s3: python-iii: flask-231206

semester-3/python-iii/flask-231206/.python-version

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+[email protected]

semester-3/python-iii/flask-231206/README.md

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+# mysqlexample
+
+Describe your project here.

semester-3/python-iii/flask-231206/pyproject.toml

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+[project]
+name = "mysqlexample"
+version = "0.1.0"
+description = "Add your description here"
+authors = [
+    { name = "pan93412", email = "[email protected]" }
+]
+dependencies = [
+    "sqlalchemy>=2.0.23",
+    "mysql-connector-python>=8.2.0",
+]
+readme = "README.md"
+requires-python = ">= 3.8"
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.rye]
+managed = true
+dev-dependencies = [
+    "black>=23.11.0",
+]
+
+[tool.hatch.metadata]
+allow-direct-references = true

semester-3/python-iii/flask-231206/requirements-dev.lock

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+# generated by rye
+# use `rye lock` or `rye sync` to update this lockfile
+#
+# last locked with the following flags:
+#   pre: false
+#   features: []
+#   all-features: false
+
+-e file:.
+black==23.11.0
+click==8.1.7
+mypy-extensions==1.0.0
+mysql-connector-python==8.2.0
+packaging==23.2
+pathspec==0.11.2
+platformdirs==4.1.0
+protobuf==4.21.12
+sqlalchemy==2.0.23
+typing-extensions==4.8.0

semester-3/python-iii/flask-231206/requirements.lock

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+# generated by rye
+# use `rye lock` or `rye sync` to update this lockfile
+#
+# last locked with the following flags:
+#   pre: false
+#   features: []
+#   all-features: false
+
+-e file:.
+mysql-connector-python==8.2.0
+protobuf==4.21.12
+sqlalchemy==2.0.23
+typing-extensions==4.8.0

semester-3/python-iii/flask-231206/src/mysqlexample/01-create-db-connector.py

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+import os
+from mysql.connector import connection
+
+# Connect to MySQL server
+with connection.MySQLConnection(user='root', password=os.environ["MYSQL_PASSWORD"],
+                                 host='localhost') as cnx:
+    cursor = cnx.cursor()
+
+    # Get the version of the MySQL server
+    cursor.execute("SELECT VERSION()")
+    result = cursor.fetchone()
+    print(result)
+
+    # Create a database if not exist.
+    cursor.execute("CREATE DATABASE IF NOT EXISTS example_c DEFAULT CHARSET utf8 COLLATE utf8_general_ci")
+
+    cnx.commit()

semester-3/python-iii/flask-231206/src/mysqlexample/01-create-db-sqlalchemy.py

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+import os
+from sqlalchemy import String, create_engine, select, text, func
+
+# Create a connection to the database
+engine = create_engine(f'mysql+mysqlconnector://root:{os.environ["MYSQL_PASSWORD"]}@localhost')
+
+with engine.connect() as connection:
+    # Get the current version of the MySQL server
+    result = connection.execute(select(func.version(type_=String())))
+    print(result.first())
+
+    # Create a database if not exist.
+    connection.execute(text("CREATE DATABASE IF NOT EXISTS example_sa DEFAULT CHARSET utf8 COLLATE utf8_general_ci"))
+    connection.commit()

semester-3/python-iii/flask-231206/src/mysqlexample/02-create-table-connector.py

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+import os
+from mysql.connector import connection
+# Connect to MySQL server
+with connection.MySQLConnection(user='root', password=os.environ["MYSQL_PASSWORD"],
+                                 host='localhost', database='example_c') as cnx:
+
+    cursor = cnx.cursor()
+
+    # Create a stu_data table, with:
+    #     stu_no as primary key
+    #     stu_name
+    #     stu_class
+    #     stu_phone
+
+    # Create a table if not exist.
+    cursor.execute((
+        "CREATE TABLE IF NOT EXISTS stu_data ("
+        "stu_no VARCHAR(10) PRIMARY KEY,"
+        "stu_name VARCHAR(255) NOT NULL,"
+        "stu_class VARCHAR(255) NOT NULL,"
+        "stu_phone VARCHAR(10) NOT NULL)"
+    ))
+
+    cnx.commit()

