title: PyCharm error: RuntimeError, Click will abort further execution because Python 3
body: <p>I am learning Flask and first to use PyCharm.</p>
  
  <p>Here is the template code:</p>
  
  <pre><code>from flask import Flask
  app = Flask(__name__)
  @app.route('/')
  def hello_world():
      return 'Hello World!'
  if __name__ == '__main__':
      app.run()
  </code></pre>
  
  <p>When i click to run, Here is the Error Info:</p>
  
  <pre><code>Traceback (most recent call last):
    File "/usr/local/Cellar/python3/3.6.4_2/Frameworks/Python.framework/Versions/3.6/lib/python3.6/runpy.py", line 193, in _run_module_as_main
      "__main__", mod_spec)
    File "/usr/local/Cellar/python3/3.6.4_2/Frameworks/Python.framework/Versions/3.6/lib/python3.6/runpy.py", line 85, in _run_code
      exec(code, run_globals)
    File "/Users/jzd/Movies/flask/Three_pyCharm/venv/lib/python3.6/site-packages/flask/__main__.py", line 14, in &lt;module&gt;
      main(as_module=True)
    File "/Users/jzd/Movies/flask/Three_pyCharm/venv/lib/python3.6/site-packages/flask/cli.py", line 894, in main
      cli.main(args=args, prog_name=name)
    File "/Users/jzd/Movies/flask/Three_pyCharm/venv/lib/python3.6/site-packages/flask/cli.py", line 557, in main
      return super(FlaskGroup, self).main(*args, **kwargs)
    File "/Users/jzd/Movies/flask/Three_pyCharm/venv/lib/python3.6/site-packages/click/core.py", line 676, in main
      _verify_python3_env()
    File "/Users/jzd/Movies/flask/Three_pyCharm/venv/lib/python3.6/site-packages/click/_unicodefun.py", line 118, in _verify_python3_env
      'for mitigation steps.' + extra)
  RuntimeError: Click will abort further execution because Python 3 was configured to use ASCII as encoding for the environment.  Consult http://click.pocoo.org/python3/for mitigation steps.
  
  This system lists a couple of UTF-8 supporting locales that
  you can pick from.  The following suitable locales where
  discovered: af_ZA.UTF-8, am_ET.UTF-8, be_BY.UTF-8, bg_BG.UTF-8, ca_ES.UTF-8, cs_CZ.UTF-8, da_DK.UTF-8, de_AT.UTF-8, de_CH.UTF-8, de_DE.UTF-8, el_GR.UTF-8, en_AU.UTF-8, en_CA.UTF-8, en_GB.UTF-8, en_IE.UTF-8, en_NZ.UTF-8, en_US.UTF-8, es_ES.UTF-8, et_EE.UTF-8, eu_ES.UTF-8, fi_FI.UTF-8, fr_BE.UTF-8, fr_CA.UTF-8, fr_CH.UTF-8, fr_FR.UTF-8, he_IL.UTF-8, hr_HR.UTF-8, hu_HU.UTF-8, hy_AM.UTF-8, is_IS.UTF-8, it_CH.UTF-8, it_IT.UTF-8, ja_JP.UTF-8, kk_KZ.UTF-8, ko_KR.UTF-8, lt_LT.UTF-8, nl_BE.UTF-8, nl_NL.UTF-8, no_NO.UTF-8, pl_PL.UTF-8, pt_BR.UTF-8, pt_PT.UTF-8, ro_RO.UTF-8, ru_RU.UTF-8, sk_SK.UTF-8, sl_SI.UTF-8, sr_YU.UTF-8, sv_SE.UTF-8, tr_TR.UTF-8, uk_UA.UTF-8, zh_CN.UTF-8, zh_HK.UTF-8, zh_TW.UTF-8
  </code></pre>
  
  <p>I think the line is important.</p>
  
  <blockquote>
    <p>RuntimeError: Click will abort further execution because Python 3 was
    configured to use ASCII as encoding for the environment.</p>
  </blockquote>
  
  <p>I find the answer <a href="https://stackoverflow.com/questions/36651680/click-will-abort-further-execution-because-python-3-was-configured-to-use-ascii">Click will abort further execution because Python 3 was configured to use ASCII as encoding for the environment</a> .</p>
  
  <p>While still not to know how to fix it.</p>
  
  <p>Instructions is very needed, which is easy to follow .</p>