title: Why is the command 'sudo pip uninstall' not working?
body: <p>When I type the following command in Ubuntu, it is showing all list of python packages:</p>
  
  <pre><code>$  sudo pip list
  adium-theme-ubuntu (0.3.2)
  apt-xapian-index (0.44)
  apturl (0.5.1ubuntu3)
  argparse (1.2.1)
  BeautifulSoup (3.2.0)
  Brlapi (0.5.6)
  bzr (2.5.1)
  chardet (2.0.1)
  command-not-found (0.2.44)
  dirspec (3.0.0)
  distribute (0.7.3)
  dnspython (1.9.4)
  docutils (0.8.1)
  duplicity (0.6.18)
  gdata (2.0.14)
  GnuPGInterface (0.3.2)
  httplib2 (0.7.2)
  jockey (0.9.7)
  louis (2.3.0)
  mercurial (2.0.2)
  nvidia-common (0.0.0)
  onboard (0.97.1)
  oneconf (0.2.8.1)
  PAM (0.4.2)
  paramiko (1.7.7.1)
  pexpect (2.3)
  pip (1.4.1)
  piston-mini-client (0.7.2)
  Pmw (1.3.2)
  psutil (0.4.1)
  psycopg2 (2.4.5)
  PyChart (1.39)
  pycrypto (2.4.1)
  pycups (1.9.61)
  pycurl (7.19.0)
  pydot (1.0.2)
  pyinotify (0.9.2)
  pyOpenSSL (0.12)
  pyparsing (1.5.2)
  pyserial (2.5)
  pysmbc (1.0.13)
  python-apt (0.8.3ubuntu7.2)
  python-ldap (2.3.13)
  python-openid (2.2.5)
  python-virtkey (0.60.0)
  pyxdg (0.19)
  PyYAML (3.10)
  reportlab (2.5)
  sessioninstaller (0.0.0)
  setuptools (0.8b2)
  simplejson (2.3.2)
  system-service (0.1.6)
  Twisted-Core (11.1.0)
  Twisted-Names (11.1.0)
  Twisted-Web (11.1.0)
  ubuntuone-couch (0.3.0)
  ubuntuone-installer (3.0.2)
  ubuntuone-storage-protocol (3.0.2)
  ufw (0.31.1-1)
  unattended-upgrades (0.1)
  unittest2 (0.5.1)
  unity-lens-video (0.3.5)
  unity-scope-video-remote (0.3.5)
  usb-creator (0.2.23)
  uTidylib (0.2)
  wsgiref (0.1.2)
  xdiagnose (2.5.3)
  xkit (0.0.0)
  xlwt (0.7.2)
  ZSI (2.1-a1)
  </code></pre>
  
  <p>When I import a particular package, it is working perfect:</p>
  
  <pre><code>$ sudo python
  Python 2.7.3 (default, Sep 26 2013, 20:08:41) 
  [GCC 4.6.3] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt; import argparse
  &gt;&gt;&gt; 
  </code></pre>
  
  <p>But when I try to uninstall particular package, it throws an error like this:</p>
  
  <pre><code>$  sudo pip uninstall argparse
  Can't uninstall 'argparse'. No files were found to uninstall.
  </code></pre>
  
  <p>Why I am facing above problem?</p>