在model.py中导入GAE API的错误

Question

在我的model.py中，我导入图像以生成图片的url，如下所示。

from google.appengine.api import images 

class Picture(models.Model): 
    picture_blob_key = models.TextField() 

    def picture_url(self): 
     return images.get_serving_url(self.picture_blob_key) 

哪些工作正常。我得到了我想要的结果。然而，每当我尝试syncdb它给我一个错误：

$ python manage.py syncdb Traceback（最近调用最后一次）：文件“manage.py”，行14，在execute_manager（设置）文件“/应用程序/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/django_1_3/django/core/management/ init .py“，第438行，在execute_manager utility.execute（）文件” /Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/django_1_3/django/core/management/ init .py“，in line 379，in execute self.fetch_command（subcommand ）.run_from_argv（self.argv）文件“/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default .bundle/Contents/Resources/google_appengine/lib/django_1_3/django/core/management/base.py“，第191行，在run_from_argv self.execute（* args，** options。 dict）执行自我文件“/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/django_1_3/django/core/management/base.py”，第219行.validate（）文件“/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/django_1_3/django/core/management/base.py”，第249行，用于验证num_errors = get_validation_errors（s，app）文件“/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/django_1_3/django/core/management/validation.py”，第35行， get_app_errors（）中的（app_name，error）的get_validation_errors中的项目（）：文件“/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/django_1_3/django/db/ models/loading.py“，第146行，ge t_app_errors self._populate（）文件“/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/django_1_3/django/db/models/loading.py”，第64行， _populate self.load_app（app_name）文件“/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/django_1_3/django/db/models/loading.py”，第78行，在load_app models = import_module（'。models'，app_name）文件“/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/django_1_3/django/utils/importlib.py” ，第35行，在import_module import（name）文件“/Users/taelimoh/Dropbox/gluwa_test/society/models.py”，第10行，从google.appengine.api导入图像文件“/Applications/GoogleAppEngineLauncher.app /Contents/Resources/GoogleAppEngine-default.bundle/Contents/Reso urces/google_appengine/google/appengine/api/images/init .py“，第48行，从google.appengine.api导入blobstore文件”/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/目录/资源/ google_appengine/google/appengine/api/blobstore/init .py“，第23行，来自blobstore import * File”/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/资源/ google_appengine/google/appengine/api/blobstore/blobstore.py“，第38行，从google.appengine.api导入数据存储文件”/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/资源/ google_appengine/google/appengine/api/datastore.py“，第62行，从google.appengine.datastore导入datastore_query文件”/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppE ngine-default.bundle/Contents/Resources/google_appengine/google/appengine/datastore/datastore_query.py“，第64行，来自google.appengine.datastore import datastore_index File”/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine- default.bundle/Contents/Resources/google_appengine/google/appengine/datastore/datastore_index.py“，第60行，来自google。appengine.api导入验证文件“/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/api/validation.py”，第51行，在import yaml ImportError：No模块命名yaml

所以，现在我不得不注释GAE API导入时，我使用syncdb，然后将其带回。任何意见将不胜感激。

Answer 1

您得到的错误是因为import yaml失败。这个库与GAE捆绑在一起，无论何时启动一个工具，它都会修复sys路径以便找到它。

你可以做的是手动安装yaml包。