用python 3.5安装cPickle

这可能是愚蠢的，但我无法安装python 3.5泊坞窗的cPickle图像

Dockerfile

 FROM python:3.5-onbuild 

requirements.txt

 cpickle 

当我尝试build立图像

 $ docker build -t sample . Sending build context to Docker daemon 3.072 kB Step 1 : FROM python:3.5-onbuild # Executing 3 build triggers... Step 1 : COPY requirements.txt /usr/src/app/ Step 1 : RUN pip install --no-cache-dir -r requirements.txt ---> Running in 016c35a032ee Collecting cpickle (from -r requirements.txt (line 1)) Could not find a version that satisfies the requirement cpickle (from -r requirements.txt (line 1)) (from versions: ) No matching distribution found for cpickle (from -r requirements.txt (line 1)) You are using pip version 7.1.2, however version 8.1.1 is available. You should consider upgrading via the 'pip install --upgrade pip' command. The command '/bin/sh -c pip install --no-cache-dir -r requirements.txt' returned a non-zero code: 1 

Answer 1

cPickle自带的标准库…在Python 2.x. 你在python 3.x，所以如果你想要cPickle ，你可以这样做：

 >>> import _pickle as cPickle 

但是，在3.x中，使用pickle就简单多了。

不需要安装任何东西。 如果在Python 3.x中需要cPickle ，那么这可能是一个错误。

Answer 2

在python3.x cPickle已经从cPickle更改为_pickle。 因此，在python3.x中，如果您想使用cPickle，可以执行以下操作

导入_pickle