[注意，我删除了一些信息，例如我的用户名和电子表格的 ID] 嗨！我在 Mac 上，我正在尽力为 google python 安装 gdata。在继续之前，我在这里使用本教程： http ://code.google.com/apis/gdata/articles/python_client_lib.html 我有 python 版本：2.6.1，所以我按照说明跳过安装依赖项。
终端看起来像：
Last login: Sat Jan 1 11:28:47 on ttys000
Users-MacBook-Pro:~ user$ python -V
Python 2.6.1
Users-MacBook-Pro:~ user$
我启动了 python 解释器并尝试导入 xml 树。什么也没发生，所以我尝试进口香蕉。终端看起来像：
Last login: Sat Jan 1 11:30:26 on ttys000
Users-MacBook-Pro:~ user$ python
Python 2.6.1 (r261:67515, Jun 24 2010, 21:47:49)
[GCC 4.2.1 (Apple Inc. build 5646)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from xml.etree import ElementTree
>>> from ninjas import banannas
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named ninjas
这让我很确定我有 xmltree，尽管我不记得曾经安装过它。至此，我下载了gdata库，我的mac自动解压了。然后我运行安装命令，并运行测试命令。我的终端看起来像这样：
Last login: Sat Jan 1 11:31:21 on ttys000
Users-MacBook-Pro:~ user$ cd /Users/User/Downloads/gdata-2-1.0.13
Users-MacBook-Pro:gdata-2-1.0.13 user$ ./setup.py install
/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/
distutils/dist.py:266: UserWarning: Unknown distribution option:
'install_requires'
warnings.warn(msg)
running install
running build
running build_py
creating build
creating build/lib
creating build/lib/atom
copying src/atom/__init__.py -> build/lib/atom
copying src/atom/auth.py -> build/lib/atom
copying src/atom/client.py -> build/lib/atom
copying src/atom/core.py -> build/lib/atom
copying src/atom/data.py -> build/lib/atom
copying src/atom/http.py -> build/lib/atom
copying src/atom/http_core.py -> build/lib/atom
copying src/atom/http_interface.py -> build/lib/atom
copying src/atom/mock_http.py -> build/lib/atom
copying src/atom/mock_http_core.py -> build/lib/atom
copying src/atom/mock_service.py -> build/lib/atom
copying src/atom/service.py -> build/lib/atom
copying src/atom/token_store.py -> build/lib/atom
copying src/atom/url.py -> build/lib/atom
creating build/lib/gdata
copying src/gdata/__init__.py -> build/lib/gdata
copying src/gdata/apps_property.py -> build/lib/gdata
copying src/gdata/auth.py -> build/lib/gdata
copying src/gdata/client.py -> build/lib/gdata
copying src/gdata/core.py -> build/lib/gdata
copying src/gdata/data.py -> build/lib/gdata
copying src/gdata/gauth.py -> build/lib/gdata
--Various copying, migration, and creation printouts exactly the same to the above and below, asides from path, removed to save space--
migration
copying src/gdata/apps/migration/service.py -> build/lib/gdata/apps/
migration
creating build/lib/gdata/apps/organization
copying src/gdata/apps/organization/__init__.py -> build/lib/gdata/
apps/organization
copying src/gdata/apps/organization/service.py -> build/lib/gdata/apps/
organization
creating build/lib/gdata/base
copying src/gdata/base/__init__.py -> build/lib/gdata/base
copying src/gdata/base/service.py -> build/lib/gdata/base
creating build/lib/gdata/blogger
copying src/gdata/blogger/__init__.py -> build/lib/gdata/blogger
copying src/gdata/blogger/client.py -> build/lib/gdata/blogger
copying src/gdata/blogger/data.py -> build/lib/gdata/blogger
copying src/gdata/blogger/service.py -> build/lib/gdata/blogger
creating build/lib/gdata/books
copying src/gdata/books/__init__.py -> build/lib/gdata/books
copying src/gdata/books/data.py -> build/lib/gdata/books
copying src/gdata/books/service.py -> build/lib/gdata/books
creating build/lib/gdata/calendar
copying src/gdata/calendar/__init__.py -> build/lib/gdata/calendar
copying src/gdata/calendar/data.py -> build/lib/gdata/calendar
copying src/gdata/calendar/service.py -> build/lib/gdata/calendar
creating build/lib/gdata/calendar_resource
copying src/gdata/calendar_resource/__init__.py -> build/lib/gdata/
calendar_resource
copying src/gdata/calendar_resource/client.py -> build/lib/gdata/
calendar_resource
copying src/gdata/calendar_resource/data.py -> build/lib/gdata/
calendar_resource
creating build/lib/gdata/codesearch
copying src/gdata/codesearch/__init__.py -> build/lib/gdata/codesearch
copying src/gdata/codesearch/service.py -> build/lib/gdata/codesearch
creating build/lib/gdata/contacts
copying src/gdata/contacts/__init__.py -> build/lib/gdata/contacts
copying src/gdata/contacts/client.py -> build/lib/gdata/contacts
copying src/gdata/contacts/data.py -> build/lib/gdata/contacts
copying src/gdata/contacts/service.py -> build/lib/gdata/contacts
creating build/lib/gdata/docs