semester-3/python-iii/flask-231206/src/mysqlexample/03-insert-data-connector.py

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+import os
+from mysql.connector import connection
+# Connect to MySQL server
+with connection.MySQLConnection(user='root', password=os.environ["MYSQL_PASSWORD"],
+                                 host='localhost', database='example_c') as cnx:
+    cursor = cnx.cursor()
+
+    # Insert data into stu_data table
+    cursor.executemany(
+        "INSERT INTO stu_data (stu_no, stu_name, stu_class, stu_phone) VALUES (%s, %s, %s, %s)",
+        [
+            # 15 mock data
+            ("C111156101", "王小明", "智商二甲", "0912345678"),
+            ("C111156102", "陳小華", "智商二甲", "0913579246"),
+            ("C111156103", "林小美", "智商二甲", "0912345678"),
+            ("C111156104", "張小強", "智商二甲", "0913579246"),
+            ("C111156105", "李大雄", "智商二甲", "0912345678"),
+            ("C111156106", "黃小琪", "智商二甲", "0913579246"),
+            ("C111156107", "吳小菁", "智商二甲", "0912345678"),
+            ("C111156108", "劉小偉", "智商二甲", "0913579246"),
+            ("C111156109", "蔡小娟", "智商二甲", "0912345678"),
+            ("C111156110", "許小儒", "智商二甲", "0913579246"),
+            ("C111156111", "林小雨", "智商二甲", "0912345678"),
+            ("C111156112", "陳小風", "智商二甲", "0913579246"),
+            ("C111156113", "黃小雲", "智商二甲", "0912345678"),
+            ("C111156114", "張小翰", "智商二甲", "0913579246"),
+            ("C111156115", "王小明", "智商二甲", "0912345678"),
+        ]
+    )
+    cnx.commit()
+
+    # Get all datas from stu_data table
+    cursor.execute("SELECT * FROM stu_data")
+    result = cursor.fetchall()
+    print(result)

semester-3/python-iii/flask-231206/src/mysqlexample/03-insert-data-sqlalchemy.py

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+import os
+from sqlalchemy import Column, MetaData, String, Table, create_engine, insert, select
+
+# Create a connection to the database
+engine = create_engine(f'mysql+mysqlconnector://root:{os.environ["MYSQL_PASSWORD"]}@localhost/example_sa')
+
+# Create a metadata with the tables.
+metadata = MetaData()
+
+# Create a stu_data table, with:
+#     stu_no as primary key
+#     stu_name
+#     stu_class
+#     stu_phone
+Student = Table(
+    "students",
+    metadata,
+    Column("stu_no", String(10), primary_key=True),
+    Column("stu_name", String(255), nullable=False),
+    Column("stu_class", String(255), nullable=False),
+    Column("stu_phone", String(10), nullable=False),
+)
+
+with engine.connect() as connection:
+    # Create a table if not exist.
+    metadata.create_all(engine)
+
+    # Insert data into stu_data table
+    stmt = insert(Student).values([
+        {"stu_no": "C111156101", "stu_name": "王小明", "stu_class": "智商二甲", "stu_phone": "0912345678"},
+        {"stu_no": "C111156102", "stu_name": "陳小華", "stu_class": "智商二甲", "stu_phone": "0913579246"},
+        {"stu_no": "C111156103", "stu_name": "林小美", "stu_class": "智商二甲", "stu_phone": "0912345678"},
+        {"stu_no": "C111156104", "stu_name": "張小強", "stu_class": "智商二甲", "stu_phone": "0913579246"},
+        {"stu_no": "C111156105", "stu_name": "李大雄", "stu_class": "智商二甲", "stu_phone": "0912345678"},
+        {"stu_no": "C111156106", "stu_name": "黃小琪", "stu_class": "智商二甲", "stu_phone": "0913579246"},
+        {"stu_no": "C111156107", "stu_name": "吳小菁", "stu_class": "智商二甲", "stu_phone": "0912345678"},
+        {"stu_no": "C111156108", "stu_name": "劉小偉", "stu_class": "智商二甲", "stu_phone": "0913579246"},
+        {"stu_no": "C111156109", "stu_name": "蔡小娟", "stu_class": "智商二甲", "stu_phone": "0912345678"},
+        {"stu_no": "C111156110", "stu_name": "許小儒", "stu_class": "智商二甲", "stu_phone": "0913579246"},
+        {"stu_no": "C111156111", "stu_name": "林小雨", "stu_class": "智商二甲", "stu_phone": "0912345678"},
+        {"stu_no": "C111156112", "stu_name": "陳小風", "stu_class": "智商二甲", "stu_phone": "0913579246"},
+    ])
+    result = connection.execute(stmt)
+    print("Inserted %d rows" % result.rowcount)
+    connection.commit()
+
+    # Get all datas from stu_data table
+    stmt = select(Student)
+    result = connection.execute(stmt)
+    print(result.fetchall())
+

