Problem with Import

[Quang Lam]

i placed a new module file in the modules folder but i got the error saying there is no module named in the modules folder when i import the module. However, i can import the other modules in the modules folder but not the new one.

Please help 

[Dave S]

On Friday, June 7, 2019 at 10:33:09 AM UTC-7, Quang Lam wrote:

i placed a new module file in the modules folder but i got the error saying there is no module named in the modules folder when i import the module. However, i can import the other modules in the modules folder but not the new one.

Please help 

If you have appadmin enabled, the "sites" page has a reload button.  Otherwise, stop and restart web2py.
(I only use modules in Scheduler tasks, so it's just the -K that has to be stop-and-go)


/dps

[Quang Lam]

Hi Dave

i restarted the web2py, reloaded the adminpage but i still got the error saying no module named in the modules folder. i have no problem with the other modules except the new one named mode_extraction. Also, i checked my modules folder, web2py actually compiles the mode_extraction module because i saw the pyc file but i dont know why i got the error of no module named in the folder.

Thanks 

[Dave S]

On Friday, June 7, 2019 at 1:24:23 PM UTC-7, Quang Lam wrote:

Hi Dave

i restarted the web2py, reloaded the adminpage but i still got the error saying no module named in the modules folder. i have no problem with the other modules except the new one named mode_extraction. Also, i checked my modules folder, web2py actually compiles the mode_extraction module because i saw the pyc file but i dont know why i got the error of no module named in the folder.

Thanks 

Ah!  Maybe the custom importer is not handling the underscore.  Try renaming the module.

/dps
 

[Quang Lam]

Hi Dave, i named the other modules with underscore too and it worked but i dont know why this one is not working, any other suggestion?

[Jonathan Clark]

Hi,

If you have two modules you are importing, and one works and the other doesn't, why can't you:

1) Make them both the same content and see if you can still import both or only one. If only one works, what can the difference be except the name etc.

2) If they both import ok when they have identical content (but different names), then gradually change one of them to be the content you actually want to import, and see what it is that you change which makes the import stop working?

Good luck.

[Quang Lam]

Hi Johnathan, thanks for your suggestion. it's really helpful 

it turns out that the import psycopg2 in my module caused the problem. if i take out the import psycopg2, the import module works fine. However, i need to import psycopg2 to connect postgres database. how can i fix this situation ?

Please help thanks 

[Dave S]

On Monday, June 10, 2019 at 2:31:33 PM UTC-7, Quang Lam wrote:

Hi Johnathan, thanks for your suggestion. it's really helpful 

it turns out that the import psycopg2 in my module caused the problem. it i take out the import psycopg2, the import module works fine. However, i need to import psycopg2 to connect postgres database. how can i fix this situation ?

Please help thanks 

Talking to pyscopg2 is normally done through the DAL.  The DAL may talk to multiple databases.

db1 = DAL(myconf.take('db1.uri'), ....)
db2 =  DAL(myconf.take('db2.uri'), ....)

/dps

[Jonathan Clark]

I'm not sure I can help you. You have found the problem is to do with importing psycopg2. I have a feeling I had a similar problem and I switched to pg8000 as the driver, and it just worked. pg8000 is not supposed to be reliable though for postgresql. But it worked for me.

Good luck,

Jonathan

On Mon, 10 Jun 2019 at 22:31, Quang Lam <mrry...@csu.fullerton.edu> wrote:

Hi Johnathan, thanks for your suggestion. it's really helpful 

it turns out that the import psycopg2 in my module caused the problem. it i tool the import psycopg2, the import works fine. However, i need to import psycopg2 to connect postgres database. how can i fix this situation ?

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