ImportError while started to use templates

[Brad Lucas]

Just starting with the simplest of examples to use templates I get the following error. Has anyone else seen this and can explain what is going on?

python app.py

Traceback (most recent call last):

  File "app.py", line 7, in <module>

    render = web.template.render('templates/')

  File "/Library/Python/2.6/site-packages/web/template.py", line 1028, in __init__

    self.mod = __import__(name, None, None, ['x'])

ImportError: No module named templates

My app.py looks like this:

import web

urls = (

    '/', 'index'

)

app = web.application(urls, globals())

render = web.template.render('templates/')

class index:

    def GET(self):

        name = 'Bob'

        return render.index(name)

if __name__ == "__main__":

    app.run()

I have a sub-directory called templates with a file index.html in it.

The index.html file looks like:

$def with (name)

$if name:

    I just wanted to say <em>hello</em> to $name.

$else:

    <em>Hello</em>, world!

Thanks,

Brad

[Brad Lucas]

By putting an empty __init__.py file inside of templates I have eliminated the ImportError. Can anyone explain why this is necessary? Any pointers to where I should have learned about this? Nothing I found mentioned needed this for a simple web.py example.

Next up though I get the following error:

<type 'exceptions.AttributeError'> at /

'module' object has no attribute 'index'

So it is not exactly fixed. There is an index.html file in templates yet the render.index call seems to fail.

Any ideas?

[Brad Lucas]

The __ini__.py file made no sense so I removed it.

Back to Import Error: No module named templates

Now looking into the line 1028 of the templates.py file I notice.

The line ... in my file

render = web.template.render('templates/')

ends up with an error inside a class called GAE_Render

class GAE_Render(Render):

    # Render gets over-written. make a copy here.

    super = Render

    def __init__(self, loc, *a, **kw):

        GAE_Render.super.__init__(self, loc, *a, **kw)

        

        import types

        if isinstance(loc, types.ModuleType):

            self.mod = loc

        else:

            name = loc.rstrip('/').replace('/', '.')

            self.mod = __import__(name, None, None, ['x'])     # line 1028

Why do you think creating an render object is ending up inside of a Google App Engine class. 

I'm just running the simple example on the command line.

- Brad

On Monday, November 26, 2012 12:00:51 AM UTC-5, Brad Lucas wrote:

[Brad Lucas]

OK. Looks like the template.py file has an internal check and if it can find an installed Google App Engine SDK then it uses GAE_Render instead of render.

By moving the SDK out of the way I was able to run the simple example.

- Brad

[sni]

Hi Brad,

try:

render = web.template.render(os.path.join(os.path.dirname(__file__), 'templates/'))