title: Flask installation error with virtualenv
body: <p>I want to setup flask so I follow the instructions on  Flask installation website. I got error when I used "virtualenv venv".Meanwhile version of python is 2.7.6</p>
  
  <pre><code>semihy@semihy-Inspiron-5537:~/Masaüstü/flaskproject$ virtualenv env
  New python executable in env/bin/python
  Traceback (most recent call last):
    File "&lt;string&gt;", line 1, in &lt;module&gt;
  UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 17: ordinal not in range(128)
  ERROR: The executable env/bin/python is not functioning
  ERROR: It thinks sys.prefix is u'/home/semihy/Masa\xfcst\xfc/flaskproject' (should be u'/home/semihy/Masa\xfcst\xfc/flaskproject/env')
  ERROR: virtualenv is not compatible with this system or executable
  </code></pre>