title: Unable to see or modify value of PYTHONHASHSEED through a module
body: <p>Trying to see the value of <a href="https://docs.python.org/3.4/using/cmdline.html?highlight=pythonhashseed#envvar-PYTHONHASHSEED" rel="noreferrer"><code>PYTHONHASHSEED</code></a> by using: </p>
  
  <pre><code># (this is inside module_1.py)
  os.environ['PYTHONHASHSEED'] 
  </code></pre>
  
  <p>raises a KeyError: </p>
  
  <pre><code>Traceback (most recent call last):
    File "/home/black/Dev/Projects/module_1.py", line 2, in &lt;module&gt;
      os.environ['PYTHONHASHSEED']
    File "/usr/lib/python3.4/os.py", line 631, in __getitem__
      raise KeyError(key) from None
  KeyError: 'PYTHONHASHSEED'
  </code></pre>
  
  <p>Printing the contents of <code>os.environ</code> by</p>
  
  <pre><code>for i in sorted(os.environ):
      print(i)
  
  # prints:
  # CLUTTER_IM_MODULE
  # COMPIZ_BIN_PATH
  # ...
  # etc.
  </code></pre>
  
  <p>reveals that <code>PYTHONHASHSEED</code> is not inside, but I am pretty sure it should  have a value since <a href="https://docs.python.org/3.4/using/cmdline.html?highlight=pythonhashseed#cmdoption-R" rel="noreferrer">on Python 3.3 and greater, hash randomization is turned on by default</a>.</p>
  
  <p><strong>Question:</strong><br>
  Why can't I access its value this way and how can I access it through <code>module_1.py</code>?</p>