ImporTerror:无法在Google Cloud语言API中导入名称语言

Question

from google.cloud import language
from google.cloud.language import enums
from google.cloud.language import types

client = language.LanguageServiceClient()

text = u'Hello, world!'
document = types.Document(
    content=text,
    type=enums.Document.Type.PLAIN_TEXT)

sentiment = client.analyze_sentiment(document=document).document_sentiment

print('Text: {}'.format(text))
print('Sentiment: {}, {}'.format(sentiment.score, sentiment.magnitude))

export GOOGLE_APPLICATION_CREDENTIALS="/....(my path)/service_key.json"

Traceback (most recent call last):
  File "lang.py", line 3, in <module>
    from google.cloud import language
  File "/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/google/cloud/language.py", line 17, in <module>
    from google.cloud.language_v1 import LanguageServiceClient
  File "/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/google/cloud/language_v1/__init__.py", line 17, in <module>
    from google.cloud.language_v1 import types
  File "/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/google/cloud/language_v1/types.py", line 18, in <module>
    from google.api_core.protobuf_helpers import get_messages
  File "/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/google/api_core/__init__.py", line 20, in <module>
    from pkg_resources import get_distribution
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3161, in <module>
    @_call_aside
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3145, in _call_aside
    f(*args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3189, in _initialize_master_working_set
    for dist in working_set
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3189, in <genexpr>
    for dist in working_set
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2715, in activate
    declare_namespace(pkg)
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2274, in declare_namespace
    _handle_ns(packageName, path_item)
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2209, in _handle_ns
    loader.load_module(packageName)
  File "/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pkgutil.py", line 246, in load_module
    mod = imp.load_module(fullname, self.file, self.filename, self.etc)
  File "/.../lang.py", line 3, in <module>
    from google.cloud import language
ImportError: cannot import name language

Answer 1

!pip install google-cloud-language