copying src/gdata/docs/__init__.py -> build/lib/gdata/docs
copying src/gdata/docs/client.py -> build/lib/gdata/docs
copying src/gdata/docs/data.py -> build/lib/gdata/docs
copying src/gdata/docs/service.py -> build/lib/gdata/docs
creating build/lib/gdata/dublincore
copying src/gdata/dublincore/__init__.py -> build/lib/gdata/dublincore
copying src/gdata/dublincore/data.py -> build/lib/gdata/dublincore
creating build/lib/gdata/exif
copying src/gdata/exif/__init__.py -> build/lib/gdata/exif
creating build/lib/gdata/finance
copying src/gdata/finance/__init__.py -> build/lib/gdata/finance
copying src/gdata/finance/data.py -> build/lib/gdata/finance
copying src/gdata/finance/service.py -> build/lib/gdata/finance
creating build/lib/gdata/geo
copying src/gdata/geo/__init__.py -> build/lib/gdata/geo
copying src/gdata/geo/data.py -> build/lib/gdata/geo
creating build/lib/gdata/health
copying src/gdata/health/__init__.py -> build/lib/gdata/health
copying src/gdata/health/service.py -> build/lib/gdata/health
creating build/lib/gdata/maps
copying src/gdata/maps/__init__.py -> build/lib/gdata/maps
copying src/gdata/maps/client.py -> build/lib/gdata/maps
copying src/gdata/maps/data.py -> build/lib/gdata/maps
creating build/lib/gdata/media
copying src/gdata/media/__init__.py -> build/lib/gdata/media
copying src/gdata/media/data.py -> build/lib/gdata/media
creating build/lib/gdata/notebook
copying src/gdata/notebook/__init__.py -> build/lib/gdata/notebook
copying src/gdata/notebook/data.py -> build/lib/gdata/notebook
creating build/lib/gdata/oauth
copying src/gdata/oauth/__init__.py -> build/lib/gdata/oauth
copying src/gdata/oauth/rsa.py -> build/lib/gdata/oauth
creating build/lib/gdata/opensearch
copying src/gdata/opensearch/__init__.py -> build/lib/gdata/opensearch
copying src/gdata/opensearch/data.py -> build/lib/gdata/opensearch
creating build/lib/gdata/photos
copying src/gdata/photos/__init__.py -> build/lib/gdata/photos
copying src/gdata/photos/service.py -> build/lib/gdata/photos
creating build/lib/gdata/projecthosting
copying src/gdata/projecthosting/__init__.py -> build/lib/gdata/
projecthosting
copying src/gdata/projecthosting/client.py -> build/lib/gdata/
projecthosting
copying src/gdata/projecthosting/data.py -> build/lib/gdata/
projecthosting
creating build/lib/gdata/sites
copying src/gdata/sites/__init__.py -> build/lib/gdata/sites
copying src/gdata/sites/client.py -> build/lib/gdata/sites
copying src/gdata/sites/data.py -> build/lib/gdata/sites
creating build/lib/gdata/spreadsheet
copying src/gdata/spreadsheet/__init__.py -> build/lib/gdata/
spreadsheet
copying src/gdata/spreadsheet/service.py -> build/lib/gdata/
spreadsheet
copying src/gdata/spreadsheet/text_db.py -> build/lib/gdata/
spreadsheet
creating build/lib/gdata/spreadsheets
copying src/gdata/spreadsheets/__init__.py -> build/lib/gdata/
spreadsheets
copying src/gdata/spreadsheets/client.py -> build/lib/gdata/
spreadsheets
copying src/gdata/spreadsheets/data.py -> build/lib/gdata/spreadsheets
creating build/lib/gdata/tlslite
copying src/gdata/tlslite/__init__.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/api.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/BaseDB.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/Checker.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/constants.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/errors.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/FileObject.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/HandshakeSettings.py -> build/lib/gdata/
tlslite
copying src/gdata/tlslite/mathtls.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/messages.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/Session.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/SessionCache.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/SharedKeyDB.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/TLSConnection.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/TLSRecordLayer.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/VerifierDB.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/X509.py -> build/lib/gdata/tlslite
copying src/gdata/tlslite/X509CertChain.py -> build/lib/gdata/tlslite
creating build/lib/gdata/tlslite/integration
copying src/gdata/tlslite/integration/__init__.py -> build/lib/gdata/
tlslite/integration
copying src/gdata/tlslite/integration/AsyncStateMachine.py -> build/
