I decided to post this on dev list because I am dealing with in-depth
aspects of tryton source code. Please correct me if i am wrong.
I get a strange error when running a simple proteus script:
---
from proteus import config
config.set_trytond(database='test',
config_file='/home/mr/training/trytond.conf')
---
When I run this script, I get this error:
---
Traceback (most recent call last):
File "test.py", line 5, in <module>
config.set_trytond(database='test',
config_file='/home/mr/training/trytond.conf')
File
"/home/mr/training/venv/local/lib/python2.7/site-packages/proteus/config.py",
line 280, in set_trytond
_CONFIG.current = TrytondConfig(database, user, config_file=config_file)
File
"/home/mr/training/venv/local/lib/python2.7/site-packages/proteus/config.py",
line 232, in __init__
self.pool.init()
File "/home/mr/training/trytond/trytond/pool.py", line 155, in init
lang=lang)
File "/home/mr/training/trytond/trytond/modules/__init__.py", line 426,
in load_modules
with Transaction().start(database_name, 0):
File "/home/mr/training/trytond/trytond/transaction.py", line 75, in start
Database = backend.get('Database')
File "/home/mr/training/trytond/trytond/backend/__init__.py", line 35, in
get
module = sys.modules[modname]
KeyError: 'trytond.backend.'
---
Indeed, in file /home/mr/training/trytond/trytond/backend/__init__.py there
is a get function with the line 'module = sys.modules[modname]', but there
is something strange. When I inserted a debugging print command in get
method, the text is printed four times when I start trytond, but when I run
the script, nothing is printed.
On the other hand, when debugging print command is "print modname", output
(when starting the server) is 'trytond.backend.sqlite', but in traceback
key is 'trytond.backend.', i.e the third component is and empty string.
Then I modified the code and put in the string literal
'trytond.backend.sqlite', i.e
old line:
module = sys.modules[modname]
new line:
module = sys.modules['trytond.backend.sqlite']
However, i again get error: KeyError: 'trytond.backend.sqlite'
I thought this is the correct value and don't understand why this key
doesn't exist in sys.modules dictionary.
And finally, i discovered the problem is solved when inserted this line in
trytond configuration file, in database section:
uri = sqlite://
According to documentation, this is the default, so again something
confusing.
Please help me understand what is going on.
Regards,
Marko
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