Python Ansible更新仍显示旧版本

我在Debian 8服务器上将ansible从2.0版升级到2.3.1版，并遵循ansible提供的说明：

添加到源列表：

debhttp://ppa.launchpad.net/ansible/ansible/ubuntu 可靠的主机

运行以下命令：

sudo apt key adv--keyserver keyserver.ubuntu.com--recv key 93C4A3FD7BB9C367
更新源
sudo apt get install ansible

我选中了ansible的

，显示指向/usr/local/bin。
当我运行echo$PATH时，我看到列出了/usr/local/bin。我需要运行额外的步骤来获得Ansible的正确版本吗

我现在没有输出。但当我运行apt时，它成功地更新为ansible 2.3.1

更新：ansible最初是通过pip安装的。当我运行'pip install--upgrade ansible时，我得到：

  Running setup.py (path:/tmp/pip-build-jyjjV6/cryptography/setup.py) egg_info for package cryptography

    no previously-included directories found matching 'docs/_build'
    warning: no previously-included files matching '*' found under directory 'vectors'
Downloading/unpacking pynacl>=1.0.1 (from paramiko->ansible)
  Downloading PyNaCl-1.1.2.tar.gz (3.1MB): 3.1MB downloaded
  Running setup.py (path:/tmp/pip-build-jyjjV6/pynacl/setup.py) egg_info for package pynacl
    c/_cffi_backend.c:15:17: fatal error: ffi.h: No such file or directory
     #include <ffi.h>
                     ^
    compilation terminated.
    Traceback (most recent call last):
      File "<string>", line 17, in <module>
      File "/tmp/pip-build-jyjjV6/pynacl/setup.py", line 232, in <module>
        "Programming Language :: Python :: 3.6",
      File "/usr/lib/python2.7/distutils/core.py", line 111, in setup
        _setup_distribution = dist = klass(attrs)
      File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 268, in __init__
        self.fetch_build_eggs(attrs['setup_requires'])
      File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 312, in fetch_build_eggs
        replace_conflicting=True,
      File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 846, in resolve
        dist = best[req.key] = env.best_match(req, ws, installer)
      File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 1091, in best_match
        return self.obtain(req, installer)
      File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 1103, in obtain
        return installer(requirement)
      File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 379, in fetch_build_egg
        return cmd.easy_install(req)
      File "/usr/local/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 639, in easy_install
        return self.install_item(spec, dist.location, tmpdir, deps)
      File "/usr/local/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 669, in install_item
        dists = self.install_eggs(spec, download, tmpdir)
      File "/usr/local/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 852, in install_eggs
        return self.build_and_install(setup_script, setup_base)
      File "/usr/local/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 1080, in build_and_install
        self.run_setup(setup_script, setup_base, args)
      File "/usr/local/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 1068, in run_setup
        raise DistutilsError("Setup script exited with %s" % (v.args[0],))
    distutils.errors.DistutilsError: Setup script exited with error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
    Complete output from command python setup.py egg_info:
    c/_cffi_backend.c:15:17: fatal error: ffi.h: No such file or directory

 #include <ffi.h>

                 ^

compilation terminated.

Traceback (most recent call last):

  File "<string>", line 17, in <module>

  File "/tmp/pip-build-jyjjV6/pynacl/setup.py", line 232, in <module>

    "Programming Language :: Python :: 3.6",

  File "/usr/lib/python2.7/distutils/core.py", line 111, in setup

    _setup_distribution = dist = klass(attrs)

  File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 268, in __init__

    self.fetch_build_eggs(attrs['setup_requires'])

  File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 312, in fetch_build_eggs

    replace_conflicting=True,

  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 846, in resolve

    dist = best[req.key] = env.best_match(req, ws, installer)

  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 1091, in best_match

    return self.obtain(req, installer)

  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 1103, in obtain

    return installer(requirement)

  File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 379, in fetch_build_egg

    return cmd.easy_install(req)

  File "/usr/local/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 639, in easy_install

    return self.install_item(spec, dist.location, tmpdir, deps)

  File "/usr/local/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 669, in install_item

    dists = self.install_eggs(spec, download, tmpdir)

  File "/usr/local/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 852, in install_eggs

    return self.build_and_install(setup_script, setup_base)

  File "/usr/local/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 1080, in build_and_install

    self.run_setup(setup_script, setup_base, args)

  File "/usr/local/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 1068, in run_setup

    raise DistutilsError("Setup script exited with %s" % (v.args[0],))

distutils.errors.DistutilsError: Setup script exited with error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

----------------------------------------
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /tmp/pip-build-jyjjV6/pynacl
Storing debug log for failure in /root/.pip/pip.log

