title: How to extract text from image using pytesseract in colab?
body: <p>I am getting this error when I try to use pytesseract in colab.</p>
  <p>I am not sure how to fix this problem. I also install with <strong>pip install tesseract</strong>. But it doesn't work.</p>
  <p>Does anyone know how to solve this issue?
  Or do you have any other python library OCR?</p>
  <pre><code>FileNotFoundError: [Errno 2] No such file or directory: 'tesseract': 'tesseract'
  
  During handling of the above exception, another exception occurred:
  
  TesseractNotFoundError                    Traceback (most recent call last)
  /usr/local/lib/python3.7/dist-packages/pytesseract/pytesseract.py in run_tesseract(input_filename, output_filename_base, extension, lang, config, nice, timeout)
      257         if e.errno != ENOENT:
      258             raise e
  --&gt; 259         raise TesseractNotFoundError()
      260 
      261     with timeout_manager(proc, timeout) as error_string:
  
  TesseractNotFoundError: tesseract is not installed or it's not in your PATH. See README file for more information.
  </code></pre>
  <p>Here is my code. I am trying to detect the number.</p>
  <pre><code>import pytesseract
  roi = img[ymin:ymax, xmin:xmax]
  text = pytesseract.image_to_string(roi, lang='eng')
  
  </code></pre>