lib/gdata/tlslite/integration
copying src/gdata/tlslite/integration/ClientHelper.py -> build/lib/
gdata/tlslite/integration
copying src/gdata/tlslite/integration/HTTPTLSConnection.py -> build/
lib/gdata/tlslite/integration
copying src/gdata/tlslite/integration/IMAP4_TLS.py -> build/lib/gdata/
tlslite/integration
copying src/gdata/tlslite/integration/IntegrationHelper.py -> build/
lib/gdata/tlslite/integration
copying src/gdata/tlslite/integration/POP3_TLS.py -> build/lib/gdata/
tlslite/integration
copying src/gdata/tlslite/integration/SMTP_TLS.py -> build/lib/gdata/
tlslite/integration
copying src/gdata/tlslite/integration/TLSAsyncDispatcherMixIn.py ->
build/lib/gdata/tlslite/integration
copying src/gdata/tlslite/integration/TLSSocketServerMixIn.py -> build/
lib/gdata/tlslite/integration
copying src/gdata/tlslite/integration/TLSTwistedProtocolWrapper.py ->
build/lib/gdata/tlslite/integration
copying src/gdata/tlslite/integration/XMLRPCTransport.py -> build/lib/
gdata/tlslite/integration
creating build/lib/gdata/tlslite/utils
copying src/gdata/tlslite/utils/__init__.py -> build/lib/gdata/tlslite/
utils
copying src/gdata/tlslite/utils/AES.py -> build/lib/gdata/tlslite/
utils
copying src/gdata/tlslite/utils/ASN1Parser.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/cipherfactory.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/codec.py -> build/lib/gdata/tlslite/
utils
copying src/gdata/tlslite/utils/compat.py -> build/lib/gdata/tlslite/
utils
copying src/gdata/tlslite/utils/Cryptlib_AES.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/Cryptlib_RC4.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/Cryptlib_TripleDES.py -> build/lib/
gdata/tlslite/utils
copying src/gdata/tlslite/utils/cryptomath.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/dateFuncs.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/hmac.py -> build/lib/gdata/tlslite/
utils
copying src/gdata/tlslite/utils/jython_compat.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/keyfactory.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/OpenSSL_AES.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/OpenSSL_RC4.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/OpenSSL_RSAKey.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/OpenSSL_TripleDES.py -> build/lib/
gdata/tlslite/utils
copying src/gdata/tlslite/utils/PyCrypto_AES.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/PyCrypto_RC4.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/PyCrypto_RSAKey.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/PyCrypto_TripleDES.py -> build/lib/
gdata/tlslite/utils
copying src/gdata/tlslite/utils/Python_AES.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/Python_RC4.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/Python_RSAKey.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/RC4.py -> build/lib/gdata/tlslite/
utils
copying src/gdata/tlslite/utils/rijndael.py -> build/lib/gdata/tlslite/
utils
copying src/gdata/tlslite/utils/RSAKey.py -> build/lib/gdata/tlslite/
utils
copying src/gdata/tlslite/utils/TripleDES.py -> build/lib/gdata/
tlslite/utils
copying src/gdata/tlslite/utils/xmltools.py -> build/lib/gdata/tlslite/
utils
creating build/lib/gdata/webmastertools
copying src/gdata/webmastertools/__init__.py -> build/lib/gdata/
webmastertools
copying src/gdata/webmastertools/data.py -> build/lib/gdata/
webmastertools
copying src/gdata/webmastertools/service.py -> build/lib/gdata/
webmastertools
creating build/lib/gdata/youtube
copying src/gdata/youtube/__init__.py -> build/lib/gdata/youtube
copying src/gdata/youtube/client.py -> build/lib/gdata/youtube
copying src/gdata/youtube/data.py -> build/lib/gdata/youtube
copying src/gdata/youtube/service.py -> build/lib/gdata/youtube
running install_lib
running install_egg_info
Removing /Library/Python/2.6/site-packages/gdata-2.0.13-py2.6.egg-info
Writing /Library/Python/2.6/site-packages/gdata-2.0.13-py2.6.egg-info
Users-MacBook-Pro:gdata-2-1.0.13 user$
I then ran the first test mentioned:
Last login: Sat Jan 1 11:38:03 on ttys000
Users-MacBook-Pro:~ user$ ./tests/run_data_tests.py
-bash: ./tests/run_data_tests.py: No such file or directory
Users-MacBook-Pro:~ user$ cd /Users/user/Downloads/gdata-2-1.0.13
Users-MacBook-Pro:gdata-2-1.0.13 user$ ./tests/run_data_tests.py
Running all tests in module gdata_test
.....................
