title: i want to return two values, but only print one
body: <p>in python function,</p>
  <pre><code>def f(value):
      value = ~~~
      a = ~~~~
  
      return value, a
  
  print(f(value))
  </code></pre>
  <p>I want to return value and a so the program out of the function also can memorize value and a, but want to show only a.</p>
  <p>is there any method to process this?</p>
  <ul>
  <li>I cannot use global, because the error says that 'value is parameter and global'</li>
  <li>I must not change value in f() ('that means, i must not change f(value)')</li>
  <li>Also, I must not  change 'print(f(value))'. only thing i can do is changing inner of 'def f(value):'.</li>
  </ul>