Autogenerate do no fail nicely in some case

[sqlalchemy-bot]

Migrated issue, originally created by miniwark NA (@miniwark)

Autogenerate fail if there not already migration scripts with this traceback :

#!python
(pyramid) > alembic revision --autogenerate
Traceback (most recent call last):
  File "/home/toto/Developpement/virtualenvs/pyramid/bin/alembic", line 8, in <module>
    load_entry_point('alembic==0.3.5', 'console_scripts', 'alembic')()
  File "/home/toto/Developpement/virtualenvs/pyramid/lib/python2.7/site-packages/alembic/config.py", line 229, in main
    **dict((k, getattr(options, k)) for k in kwarg)
  File "/home/toto/Developpement/virtualenvs/pyramid/lib/python2.7/site-packages/alembic/command.py", line 66, in revision
    script = ScriptDirectory.from_config(config)
  File "/home/toto/Developpement/virtualenvs/pyramid/lib/python2.7/site-packages/alembic/script.py", line 57, in from_config
    config.get_main_option('script_location')
  File "/home/toto/Developpement/virtualenvs/pyramid/lib/python2.7/site-packages/alembic/util.py", line 141, in coerce_resource_to_filename
    if not os.path.isabs(fname) and ":" in fname:
  File "/home/toto/Developpement/virtualenvs/pyramid/lib64/python2.7/posixpath.py", line 53, in isabs
    return s.startswith('/')
AttributeError: 'NoneType' object has no attribute 'startswith'

I am not sure of why it fail like this :

• maybe it is because there is nothing yet in my /version directory
• or because i use an unsupported script location :

alembic.script_location = pyramidproject:scripts/alembic

[sqlalchemy-bot]

Changes by Michael Bayer (@zzzeek):

• changed status to closed

[sqlalchemy-bot]

Michael Bayer (@zzzeek) wrote:

The issue is that the name of the key in alembic.ini is "script_location", not "alembic.script_location". An informative error message is added in [[https://bitbucket.org/zzzeek/alembic/changeset/56bdf6c98fb3a5a4a6bb481bf108b08a6cd83616 |56bdf6c98fb3a5a4a6bb481bf108b08a6cd83616 ]].