title: How to store user input in txt file?(Python 3)
body: <p>So i am writing a program and i made a function which stores user data in a txt file.It is like a simple registration function.The user gives the username and password to store.Problem is i can't store user input in the file.</p>
  
  <p>My code is :</p>
  
  <pre><code>def reguser():      #Function name.
  
      fwu = open('user.txt','w')     #create or open user.txt file.
      user = input("Username: ")     #takes the user input.e.g what username to register
      fwu.write(user)                #this command should write input into the file
      fwp = open('pass.txt','w')     #create or open pass.txt file.
      pas  = input ("Password: ")    #takes user input e.g what password to register
      fwp.write(pas)                 #write the password into the file
      print ("To check for registraion completion, please login.")
      askuser()    
  </code></pre>
  
  <p>So what i get is two text files user and pass but they are empty.
  What am i doing wrong??
  and please do not tell me to use modules for registraion.</p>
  
  <p>Regards ali7112001</p>