----------------------------------------------------------------------
Ran 21 tests in 0.085s
OK
Running all tests in module atom_test
...............................................
----------------------------------------------------------------------
Ran 47 tests in 0.019s
OK
Running all tests in module atom_tests.url_test
....
----------------------------------------------------------------------
Ran 4 tests in 0.001s
OK
Running all tests in module atom_tests.http_interface_test
.
----------------------------------------------------------------------
Ran 1 test in 0.000s
OK
Running all tests in module atom_tests.mock_http_test
...
----------------------------------------------------------------------
Ran 3 tests in 0.729s
OK
Running all tests in module atom_tests.core_test
................
----------------------------------------------------------------------
Ran 16 tests in 0.008s
OK
Running all tests in module atom_tests.token_store_test
...
----------------------------------------------------------------------
Ran 3 tests in 0.001s
OK
Running all tests in module gdata_tests.client_test
...............
----------------------------------------------------------------------
Ran 15 tests in 0.006s
OK
Running all tests in module gdata_tests.apps_test
...............................................
----------------------------------------------------------------------
Ran 47 tests in 0.028s
OK
Running all tests in module gdata_tests.apps.emailsettings.data_test
.................................
----------------------------------------------------------------------
Ran 33 tests in 0.009s
OK
Running all tests in module gdata_tests.auth_test
.............................
----------------------------------------------------------------------
Ran 29 tests in 0.109s
OK
Running all tests in module gdata_tests.base_test
.....................
----------------------------------------------------------------------
Ran 21 tests in 0.028s
OK
Running all tests in module gdata_tests.books_test
...
----------------------------------------------------------------------
Ran 3 tests in 0.001s
OK
Running all tests in module gdata_tests.calendar_test
............................................................
----------------------------------------------------------------------
Ran 60 tests in 0.361s
OK
Running all tests in module gdata_tests.docs_test
....F...
======================================================================
FAIL: testToAndFromStringWithData
(gdata_tests.docs_test.DocumentListEntryTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/Users/user/Downloads/gdata-2-1.0.13/tests/gdata_tests/
docs_test.py", line 39, in testToAndFromStringWithData
'spreadsheet%3Asupercalifragilisticexpealidocious')
AssertionError: 'https://docs.google.com/feeds/documents/private/full/
spreadsheet%3Asupercalifragilisticexpealidocious' != 'http://
docs.google.com/feeds/documents/private/full/spreadsheet
%3Asupercalifragilisticexpealidocious'
----------------------------------------------------------------------
Ran 8 tests in 0.012s
FAILED (failures=1)
Running all tests in module gdata_tests.health_test
...............
----------------------------------------------------------------------
Ran 15 tests in 0.195s
OK
Running all tests in module gdata_tests.spreadsheet_test
...........
----------------------------------------------------------------------
Ran 11 tests in 0.012s
OK
Running all tests in module gdata_tests.photos_test
...
----------------------------------------------------------------------
Ran 3 tests in 0.007s
OK
Running all tests in module gdata_tests.codesearch_test
.
----------------------------------------------------------------------
Ran 1 test in 0.004s
OK
Running all tests in module gdata_tests.contacts_test
.......
----------------------------------------------------------------------
Ran 7 tests in 0.009s
OK
Running all tests in module gdata_tests.youtube_test
................
