Create app.python

app.python

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+from flask import Flask,render_template,request,url_for,redirect
+
+import mysql.connector
+from mysql.connector import Error
+from werkzeug.security import generate_password_hash,check_password_hash
+app=Flask(__name__)
+
+#mysql db connection configure
+db_config={
+    'host':'localhost',
+    'user':'root',
+    'password':'root',
+    'database':'student'
+}
+#helper function to get a db
+def get_db_connection():
+    try:
+        connection=mysql.connector.connect(**db_config)
+        return connection
+    except Error as e:
+        print("Error while connecting to mysql",e)
+        return None
+
+@app.route("/")
+def Dashboard():
+    return "<p>Hello ,World</p>"
+
+@app.route("/login",methods=['GET','POST'])
+def login():
+    if request.method =="POST":
+        username=request.form['username']
+        password=request.form['password']
+
+        conn=get_db_connection()
+        if conn:
+            cursor=conn.cursor()
+            cursor.execute("SELECT*FROM users WHERE username=%s",(username,))
+            user=cursor.fetchone()
+            conn.close()
+            if user and check_password_hash(user[4],password):
+                return redirect(url_for('Dashboard'))
+            else:
+                print("Invalid username or password")
+
+    return render_template('login.html')
+
+@app.route('/register',methods=['GET','POST'])
+def register():
+    if request.method=="POST":
+        username=request.form['username']
+        address=request.form['address']
+        student_id=request.form['student_id']
+        password=request.form['password']
+        email=request.form['email']
+        print(password)
+        print(email)
+        hash_password=generate_password_hash(password)
+        print(hash_password)
+        #connect to db
+        conn=get_db_connection()
+        if conn:
+            cursor=conn.cursor()
+            cursor.execute("SELECT*FROM users WHERE username=%s",(username,))
+            existing_user=cursor.fetchone()
+            if existing_user:
+                print("username already exists.please choose another one.")
+                conn.close()
+                return redirect(url_for('register'))
+            cursor.execute("insert into users(username,address,student_id,password,email) values(%s,%s,%s,%s,%s)",(username,address,student_id,hash_password,email))
+            conn.commit()
+            cursor.close()
+            conn.close()
+        return redirect(url_for('login'))
+    return render_template('register.html')
+
+#dynamic routing
+#string route(defauly type)
+@app.route('/user/<string:username>')
+def show_user(username):
+    return f"Hello,{username}"
+
+@app.route('/user_id/<int:user_id>')
+def show_user_by_id(user_id):
+    return f'user id is {user_id}'
+
+@app.route('/price/<float:price>')
+def show_price(price):
+    return f'The price is{price}'
+
+@app.route('/path/<path:subpath>')
+def show_path(subpath):
+    return f"The path is {subpath}"
+
+
+@app.route('/uuid/<uuid:item_id>')
+def show_uuid(item_id):
+    return f"The uuid is {item_id}"
+
+
+
+
+
+app.run(debug=True)