I am trying to write a test for my GAE programme which uses the datastore.
Following Google's Documentation, I see that I should be adding the path to my SDK into my PYTHONPATH.
I did this using:
import sys
sys.path.remove('/usr/local/lib/python2.7/dist-packages') # Has a 'google' module, which I want to be sure isn't interfering.
sys.path.insert(1,'/home/olly/google-cloud-sdk/platform/google_appengine')
sys.path.insert(1, '/home/olly/google-cloud-sdk/platform/google_appengine/lib/yaml/lib')
Then when the file is run:
Traceback (most recent call last):
File "myapp_tests.py", line 20, in <module>
from google.appengine.ext import ndb
ImportError: No module named appengine.ext
I have installed the SDK in the location above, and looking in /home/olly/google-cloud-sdk/platform/google_appengine/ I found the google folder, which has an __init__.py in it, along with appengine. Basically, the folder structure looks good to me, with them all being named correctly and having __init__.py files.
In an interactive console, after running the commands above, I found that I could run:
import google
no problem, but when I tried
import google.appengine
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named appengine
It was my understanding that having the __init__.py() files in the directories meant that they could be imported as above.
I also did a sudo find / --name "google", and the only thing that showed up that is also in my PYTHONPATH was the /usr/local/lib/python2.7/dist-packages, which I explicitly removed, and also inserted the rest of my paths in front of anyway.
I tried using GAE's own method of:
import dev_appserver
dev_appserver.fix_sys_path()
which added a whole lot of paths to sys.path, but still didn't help me make it work.
I also found that when I add '/home/olly/Servers/google_appengine/google' to my paths, I can run:
import appengine.ext
but running:
from appengine.ext import ndb
causes:
Traceback (most recent call last):
File "booking_function_tests.py", line 16, in <module>
from appengine.ext import ndb
File "/home/olly/Servers/google_appengine/google/appengine/ext/ndb/__init__.py", line 7, in <module>
from tasklets import *
File "/home/olly/Servers/google_appengine/google/appengine/ext/ndb/tasklets.py", line 69, in <module>
from .google_imports import apiproxy_stub_map
File "/home/olly/Servers/google_appengine/google/appengine/ext/ndb/google_imports.py" , line 11, in <module>
from google3.storage.onestore.v3 import entity_pb
ImportError: No module named google3.storage.onestore.v3
Am I missing something really obvious? How should I go about importing ndb?
EDIT:
I'm running the latest SDK (1.9.34), but I have the following code in my google_imports.py:
try:
from google.appengine.datastore import entity_pb
normal_environment = True
except ImportError:
try:
from google3.storage.onestore.v3 import entity_pb
normal_environment = False
except ImportError:
# If we are running locally but outside the context of App Engine.
try:
set_appengine_imports()
from google.appengine.datastore import entity_pb
normal_environment = True
except ImportError:
raise ImportError('Unable to find the App Engine SDK. '
'Did you remember to set the "GAE" environment '
'variable to be the path to the App Engine SDK?')
Also, google.__path__ gives me the '/usr/local/lib/python2.7/dist-packages' path which I thought I removed earlier. Here is an excerpt of how I'm removing it:
import sys
sys.path.insert(1, '/home/olly/Servers/google_appengine')
sys.path.insert(1, '/home/olly/Servers/google_appengine/lib/yaml/lib')
sys.path.remove('/usr/local/lib/python2.7/dist-packages')
import google
print google.__path__
print sys.path
['/usr/local/lib/python2.7/dist-packages/google']
['/home/olly/Servers/google_appengine/myapp', '/home/olly/Servers/google_appengine/lib/yaml/lib', '/home/olly/Servers/google_appengine/google', '/home/olly/Servers/google_appengine', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PILcompat', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode']
So my sys.path is updated, but import google seems to still be importing from the no-longer-there path, which would be the crux of my problem I guess. Do I need to reload the path or something?
I run into these problems a lot less by always running inside a virtualenv.
I agree with snakecharmerrb you should get print google.__file__ or google.__path_ to figure out exactly what you're importing.
This snippet might also solve your problem:
import google
gae_dir = google.__path__.append('/path/to/appengine_sdk//google_appengine/google')
sys.path.insert(0, gae_dir) # might not be necessary
import google.appengine # now it's on your import path`
Which version of app engine SDK are you using? I am using the latest SDK (1.9.34). I find the below snippet in my ~/google_appengine/google/appengine/ext/ndb/google_imports.py file
try:
from google3.storage.onestore.v3 import entity_pb
normal_environment = False
except ImportError:
# If we are running locally but outside the context of App Engine.
try:
set_appengine_imports()
from google.appengine.datastore import entity_pb
normal_environment = True
except ImportError:
raise ImportError('Unable to find the App Engine SDK. '
'Did you remember to set the "GAE" environment '
'variable to be the path to the App Engine SDK?')
But in your stack trace, after google3.storage import it doesn't seem to go inside the except clause.
So try the same code with latest SDK.
