title: Install Pyicu in python 3.x
body: <p>My system is Windows 10 x64</p>
  
  <p>Now I would like to install pyicu but I encounter with a problem like this</p>
  
  <pre><code>Collecting pyicu
  </code></pre>
  
  <p>Using cached PyICU-1.9.7.tar.gz
      Complete output from command python setup.py egg_info:
      Traceback (most recent call last):
        File "C:\Users\ANHVU\AppData\Local\Temp\pip-build-v5fb9ri4\pyicu\setup.py", line 12, in 
          ICU_VERSION = os.environ['ICU_VERSION']
        File "C:\Users\ANHVU\AppData\Local\Programs\Python\Python35\lib\os.py", line 725, in <strong>getitem</strong>
          raise KeyError(key) from None
      KeyError: 'ICU_VERSION'</p>
  
  <pre><code>During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
    File "C:\Users\ANHVU\AppData\Local\Temp\pip-build-v5fb9ri4\pyicu\setup.py", line 26, in &lt;module&gt;
      ICU_VERSION = check_output(('icu-config', '--version')).strip()
    File "C:\Users\ANHVU\AppData\Local\Programs\Python\Python35\lib\subprocess.py", line 316, in check_output
      **kwargs).stdout
    File "C:\Users\ANHVU\AppData\Local\Programs\Python\Python35\lib\subprocess.py", line 383, in run
      with Popen(*popenargs, **kwargs) as process:
    File "C:\Users\ANHVU\AppData\Local\Programs\Python\Python35\lib\subprocess.py", line 676, in __init__
      restore_signals, start_new_session)
    File "C:\Users\ANHVU\AppData\Local\Programs\Python\Python35\lib\subprocess.py", line 955, in _execute_child
      startupinfo)
  FileNotFoundError: [WinError 2] The system cannot find the file specified
  
  During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
    File "&lt;string&gt;", line 1, in &lt;module&gt;
    File "C:\Users\ANHVU\AppData\Local\Temp\pip-build-v5fb9ri4\pyicu\setup.py", line 33, in &lt;module&gt;
      ''')
  RuntimeError:
  Please set the ICU_VERSION environment variable to the version of
  ICU you have installed.
  </code></pre>
  
  <p>How can I resolve this? Help me pls.</p>