
+
+GET_BEANS_BY_NAME = "SELECT * FROM beans WHERE name = ?;"
+
+GET_BEST_PREPARATION_FOR_BEAN ="""
+SELECT * FROM beans
+WHERE name = ?
+ORDER BY rating DESC
+LIMIT 1;"""
+
+def connect():
+    return sqlite3.connect("data.db")
+
+def create_tables(connection):
+    with connection:
+        connection.execute(CREATE_BEANS_TABLE)
+
+def add_bean(connection, name, method, rating):
+    with connection:
+        connection.execute(INSERT_BEAN, (name, method, rating))
+
+def get_all_beans(connection):
+    with connection:
+        return connection.execute(GET_ALL_BEANS).fetchall()
+
+def get_beans_by_name(connection, name):
+    with connection:
+        return connection.execute(GET_BEANS_BY_NAME, (name,)).fetchall()
+
+def get_best_preparation_for_bean(connection, name):
+    with connection:
+        return connection.execute(GET_BEST_PREPARATION_FOR_BEAN, (name,)).fetchone()

sql_beans_tutorial.py

@@ -0,0 +1,55 @@
+import database
+
+MENU_PROMPT = """
+Choose option:
+
+1. Add a new bean
+2. See all beans
+3. Find a bean by name
+4. See best preparation
+5. Exit
+"""
+
+def menu():
+  connection = database.connect()
+  database.create_tables(connection)
+
+  while (user_input := input(MENU_PROMPT)) != "5":
+      if user_input == "1":
+          prompt_add_new_bean(connection)
+      elif user_input == "2":
+          prompt_see_all_beans(connection)
+      elif user_input == "3":
+          prompt_find_bean(connection)
+      elif user_input == "4":
+          prompt_find_best_method(connection)
+      else:
+          print("Invalid input")
+
+def prompt_add_new_bean(connection):
+    name = input("Enter bean name: ")
+    method = input("Enter preparation method: ")
+    rating = int(input("Enter rating: "))
+
+    database.add_bean(connection, name, method, rating)
+
+def prompt_see_all_beans(connection):
+   beans = database.get_all_beans(connection)
+   for bean in beans:
+     print(f"{bean[1]} {bean[2]} - {bean[3]}/ 100 ")
+
+def prompt_find_bean(connection):
+    name = input("Enter bean name to find: ")
+    beans = database.get_beans_by_name(connection, name)
+
+    for bean in beans:
+        print(f"{bean[1]} {bean[2]} - {bean[3]}/ 100")
+
+def prompt_find_best_method(connection):
+    name = input("Enter bean name to find: ")
+    best_method = database.get_best_preparation_for_bean(connection, name)
+
+    print(f"The best bean preparation for {name} is: {best_method[2]}.")
+
+
+menu()