title: FileNotFoundError: [Errno 2] No such file or directory: 'tesseract'
body: <p>i have installed the tasseract using</p>
  
  <pre><code>pip install pytesseract
  </code></pre>
  
  <p>whenever i tried to run this piece of code</p>
  
  <pre><code>from PIL import Image
  import pytesseract
  im = Image.open('hasan1.jpg')
  print (pytesseract.image_to_string(im))
  </code></pre>
  
  <p>I got these errors.</p>
  
  <pre><code> Traceback (most recent call last):
   File "ocr.py", line 34, in &lt;module&gt;
   text = pytesseract.image_to_string(Image.open(filename))
   File "/home/hasans/.virtualenvs/cv/local/lib/python3.5/site-
   packages/pytesseract/pytesseract.py", line 193, in image_to_string
   return run_and_get_output(image, 'txt', lang, config, nice)
   File "/home/hasans/.virtualenvs/cv/local/lib/python3.5/site-
   packages/pytesseract/pytesseract.py", line 140, in run_and_get_output
   run_tesseract(**kwargs)
   File "/home/hasans/.virtualenvs/cv/local/lib/python3.5/site-
   packages/pytesseract/pytesseract.py", line 111, in run_tesseract
   proc = subprocess.Popen(command, stderr=subprocess.PIPE)
   File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
   restore_signals, start_new_session)
   File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
   raise child_exception_type(errno_num, err_msg)
   FileNotFoundError: [Errno 2] No such file or directory: 'tesseract'
  </code></pre>