title: No module named fake useragent
body: <p>I'm trying to use the <code>PyTrends</code> module that is available on Github (<a href="https://github.com/dreyco676/pytrends" rel="noreferrer">here</a>). To use this script I need to install the fake-useragent module with:</p>
  
  <pre><code>pip install fake-useragent
  </code></pre>
  
  <p>However, every time I import the file and attempt execute commands in console, I get the following error:</p>
  
  <pre><code>&gt;&gt;&gt; from pytrends2.pyGTrends import pyGTrends
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "pytrends2.py", line 18, in &lt;module&gt;
      from fake_useragent import UserAgent
  ImportError: No module named fake_useragent
  </code></pre>
  
  <p>I've tried different things and had no luck. When trying to make sure the dependency modules are installed with: </p>
  
  <pre><code>pip install pyyaml ua-parser user-agents
  </code></pre>
  
  <p>... I get the following:</p>
  
  <pre><code>abraham@abraham-Inspiron-3521:~$ sudo pip install pyyaml user-agents
  Downloading/unpacking pyyaml
    Downloading PyYAML-3.11.tar.gz (248kB): 248kB downloaded
    Running setup.py (path:/tmp/pip_build_root/pyyaml/setup.py) egg_info for package pyyaml
  
  Downloading/unpacking user-agents
    Downloading user_agents-1.0.1-py2-none-any.whl
  Downloading/unpacking ua-parser (from user-agents)
    Downloading ua_parser-0.5.0-py2-none-any.whl (66kB): 66kB downloaded
  Installing collected packages: pyyaml, user-agents, ua-parser
    Running setup.py install for pyyaml
      checking if libyaml is compilable
      x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c build/temp.linux-x86_64-2.7/check_libyaml.c -o build/temp.linux-x86_64-2.7/check_libyaml.o
      build/temp.linux-x86_64-2.7/check_libyaml.c:2:18: fatal error: yaml.h: No such file or directory
       #include &lt;yaml.h&gt;
                        ^
      compilation terminated.
  
      libyaml is not found or a compiler error: forcing --without-libyaml
      (if libyaml is installed correctly, you may need to
       specify the option --include-dirs or uncomment and
       modify the parameter include_dirs in setup.cfg)
  
  Successfully installed pyyaml user-agents ua-parser
  Cleaning up...
  </code></pre>