old_contents: from sqlalchemy import create_engine
  from sqlalchemy.orm import sessionmaker, scoped_session
  from sqlalchemy.ext.declarative import declarative_base
  from psiturk_config import PsiturkConfig
  import re, os
  
  config = PsiturkConfig()
  config.load_config()
  
  r = re.compile("OPENSHIFT_(.+)_DB_URL") # Might be MYSQL or POSTGRESQL
  matches = filter(r.match, os.environ)
  if matches:
      DATABASE = "{}{}".format(os.environ[matches[0]], os.environ['OPENSHIFT_APP_NAME'])
  else:
      DATABASE = config.get('Database Parameters', 'database_url')
  
  if 'mysql' in config.get('Database Parameters', 'database_url').lower():
  	try:
  		 __import__('imp').find_module('pymysql')
  	except ImportError:
  		print("Sorry, to use a MySQL database you need to install "
  			  "the `mysql-python` python package.  Try `pip install "
  			  "mysql-python`. Hopefully it goes smoothly for you. "
  			  "Installation can be tricky on some systems.")
  		exit()
  
  engine = create_engine(DATABASE, echo=False, pool_recycle=3600) 
  db_session = scoped_session(sessionmaker(autocommit=False,
                                           autoflush=False,
                                           bind=engine))
  
  Base = declarative_base()
  Base.query = db_session.query_property()
  
  def init_db():
      #print "Initalizing db if necessary."
      Base.metadata.create_all(bind=engine)
  
new_contents: from sqlalchemy import create_engine
  from sqlalchemy.orm import sessionmaker, scoped_session
  from sqlalchemy.ext.declarative import declarative_base
  from psiturk_config import PsiturkConfig
  import re, os
  
  config = PsiturkConfig()
  config.load_config()
  
  r = re.compile("OPENSHIFT_(.+)_DB_URL") # Might be MYSQL or POSTGRESQL
  matches = filter(r.match, os.environ)
  if matches:
      DATABASE = "{}{}".format(os.environ[matches[0]], os.environ['OPENSHIFT_APP_NAME'])
  else:
      DATABASE = config.get('Database Parameters', 'database_url')
  
  if 'mysql://' in DATABASE.lower():
  	try:
  		 __import__('imp').find_module('pymysql')
  	except ImportError:
  		print("To use a MySQL database you need to install "
  			  "the `pymysql` python package.  Try `pip install "
  			  "pymysql`.")
  		exit()
  	# internally use `mysql+pymysql://` so sqlalchemy talks to
  	# the pymysql package
  	DATABASE = DATABASE.replace('mysql://', 'mysql+pymysql://')
  
  engine = create_engine(DATABASE, echo=False, pool_recycle=3600) 
  db_session = scoped_session(sessionmaker(autocommit=False,
                                           autoflush=False,
                                           bind=engine))
  
  Base = declarative_base()
  Base.query = db_session.query_property()
  
  def init_db():
      #print "Initalizing db if necessary."
      Base.metadata.create_all(bind=engine)
  
subject: use pymysql for MySQL