semester-3/python-iii/flask-231206/src/mysqlexample/04-select-data-connector.py

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+import os
+from mysql.connector import connection
+# Connect to MySQL server
+with connection.MySQLConnection(user='root', password=os.environ["MYSQL_PASSWORD"],
+                                 host='localhost', database='example_c') as cnx:
+    cursor = cnx.cursor()
+
+    # 輸入一個學號，查詢該學生的資料
+    stu_no = input("請輸入學號: ")
+
+    # 從資料庫查詢特定資料
+    cursor.execute("SELECT * FROM stu_data WHERE stu_no = %s", (stu_no,))
+
+    result = cursor.fetchone()
+    print(result)

semester-3/python-iii/flask-231206/src/mysqlexample/04-select-data-sqlalchemy.py

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+import os
+from sqlalchemy import Column, MetaData, String, Table, create_engine, insert, select
+from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column, Session
+
+# Create a connection to the database
+engine = create_engine(f'mysql+mysqlconnector://root:{os.environ["MYSQL_PASSWORD"]}@localhost/example_sa')
+
+
+class Base(DeclarativeBase): pass
+
+class Student(Base):
+    __tablename__ = "students"
+
+    stu_no: Mapped[str] = mapped_column(String(10), primary_key=True)
+    stu_name: Mapped[str] = mapped_column(String(255), nullable=False)
+    stu_class: Mapped[str] = mapped_column(String(255), nullable=False)
+    stu_phone: Mapped[str] = mapped_column(String(10), nullable=False)
+
+    def __repr__(self):
+        return f"<Student(stu_no='{self.stu_no}', stu_name='{self.stu_name}', stu_class='{self.stu_class}', stu_phone='{self.stu_phone}')>"
+
+with Session(engine) as session:
+    # Ask user to input a student number
+    stu_no = input("請輸入學號: ")
+
+    student = session.get(Student, stu_no)
+
+    print(student if student else "Not found.")