Related
from pywinauto import application
Error message:
Traceback (most recent call last): File "D:/Program
Files/Python/pywinauto.py", line 1, in
from pywinauto import application File "D:/Program Files/Python\pywinauto.py", line 1, in
from pywinauto import application ImportError: cannot import name 'application'
From their documentation:
from pywinauto.application import Application
Source: https://github.com/pywinauto/pywinauto
You should not name your scripts with the names of python packages.This will make your python scripts in the same location to try to import modules from these files instead of original packages.Here you should not name the script as 'pywinauto.py'.Rename it and try.Also there should not be any scripts with name 'pywinauto.py' in the same location.
The real problem is in the script name. It shouldn't be called pywinauto.py because Python will try to import it instead of real pywinauto package. Please rename your script.
I have a strange import problem with python. The same code works on OSX, but it doesn't work on precise 12.04.
test.py
lib/
twitter/
twitterstream.py
__init__.py
The twitterstream.py has a class TwitterStream.
test.py:
import sys
sys.path.append('./lib')
import twitter.twitterstream
tw = twitter.twitterstream.TwitterStream()
tweets = tw.fetchsamples()
print tweets
I am getting following error:
> python test.py
Traceback (most recent call last):
File "test.py", line 3, in
import twitter.twitterstream
ImportError: No module named twitterstream
You have another module twitter installed on your Ubuntu machine.
You put the ./lib path at the end of the module search path; the other twitter module is installed in a location listed on the sys.path search path before that.
Insert ./lib at the start instead:
sys.path.insert(0, './lib')
In test.py, I am trying to import test_data:
import unittest2
import re
from test_data import receipt1_example
test_data.py is in the same directory as test.py. I get the following error:
/Users/ahammond/.virtualenvs/ric2.6/bin/python2.6
/Applications/PyCharm.app/helpers/pycharm/utrunner.py
/Users/ahammond/src/hackfest_spring_2012/parse_me/test.py::test true
Testing started at 11:30 AM ... Traceback (most recent call last):
File "/Applications/PyCharm.app/helpers/pycharm/utrunner.py", line
121, in
module = loadSource(a[0]) File "/Applications/PyCharm.app/helpers/pycharm/utrunner.py", line 44, in
loadSource
module = imp.load_source(moduleName, fileName) File "/Users/ahammond/src/hackfest_spring_2012/parse_me/test.py", line 4,
in
from test_data import receipt1_example ImportError: No module named test_data
Process finished with exit code 1
As you can see, I am running this under pycharm using a virtualenv. Here's a screenshot of the configuration:
The work around i use is:
import sys
import os
try:
import test_data
except ImportError:
sys.path.append(os.path.dirname(__file__))
try:
import test_data
finally:
sys.path.remove(os.path.dirname(__file__))
A friend told me that one can also add the directory entries to some include directories.
Please try PyCharm 2.5.1 RC, there was a bug with sys.path building (it contained incorrect, duplicated project source directory).
If it's not the case, you can mark additional directories as Source in Preferences | Project Structure or add them to the Paths in the Python Interpreters.
I decided to develop my home project in python 3.x rather than 2.x. So I decided to check, if it works under 3.1. I run python3.1 above my package directory and then:
>>> import fathom
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "fathom/__init__.py", line 3, in <module>
from schema import Database
ImportError: No module named schema
when I enter fathom directory however schema can be imported:
>>> import schema
Also when I run python2.6 above my package directory I can do this:
>>> import fathom
My __init__.py has following import:
from schema import Database
from inspectors import PostgresInspector, SqliteInspector, MySqlInspector
Should I add something for python3.1?
Did you try a relative import?
from . import schema
from .inspectors import PostgresInspector
Works in Python 2.6 as well.
The 2to3 script can help you pinpoint more of these problems.
I'm trying to install Plone 3.3rc4 with plone.app.blob and repoze but nothing I've tried has worked so far. For one attempt I've pip-installed repoze.zope2, Plone, and plone.app.blob into a virtualenv. I have this version of DocumentTemplate in the virtualenv's site-packages directory and I'm trying to get it running in RHEL5.
For some reason when I try to run paster serve etc/zope2.ini in this environment way Python gives the message ImportError: No module named DT_Util? DT_Util.py exists in the directory, __init__.py is there too, and the C module it depends on is there. I suspect there's some circular dependency or failure when importing the C extension. Of course this module would work in a normal Zope install...
>>> import DocumentTemplate
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "DocumentTemplate/__init__.py", line 21, in ?
File ".../lib/python2.4/site-packages/DocumentTemplate/DocumentTemplate.py", line 112, in ?
from DT_String import String, File
File ".../lib/python2.4/site-packages/DocumentTemplate/DT_String.py", line 19, in ?
from DocumentTemplate.DT_Util import ParseError, InstanceDict
ImportError: No module named DT_Util
I must say I doubt DocumentTemplate from Zope will work standalone. You are welcome to try though. :-)
Note that DT_Util imports C extensions:
from DocumentTemplate.cDocumentTemplate import InstanceDict, TemplateDict
from DocumentTemplate.cDocumentTemplate import render_blocks, safe_callable
from DocumentTemplate.cDocumentTemplate import join_unicode
You'll need to make sure those are compiled. My guess is that importing the cDocumentTemplate module fails and thus the import of DT_Util fails.