在Docker容器中导入python文件 [英] Importing python file in docker container

问题描述

我正在docker容器中执行一个python文件，并且需要将我放置的所有函数导入一个名为 base_functions 的单独的python文件中。但是，从base_functions import * 写入会引发错误，即 ModuleNotFoundError：没有名为 base_functions的模块，即使 base_functions.py 与主python文件位于同一目录中。我怎样才能做到这一点？我是否需要在settings.ini或其他内容中预先指定要导入的python脚本？

这是Dockerfile的内容：

 从amancevice /熊猫：0.24.1-alpine 
 
 RUN apk更新
 RUN apk添加build-base 
运行apk添加gcc musl-dev libc-dev util-linux-dev linux-headers python3-dev postgresql-libs postgresql-dev git libffi-dev libmemcached-dev zlib-dev \ 
 ca证书zlib-dev jpeg-dev freetype-dev libpng 
 
 RUN pip3 install --upgrade pip 
 COPY requirements.txt。 
 RUN pip3 install -r requirements.txt 
 
复制src / vdp 
 
 WORKDIR / 
 
 ENTRYPOINT [ python3，- m， vdp] 
  

这些都是项目目录中的所有文件：

  / home / cr / docker / 71119 /。 
 
├──docker-compose.yaml 
├──Dockerfile 
├──Makefile 
├──README.md 
├──要求.txt 
├──settings.ini 
└──src 
├──base_functions.py 
├──influx.py 
├──__init__.py 
└──__main__.py 
  

解决方案

您实际上是在重命名您的软件包（闻起来像一个软件包，具有 __ init __。py 和 __ main __。py ）

我建议：

• 将 src /...重命名为 src / vdp /...（或 vdp /...）
  –此时，您应该可以在 python -m vdp 中运行主机上的 src 目录，并且一切正常。


• 将Dockerfile节更改为
  
  复制src / src

WORKDIR / src

ENTRYPOINT [ python3，-m， vdp]
  
  –此等同于您在主机上运行它的方式。

另一种选择是删除 / src 并将其更改为 COPY vdp / src / vdp 。

当然，第三个选择是设置适当的Python封装，让您的 setup.py 构造一个适当的轮子，然后将其安装在Docker容器中。 / p>

I'm executing a python file inside a docker container, and need to import all the functions that I put into a separate python file called base_functions. However, writing from base_functions import * throws the error, that ModuleNotFoundError: No module named 'base_functions', even though base_functions.py is in the same directory as the main python file. How can I do this? Do I need to specify which python scripts I want to import beforehand, in the settings.ini or something?

This is the content of the Dockerfile:

FROM amancevice/pandas:0.24.1-alpine

RUN apk update
RUN apk add build-base
RUN apk add gcc musl-dev libc-dev util-linux-dev linux-headers python3-dev postgresql-libs postgresql-dev git libffi-dev libmemcached-dev zlib-dev \
            ca-certificates zlib-dev jpeg-dev freetype-dev libpng

RUN pip3 install --upgrade pip
COPY requirements.txt .
RUN pip3 install -r requirements.txt

COPY src /vdp

WORKDIR /

ENTRYPOINT ["python3", "-m", "vdp"]

These are all the files in the directory of the project:

/home/cr/docker/71119/.

├── docker-compose.yaml
├── Dockerfile
├── Makefile
├── README.md
├── requirements.txt
├── settings.ini
└── src
    ├── base_functions.py
    ├── influx.py
    ├── __init__.py
    └── __main__.py

解决方案

You're practically renaming your package (it smells like a package, having __init__.py and __main__.py) from "src" to "vdp" when you're creating the dockerfile.

I'd recommend:

• Rename src/... to src/vdp/... (or vdp/...) – at this point you should be able to run python -m vdp within the src directory on your host machine and things should work.
• Change the Dockerfile stanzas to
  COPY src /src
WORKDIR /src
ENTRYPOINT ["python3", "-m", "vdp"]
  – this'd be equivalent to how you're running it on the host machine.

Another option would be to drop the /src in the repository and change things to COPY vdp /src/vdp.

The third option, of course, would be to set up proper Python packaging, have your setup.py build a proper wheel, then simply install that in the Docker container.

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