python - Why can't Pyramid locate this template file? -

i installed pyramid framework (following tutorial. created new project starting "alchemy" scafffold (pcreate -s alchemy myproject) , ran setup.py script. reason, when run pserve, toplevellookupexception, stating can't locate template uri 'pyramid_debugtoolbar:templates/exception_summary.dbtmako':

toplevellookupexception: can not locate template uri 'pyramid_debugtoolbar:templates/exception_summary.dbtmako' 

the file 'mytemplate.pt' in directory, reason still error.

here init.py:

from pyramid.config import configurator sqlalchemy import engine_from_config .models import (     dbsession,     base,     )   def main(global_config, **settings):     """ function returns pyramid wsgi application.     """     engine = engine_from_config(settings, 'sqlalchemy.')     dbsession.configure(bind=engine)     base.metadata.bind = engine     config = configurator(settings=settings)     config.add_static_view('static', 'static', cache_max_age=3600)     config.add_route('home', '/')     config.scan()     return config.make_wsgi_app() 

here views.py:

from pyramid.response import response pyramid.view import view_config  sqlalchemy.exc import dbapierror  .models import ( dbsession, mymodel, )   @view_config(route_name='home', renderer='/templates/mytemplate.pt') def my_view(request):     try:         1 = dbsession.query(mymodel).filter(mymodel.name == 'one').first()     except dbapierror:         return response(conn_err_msg, content_type='text/plain', status_int=500)     return {'one': one, 'project': 'triumph'}  conn_err_msg = """error""" 

here models.py file:

from sqlalchemy import (     column,     integer,     text,     )  sqlalchemy.ext.declarative import declarative_base  sqlalchemy.orm import (     scoped_session,     sessionmaker,     )  zope.sqlalchemy import zopetransactionextension  dbsession = scoped_session(sessionmaker(extension=zopetransactionextension())) base = declarative_base()   class mymodel(base):     __tablename__ = 'models'     id = column(integer, primary_key=true)     name = column(text, unique=true)     value = column(integer)      def __init__(self, name, value):         self.name = name         self.value = value 

here development.ini file:

### # app configuration # http://docs.pylonsproject.org/projects/pyramid/en/latest/narr/environment.html ###  [app:main] use = egg:triumph  pyramid.reload_templates = true pyramid.debug_authorization = false pyramid.debug_notfound = false pyramid.debug_routematch = false pyramid.default_locale_name = en pyramid.includes = pyramid_debugtoolbar  # default, toolbar appears clients ip addresses # '127.0.0.1' , '::1'. # debugtoolbar.hosts = 127.0.0.1 ::1  ### # wsgi server configuration ###  [server:main] use = egg:waitress#main host = 0.0.0.0 port = 6543  ### # logging configuration # http://docs.pylonsproject.org/projects/pyramid/en/latest/narr/logging.html ###  [loggers] keys = root, triumph  [handlers] keys = console  [formatters] keys = generic  [logger_root] level = info handlers = console  [logger_triumph] level = debug handlers = qualname = triumph  [handler_console] class = streamhandler args = (sys.stderr,) level = notset formatter = generic  [formatter_generic] format = %(asctime)s %(levelname)-5.5s [%(name)s][%(threadname)s] %(message)s 

according official docs (pyramid 1.4 - basic layout) explaining basic layout of pyramid application need change view configuration line shown below - or said: remove leading slash template path.

views.py:

@view_config(route_name='home', renderer='templates/mytemplate.pt') def my_view(request): 

temporarily disabling pyramid debugtoolbar well. have included 1 of these 2 ways (docs). either these settings fixed or disable debugging purposes.