title: Still cannot push python mysql project to heroku after pip install mysqlclients
body: <p>I try to push the Python project (Python 3.7.0) to Heroku. It's a django project with mysql database linked. But it keeps show that the error: ModuleNotFoundError: No module named 'ConfigParser'. From the previous answers recommended by others, it seems that in python 3, I need to install the mysqlclient instead of mysql-python which is for python 2 version. But I have installed such. Is it some problem about library? The error of pushing to heroku is shown as followed. Sorry that if I am stupid since I am still freshman in python.</p>
  
  <pre><code>remote:              File "/tmp/pip-build-1fjjz1dy/MySQL-python/setup_posix.py", line 2, in &lt;module&gt;
  remote:                from ConfigParser import SafeConfigParser
  remote:            ModuleNotFoundError: No module named 'ConfigParser'
  remote:
  remote:            ----------------------------------------
  remote:        Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-1fjjz1dy/MySQL-python/
  remote:  !     Push rejected, failed to compile Python app.
  remote:
  remote:  !     Push failed
  remote: Verifying deploy...
  remote:
  remote: !       Push rejected to fathomless-citadel-89649.
  </code></pre>
  
  <p>The requirements.txt is:</p>
  
  <pre><code>asn1crypto==0.24.0
  attrs==18.1.0
  auth==0.5.3
  Automat==0.7.0
  beautifulsoup4==4.6.1
  blinker==1.4
  bs4==0.0.1
  certifi==2018.4.16
  cffi==1.11.5
  chardet==3.0.4
  configparser==3.5.0
  constantly==15.1.0
  cryptography==2.3
  cssselect==1.0.3
  dj-database-url==0.5.0
  dj-static==0.0.6
  Django==2.1
  django-bootstrap3==10.0.1
  django-forms-bootstrap==3.1.0
  dnspython==1.15.0
  eventlet==0.24.1
  falcon==1.4.1
  greenlet==0.4.14
  gunicorn==19.9.0
  hyperlink==18.0.0
  idna==2.7
  incremental==17.5.0
  lxml==4.2.4
  misaka==2.1.0
  mongoengine==0.15.3
  monotonic==1.5
  mysql==0.0.1
  mysql-connector==2.1.6
  mysqlclient==1.3.13
  parsel==1.5.0
  pyasn1==0.4.4
  pyasn1-modules==0.2.2
  pycparser==2.18
  PyDispatcher==2.0.5
  PyHamcrest==1.9.0
  pymongo==3.7.1
  PyMySQL==0.9.2
  pyOpenSSL==18.0.0
  python-mimeparse==1.6.0
  pytz==2018.5
  queuelib==1.5.0
  requests==2.19.1
  Scrapy==1.5.1
  service-identity==17.0.0
  six==1.11.0
  static3==0.7.0
  Twisted==18.7.0
  typed-ast==1.1.0
  urllib3==1.23
  views==0.3
  virtualenv==16.0.0
  w3lib==1.19.0
  Werkzeug==0.14.1
  zope.interface==4.5.0
  psycopg2&gt;=2.6.1
  </code></pre>