运行setup.py（路径：/tmp/pip-build-jyjv6/cryptography/setup.py）包加密的egg\u信息
未找到与“docs/\u build”匹配的以前包含的目录
警告：在“vectors”目录下找不到以前包含的与“*”匹配的文件
下载/解包pynacl>=1.0.1（从paramiko->ansible）
下载PyNaCl-1.1.2.tar.gz（3.1MB）：下载3.1MB
运行setup.py（路径：/tmp/pip-build-jyjv6/pynacl/setup.py）包pynacl的egg_信息
c/_cffi_backend.c:15:17:致命错误：ffi.h:没有这样的文件或目录
#包括
^
编译终止。
回溯（最近一次呼叫最后一次）：
文件“”，第17行，在
文件“/tmp/pip-build-jyjv6/pynacl/setup.py”，第232行，在
“编程语言：：Python：：3.6”，
文件“/usr/lib/python2.7/distutils/core.py”，第111行，在安装程序中
_设置\u分布=dist=klass（属性）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/dist.py”，第268行，在__
self.fetch\u build\u鸡蛋（attrs['setup\u requires']））
文件“/usr/local/lib/python2.7/dist packages/setuptools/dist.py”，第312行，在fetch\u build\u中
替换_=True，
文件“/usr/local/lib/python2.7/dist packages/pkg_resources/_init__.py”，第846行，在resolve中
dist=best[req.key]=env.best\u匹配（req，ws，installer）
文件“/usr/local/lib/python2.7/dist packages/pkg_resources/_init__.py”，第1091行，最佳匹配
返回自获取（请求，安装程序）
文件“/usr/local/lib/python2.7/dist packages/pkg_resources/_init__.py”，第1103行，获取
返回安装程序（要求）
文件“/usr/local/lib/python2.7/dist packages/setuptools/dist.py”，第379行，在fetch\u build\u egg中
return cmd.easy_安装（需要）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/command/easy\u-install.py”，第639行，在easy\u-install中
返回自安装项目（规格、距离位置、tmpdir、deps）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/command/easy\u install.py”，第669行，在安装项中
dists=self.install_-eggs（规范、下载、tmpdir）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/command/easy\u install.py”，第852行，在install\u中
返回self.build\u和安装（安装程序脚本、安装程序库）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/command/easy\u install.py”，第1080行，内置和安装
self.run\u安装程序（安装程序脚本、安装程序库、参数）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/command/easy\u install.py”，第1068行，在run\u安装程序中
raise DistutilsError（“安装程序脚本退出时带有%s”%（v.args[0]，））
distutils.errors.DistutilsError:安装程序脚本退出，出现错误：命令“x86_64-linux-gnu-gcc”失败，退出状态为1
从命令python setup.py egg_info完成输出：
c/_cffi_backend.c:15:17:致命错误：ffi.h:没有这样的文件或目录
#包括
^
编译终止。
回溯（最近一次呼叫最后一次）：
文件“”，第17行，在
文件“/tmp/pip-build-jyjv6/pynacl/setup.py”，第232行，在
“编程语言：：Python：：3.6”，
文件“/usr/lib/python2.7/distutils/core.py”，第111行，在安装程序中
_设置\u分布=dist=klass（属性）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/dist.py”，第268行，在__
self.fetch\u build\u鸡蛋（attrs['setup\u requires']））
文件“/usr/local/lib/python2.7/dist packages/setuptools/dist.py”，第312行，在fetch\u build\u中
替换_=True，
文件“/usr/local/lib/python2.7/dist packages/pkg_resources/_init__.py”，第846行，在resolve中
dist=best[req.key]=env.best\u匹配（req，ws，installer）
文件“/usr/local/lib/python2.7/dist packages/pkg_resources/_init__.py”，第1091行，最佳匹配
返回自获取（请求，安装程序）
文件“/usr/local/lib/python2.7/dist packages/pkg_resources/_init__.py”，第1103行，获取
返回安装程序（要求）
文件“/usr/local/lib/python2.7/dist packages/setuptools/dist.py”，第379行，在fetch\u build\u egg中
return cmd.easy_安装（需要）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/command/easy\u-install.py”，第639行，在easy\u-install中
返回自安装项目（规格、距离位置、tmpdir、deps）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/command/easy\u install.py”，第669行，在安装项中
dists=self.install_-eggs（规范、下载、tmpdir）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/command/easy\u install.py”，第852行，在install\u中
返回self.build\u和安装（安装程序脚本、安装程序库）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/command/easy\u install.py”，第1080行，内置和安装
self.run\u安装程序（安装程序脚本、安装程序库、参数）
文件“/usr/local/lib/python2.7/dist-packages/setuptools/command/easy\u install.py”，第1068行，在run\u安装程序中
raise DistutilsError（“安装程序脚本退出时带有%s”%（v.args[0]，））
distutils.errors.DistutilsError:安装程序脚本退出，出现错误：命令“x86_64-linux-gnu-gcc”失败，退出状态为1
-----------------------------
Traceback (most recent call last):
  File "/usr/bin/ansible", line 46, in <module>
    from ansible.module_utils._text import to_text
ImportError: No module named _text

pip uninstall --yes ansible
apt install --yes --reinstall ansible