错误：'elasticsearch'后端需要安装'requests'。我该如何修复它？

Question

在使用 Haystack 和 Elasticsearch 支持应用程序时，运行 "python manage.py rebuild_index" 命令时出现了问题。

Python 版本为 2.7，Django 版本为 1.6.2，Haystack 版本为 2.1.0，Elasticsearch 版本为 1.0。

以下是出现的错误：

Traceback (most recent call last): File "manage.py", line 10, in execute_from_command_line(sys.argv) File "/usr/lib/python2.7/site-packages/django/core/management/__init__.py", line 399, in execute_from_command_line utility.execute() File "/usr/lib/python2.7/site-packages/django/core/management/__init__.py", line 392, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/usr/lib/python2.7/site-packages/django/core/management/base.py", line 242, in run_from_argv self.execute(*args, **options.__dict__) File "/usr/lib/python2.7/site-packages/django/core/management/base.py", line 285, in execute output = self.handle(*args, **options) File "/usr/lib/python2.7/site-packages/haystack/management/commands/rebuild_index.py", line 15, in handle call_command('clear_index', **options) File "/usr/lib/python2.7/site-packages/django/core/management/__init__.py", line 159, in call_command return klass.execute(*args, **defaults) File "/usr/lib/python2.7/site-packages/django/core/management/base.py", line 285, in execute output = self.handle(*args, **options) File "/usr/lib/python2.7/site-packages/haystack/management/commands/clear_index.py", line 48, in handle backend = connections[backend_name].get_backend() File "/usr/lib/python2.7/site-packages/haystack/utils/loading.py", line 98, in __getitem__ self._connections[key] = load_backend(self.connections_info[key]['ENGINE'])(using=key) File "/usr/lib/python2.7/site-packages/haystack/utils/loading.py", line 51, in load_backend return import_class(full_backend_path) File "/usr/lib/python2.7/site-packages/haystack/utils/loading.py", line 18, in import_class module_itself = importlib.import_module(module_path) File "/usr/lib/python2.7/site-packages/django/utils/importlib.py", line 40, in import_module __import__(name) File "/usr/lib/python2.7/site-packages/haystack/backends/elasticsearch_backend.py", line 21, in raise MissingDependency("The 'elasticsearch' backend requires the installation of 'requests'.") haystack.exceptions.MissingDependency: The 'elasticsearch' backend requires the installation of 'requests'。

我已经安装了运行这些应用程序所需的所有软件包，但是它还在要求 requests。那是什么？

- ultraInstinct

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顺便问一下，你是如何安装django-haystack的？ - Aamir Rind

你确定已经安装了requests吗？尝试运行 pip install requests。另外，如果你没有在虚拟环境中运行这个程序，建议你使用虚拟环境来更好地管理依赖项并避免项目之间的冲突。 - patsweet

Answer 1

只是去做

pip install pyelasticsearch

- carlitux

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这个技巧对我很有用。上述命令安装了以下软件包： Installing collected packages: certifi, urllib3, elasticsearch, simplejson, six, pyelasticsearch因此问题可能是由于缺少依赖项（我强烈怀疑是urllib3）引起的。 - JDP

Answer 2

如果你只是通过pip安装requests模块，那么这个错误就会消失。

- Aamir Rind

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不幸的是，requests已经安装了（甚至在虚拟环境中卸载/重新安装以确保），但它仍然无法工作。 - vinyll

可能是虚拟环境的问题。请确保环境已激活，或者在安装了 haystack 的位置安装 requests。 - Aamir Rind

Answer 3

pip install "elasticsearch>=7,<8"

- soField