title: UnboundLocalError: local variable 'cursor' referenced before assignment
body: <p>So I am a newbie but working on a registration system form in flask/MYSQL</p>
  
  <p>I am receiving this error (UnboundLocalError: local variable 'cursor' referenced before assignment)</p>
  
  <p>After hours of playing with the code and research I need your help.</p>
  
  <p>This is my file, please let me know if theres anything else I need to share.
  thank you</p>
  
  <pre><code>from flask import Flask, render_template, json, request
  from flask.ext.mysqldb import MySQL
  from werkzeug import generate_password_hash, check_password_hash
  
  app = Flask(__name__)
  mysql = MySQL()
  
  
  app.config['MYSQL_DATABASE_USER'] = 'x'
  app.config['MYSQL_DATABASE_PASSWORD'] = 'x'
  app.config['MYSQL_DATABASE_DB'] = 'x'
  app.config['MYSQL_DATABASE_HOST'] = 'x'
  mysql.init_app(app)
  
  @app.route('/')
  def main():
      return render_template('index.html')
  
  @app.route('/login')
  def login():
      return render_template('login.html')
  
  @app.route('/showSignUp')
  def showSignUp():
      return render_template('signup.html')
  
  
  @app.route('/signUp',methods=['POST','GET'])
  def signUp():
      try:
          _name = request.form['inputName']
          _email = request.form['inputEmail']
          _password = request.form['inputPassword']
  
          # validate the received values
          if _name and _email and _password:
  
              # All Good, let's call the MySQL
  
              conn = mysql.connect()
              cursor = conn.cursor()
              _hashed_password = generate_password_hash(_password)
              cursor.callproc('sp_createUser',(_name,_email,_hashed_password))
              data = cursor.fetchall()
  
              if len(data) is 0:
                  conn.commit()
                  return json.dumps({'message':'User created successfully !'})
              else:
                  return json.dumps({'error':str(data[0])})
          else:
              return json.dumps({'html':'&lt;span&gt;Enter the required fields&lt;/span&gt;'})
  
      except Exception as e:
          return json.dumps({'error':str(e)})
      finally:
          cursor.close()
      conn.close()
  
  if __name__ == '__main__':
      app.run()
  </code></pre>