semester-3/python-iii/flask-231206/src/mysqlexample/05-update-data-with-gui.py

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+import os
+from sqlalchemy import String, create_engine
+from sqlalchemy.exc import SQLAlchemyError
+from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column, Session
+import tkinter
+import tkinter.messagebox
+from tkinter.ttk import Button, Entry, Frame, Label
+
+
+class Base(DeclarativeBase): pass
+
+class Student(Base):
+    __tablename__ = "students"
+
+    stu_no: Mapped[str] = mapped_column(String(10), primary_key=True)
+    stu_name: Mapped[str] = mapped_column(String(255), nullable=False)
+    stu_class: Mapped[str] = mapped_column(String(255), nullable=False)
+    stu_phone: Mapped[str] = mapped_column(String(10), nullable=False)
+
+    def __repr__(self):
+        return f"<Student(stu_no='{self.stu_no}', stu_name='{self.stu_name}', stu_class='{self.stu_class}', stu_phone='{self.stu_phone}')>"
+
+# Create a tkinter window
+window = tkinter.Tk()
+window.title("查詢並修改學生資料")
+
+# Create a connection to the database
+engine = create_engine(f'mysql+mysqlconnector://root:{os.environ["MYSQL_PASSWORD"]}@localhost/example_sa')
+session = Session(engine)
+
+# Allow users to input a student number
+id_input_frame = Frame(window)
+id_input_frame.pack(padx=10, pady=10)
+
+id_input_entry_frame = Frame(id_input_frame)
+id_input_entry_frame.pack()
+stu_no_label = Label(id_input_entry_frame, text="學號")
+stu_no_label.grid(row=0, column=0)
+stu_no_entry = Entry(id_input_entry_frame)
+stu_no_entry.grid(row=0, column=1)
+stu_query_btn = Button(id_input_frame, text="查詢")
+stu_query_btn.pack()
+
+# Show the student data
+stu_data_frame = Frame(window)
+stu_data_frame.pack(padx=10, pady=10)
+stu_input_frame = Frame(stu_data_frame)
+stu_input_frame.pack()
+stu_name_label = Label(stu_input_frame, text="姓名")
+stu_name_label.grid(row=0, column=0)
+stu_name_entry = Entry(stu_input_frame)
+stu_name_entry.grid(row=0, column=1)
+stu_class_label = Label(stu_input_frame, text="班級")
+stu_class_label.grid(row=1, column=0)
+stu_class_entry = Entry(stu_input_frame)
+stu_class_entry.grid(row=1, column=1)
+stu_phone_label = Label(stu_input_frame, text="電話")
+stu_phone_label.grid(row=2, column=0)
+stu_phone_entry = Entry(stu_input_frame)
+stu_phone_entry.grid(row=2, column=1)
+stu_modify_btn_frame = Frame(stu_data_frame)
+stu_modify_btn_frame.pack()
+stu_update_btn = Button(stu_modify_btn_frame, text="修改")
+stu_update_btn.grid(row=0, column=0)
+
+
+current_selected_student: str | None = None
+
+def select() -> None:
+    global current_selected_student
+
+    current_selected_student = stu_no_entry.get()
+    student = session.get(Student, current_selected_student)
+
+    # Write student's value to the entry
+    if student:
+        stu_name_entry.delete(0, tkinter.END)
+        stu_name_entry.insert(0, student.stu_name)
+        stu_class_entry.delete(0, tkinter.END)
+        stu_class_entry.insert(0, student.stu_class)
+        stu_phone_entry.delete(0, tkinter.END)
+        stu_phone_entry.insert(0, student.stu_phone)
+    else:
+        tkinter.messagebox.showinfo("查詢", "查無此學生")
+        current_selected_student = None
+
+
+def update() -> None:
+    global current_selected_student
+
+    if current_selected_student is None:
+        tkinter.messagebox.showerror("修改", "請先查詢學生")
+        return
+
+    student = session.get(Student, current_selected_student)
+
+    try:
+        assert student is not None
+        student.stu_name = stu_name_entry.get()
+        student.stu_class = stu_class_entry.get()
+        student.stu_phone = stu_phone_entry.get()
+        session.commit()
+        tkinter.messagebox.showinfo("修改", "修改成功")
+    except AssertionError:
+        tkinter.messagebox.showerror("修改", "查無此學生")
+    except SQLAlchemyError as e:
+        tkinter.messagebox.showerror("修改", f"修改失敗: {e}")
+
+stu_query_btn.bind("<Button-1>", lambda event: select())
+stu_update_btn.bind("<Button-1>", lambda event: update())
+
+window.mainloop()