sqlalchemy

 [ SQLAlchemy version is : 1.0.15 ] 
========= TRACEBACK =============
Traceback (most recent call last):
  File "./install.py", line 635, in install
    dbi = DbInstall()
  File "/home/domogik/src/domogik/install/db_install.py", line 60, in __init__
    self._db = database.DbHelper(use_cache=False, owner="DbInstall")
  File "/home/domogik/src/domogik/common/database.py", line 188, in __init__
    pool_recycle=pool_recycle, pool_size=20, max_overflow=10)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/__init__.py", line 386, in create_engine
    return strategy.create(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/strategies.py", line 75, in create
    dbapi = dialect_cls.dbapi(**dbapi_args)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/dialects/mysql/pymysql.py", line 49, in dbapi
    return __import__('pymysql')
ImportError: No module named pymysql

=================================
ERROR:root:(<type 'exceptions.ImportError'>, ImportError('No module named pymysql',), <traceback object at 0x7fb70b01e8c0>)
 ==> (<type 'exceptions.ImportError'>, ImportError('No module named pymysql',), <traceback object at 0x7fb70b01e8c0>)