old_contents: # -*- coding: utf-8 -*-
  
  from flask import Blueprint, render_template, current_app, abort, url_for, redirect, request, flash
  from flask_login import login_user, logout_user
  
  bp = Blueprint('perm-admin', __name__, template_folder='templates', static_folder='static')
  
  @bp.route('/')
  def index():
      if not bp.perm.has_perm_admin_logined():
          return redirect(url_for('perm-admin.login'))
  
      render_data = {
          'base_api_url': current_app.config.get('PERM_ADMIN_API_PREFIX'),
          'base_web_url': current_app.config.get('PERM_ADMIN_PREFIX'),
          'debug': current_app.config.get('DEBUG'),
      }
  
      return render_template('/perm-admin/index.html', **render_data)
  
  @bp.route('/login', methods=['GET', 'POST'])
  def login():
      if request.method == 'POST':
          username = request.form['username']
          password = request.form['password']
          if bp.perm.check_perm_admin_auth(username, password):
              bp.perm.login_perm_admin()
              return redirect(url_for('perm-admin.index'))
          else:
              flash(u'Invalid Password', 'error')
              return redirect(url_for('perm-admin.login'))
      return render_template('/perm-admin/login.html')
  
  @bp.route('/logout')
  def logout():
      bp.perm.logout_perm_admin()
      return redirect(url_for('perm-admin.login'))
  
new_contents: # -*- coding: utf-8 -*-
  
  from flask import Blueprint, render_template, current_app, url_for, redirect, request, flash
  
  bp = Blueprint('perm-admin', __name__, template_folder='templates', static_folder='static')
  
  @bp.route('/')
  def index():
      if not bp.perm.has_perm_admin_logined():
          return redirect(url_for('perm-admin.login'))
  
      render_data = {
          'base_api_url': current_app.config.get('PERM_ADMIN_API_PREFIX'),
          'base_web_url': current_app.config.get('PERM_ADMIN_PREFIX'),
          'debug': current_app.config.get('DEBUG'),
      }
  
      return render_template('/perm-admin/index.html', **render_data)
  
  @bp.route('/login', methods=['GET', 'POST'])
  def login():
      if request.method == 'POST':
          username = request.form['username']
          password = request.form['password']
          if bp.perm.check_perm_admin_auth(username, password):
              bp.perm.login_perm_admin()
              return redirect(url_for('perm-admin.index'))
          else:
              flash(u'Invalid Password', 'error')
              return redirect(url_for('perm-admin.login'))
      return render_template('/perm-admin/login.html')
  
  @bp.route('/logout')
  def logout():
      bp.perm.logout_perm_admin()
      return redirect(url_for('perm-admin.login'))
  
subject: Remove import error.