----------------------------------------------------------------------
Ran 16 tests in 0.019s
OK
Running all tests in module gdata_tests.blogger_test
......
----------------------------------------------------------------------
Ran 6 tests in 0.002s
OK
Running all tests in module gdata_tests.webmastertools_test
.............................
----------------------------------------------------------------------
Ran 29 tests in 0.016s
OK
Running all tests in module gdata_tests.calendar_resource.data_test
..
----------------------------------------------------------------------
Ran 2 tests in 0.003s
OK
Running all tests in module gdata_tests.oauth.data_test
............../Library/Python/2.6/site-packages/gdata/oauth/
__init__.py:16: DeprecationWarning: BaseException.message has been
deprecated as of Python 2.6
self.message = message
.........................
----------------------------------------------------------------------
Ran 39 tests in 0.038s
OK
Users-MacBook-Pro:gdata-2-1.0.13 user$
Worried by the FAILURE up there, I ran the next test mentioned:
Last login: Sat Jan 1 11:42:38 on ttys000
Users-MacBook-Pro:~ user$ cd /Users/user/Downloads/gdata-2-1.0.13
Users-MacBook-Pro:gdata-2-1.0.13 user$ ./samples/docs/docs_example.py
NOTE: Please run these tests only with a test account.
Please enter your username: User
Password:
Document List Sample
1) List your documents.
2) Search your documents.
3) Upload a document.
4) Download a document.
5) List a document's permissions.
6) Add/change a document's permissions.
7) Exit.
> 1
Retrieve (all/document/folder/presentation/spreadsheet/pdf):
Enter a category: spreadsheets
No entries in feed.
TITLE TYPE RESOURCE ID
Document List Sample
1) List your documents.
2) Search your documents.
3) Upload a document.
4) Download a document.
5) List a document's permissions.
6) Add/change a document's permissions.
7) Exit.
> 1
Retrieve (all/document/folder/presentation/spreadsheet/pdf):
Enter a category: all
TITLE TYPE RESOURCE ID
Whirld spreadsheet spreadsheet:--removed ID--
Whirld Stats spreadsheet spreadsheet:--removed ID--
Document List Sample
1) List your documents.
2) Search your documents.
3) Upload a document.
4) Download a document.
5) List a document's permissions.
6) Add/change a document's permissions.
7) Exit.
一切似乎都很好，除了神秘的失败，所以我尝试运行一些代码，看看我是否可以初始化一个 DocsService：
import cgi
from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app
import gdata.docs
import gdata.docs.service
class MainPage(webapp.RequestHandler):
def post(self):
self.Test = self.request.get('Test')
self.respond(bool(1))
def get(self):
self.respond(bool(0))
def respond(self,isPost):
if isPost:
self.response.out.write("""Greetings. The value of Test is""" +
self.Test)
else:
self.response.out.write("""ERROR -- Post data not given!""")
#gd_client = gdata.docs.service.DocsService(source='[removed]')
self.response.out.write("""Hahahahaha""")
application = webapp.WSGIApplication([ ('/', MainPage) ], debug=True)
#Run the basic code:
def main():
run_wsgi_app(application)
if __name__ == "__main__":
main()
但是，当从谷歌应用引擎启动该代码，然后在 safari 中查看它时，我很高兴：
Traceback (most recent call last):
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/
GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/
google/appengine/tools/dev_appserver.py", line 3245, in _HandleRequest
self._Dispatch(dispatcher, self.rfile, outfile, env_dict)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/
GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/
google/appengine/tools/dev_appserver.py", line 3186, in _Dispatch
base_env_dict=env_dict)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/
GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/
google/appengine/tools/dev_appserver.py", line 531, in Dispatch
base_env_dict=base_env_dict)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/
GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/
google/appengine/tools/dev_appserver.py", line 2410, in Dispatch
self._module_dict)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/
GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/
google/appengine/tools/dev_appserver.py", line 2320, in ExecuteCGI
reset_modules = exec_script(handler_path, cgi_path, hook)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/
GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/
google/appengine/tools/dev_appserver.py", line 2216, in
ExecuteOrImportScript
exec module_code in script_module.__dict__
File "/Users/user/Documents/Web Projects/Python/HelloWorld/
HelloWorld.py", line 4, in <module>
import gdata.docs
ImportError: No module named gdata.docs
我不确定这里出了什么问题，但任何帮助将不胜感激。