Ubuntu: No module named pip

最新推荐文章于 2025-03-31 19:43:29 发布

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最新推荐文章于 2025-03-31 19:43:29 发布

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博主在使用Python2为ROS编写RL测试脚本时遇到pip模块缺失的问题。通过执行`python-m ensurepip`、`sudo apt --fix-broken install`和`sudo apt-get install python-pip`等命令，成功修复了pip并安装了gym库及相关依赖。过程中遇到了缓存错误，但最终安装完成。

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最近在用python2.X为ros写RL的测试脚本，总之发现Ubuntu上的python2使用pip时出现No module named pip，但是我的python2是可以成功启动的。于是乎，我先是

$ python -m ensurepip

然后蹦出来一堆：

ensurepip is disabled in Debian/Ubuntu for the system python.

Python modules For the system python are usually handled by dpkg and apt-get.

    apt-get install python-<module name>

Install the python-pip package to use pip itself.  Using pip together
with the system python might have unexpected results for any system installed
module, so use it on your own risk, or make sure to only use it in virtual
environments.

我猜测是不是安装模块损坏了，于是乎运行：

$ sudo apt --fix-broken install

然后重新安装一下pip：

$ sudo apt-get install python-pip

最后测试一下能不能正常使用：

$ python -m pip install gym

Collecting gym
  Cache entry deserialization failed, entry ignored
  Downloading https://mirrors.aliyun.com/pypi/packages/14/d3/d683fb120771489ae0a49bbaf6085942751c039f5f5e02e9775b7883c377/gym-0.16.0.tar.gz (1.6MB)
    100% |████████████████████████████████| 1.6MB 661kB/s 
Collecting cloudpickle~=1.2.0 (from gym)
  Cache entry deserialization failed, entry ignored
  Downloading https://mirrors.aliyun.com/pypi/packages/c1/49/334e279caa3231255725c8e860fa93e72083567625573421db8875846c14/cloudpickle-1.2.2-py2.py3-none-any.whl
Collecting numpy>=1.10.4 (from gym)
  Cache entry deserialization failed, entry ignored
  Downloading https://mirrors.aliyun.com/pypi/packages/3a/5f/47e578b3ae79e2624e205445ab77a1848acdaa2929a00eeef6b16eaaeb20/numpy-1.16.6-cp27-cp27mu-manylinux1_x86_64.whl (17.0MB)
    100% |████████████████████████████████| 17.0MB 109kB/s 
Collecting pyglet<=1.5.0,>=1.4.0 (from gym)
  Cache entry deserialization failed, entry ignored
  Cache entry deserialization failed, entry ignored
  Downloading https://mirrors.aliyun.com/pypi/packages/70/ca/20aee170afe6011e295e34b27ad7d7ccd795faba581dd3c6f7cec237f561/pyglet-1.5.0-py2.py3-none-any.whl (1.0MB)
    100% |████████████████████████████████| 1.0MB 1.7MB/s 
Collecting scipy (from gym)
  Cache entry deserialization failed, entry ignored
  Downloading https://mirrors.aliyun.com/pypi/packages/24/40/11b12af7f322c1e20446c037c47344d89bab4922b8859419d82cf56d796d/scipy-1.2.3-cp27-cp27mu-manylinux1_x86_64.whl (24.8MB)
    100% |████████████████████████████████| 24.8MB 75kB/s 
Collecting six (from gym)
  Cache entry deserialization failed, entry ignored
  Cache entry deserialization failed, entry ignored
  Downloading https://mirrors.aliyun.com/pypi/packages/ee/ff/48bde5c0f013094d729fe4b0316ba2a24774b3ff1c52d924a8a4cb04078a/six-1.15.0-py2.py3-none-any.whl
Collecting enum34~=1.1.6 (from gym)
  Downloading https://mirrors.aliyun.com/pypi/packages/6f/2c/a9386903ece2ea85e9807e0e062174dc26fdce8b05f216d00491be29fad5/enum34-1.1.10-py2-none-any.whl
Collecting future (from pyglet<=1.5.0,>=1.4.0->gym)
  Cache entry deserialization failed, entry ignored
  Cache entry deserialization failed, entry ignored
  Downloading https://mirrors.aliyun.com/pypi/packages/45/0b/38b06fd9b92dc2b68d58b75f900e97884c45bedd2ff83203d933cf5851c9/future-0.18.2.tar.gz (829kB)
    100% |████████████████████████████████| 829kB 979kB/s 
Building wheels for collected packages: gym, future
  Running setup.py bdist_wheel for gym ... done
  Stored in directory: /home/tianbot/.cache/pip/wheels/fe/04/2e/d02ccebb2d7b7127e8ab55190c70603f9658b13b5cff648d6b
  Running setup.py bdist_wheel for future ... done
  Stored in directory: /home/tianbot/.cache/pip/wheels/24/8f/e1/d0ff0db4b549668bcb3e3f2eaed50cdd35e3621ee69ea5dac0
Successfully built gym future
Installing collected packages: cloudpickle, numpy, future, pyglet, scipy, six, enum34, gym
Successfully installed cloudpickle-1.2.2 enum34-1.1.10 future-0.18.2 gym-0.16.0 numpy-1.16.6 pyglet-1.5.0 scipy-1.2.3 six-1.15.0

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