python在ec2实例上找不到包

Question

我正在尝试使用 jenkins 在 aws ec2-instance 上运行 python 脚本。

我收到以下错误：

[ProdTest] $ /bin/sh -xe /tmp/jenkins14047325752732522807.sh
+ python3 prod.py
Traceback (most recent call last):
  File "prod.py", line 2, in <module>
    import base
  File "/home/jenkins-slave-strat/workspace/ProdTest/base.py", line 3, in <module>
    import boto3
ModuleNotFoundError: No module named 'boto3'
Build step 'Execute shell' marked build as failure
Finished: FAILURE

在 ec2 实例上：

$ python3 --version
Python 3.7.9

$ pip3 install boto3 --user
WARNING: pip is being invoked by an old script wrapper. This will fail in a future version of pip.
Please see https://github.com/pypa/pip/issues/5599 for advice on fixing the underlying issue.
To avoid this problem you can invoke Python with '-m pip' instead of running pip directly.
Requirement already satisfied: boto3 in /usr/local/lib/python3.7/site-packages (1.16.25)
Requirement already satisfied: jmespath<1.0.0,>=0.7.1 in /usr/local/lib/python3.7/site-packages (from boto3) (0.10.0)
Requirement already satisfied: s3transfer<0.4.0,>=0.3.0 in /usr/local/lib/python3.7/site-packages (from boto3) (0.3.3)
Requirement already satisfied: botocore<1.20.0,>=1.19.25 in /usr/local/lib/python3.7/site-packages (from boto3) (1.19.25)
Requirement already satisfied: urllib3<1.27,>=1.25.4; python_version != "3.4" in /usr/local/lib/python3.7/site-packages (from botocore<1.20.0,>=1.19.25->boto3) (1.26.2)
Requirement already satisfied: python-dateutil<3.0.0,>=2.1 in /usr/local/lib/python3.7/site-packages (from botocore<1.20.0,>=1.19.25->boto3) (2.8.1)
Requirement already satisfied: six>=1.5 in /usr/local/lib/python3.7/site-packages (from python-dateutil<3.0.0,>=2.1->botocore<1.20.0,>=1.19.25->boto3) (1.15.0)

如何让 python 访问 /usr/local/lib/python3.7/site-packages 中的包？

感谢大家抽出宝贵时间！

Answer 1

在给出简短回答之前，请注意几点：

1. 我不知道 EC2 实例运行的是哪个版本的 Linux（我假设）。
2. 因此，不清楚是否安装了 Python 2，但由于您使用的是 pip3 而不仅仅是 pip，所以看起来可能是。

您可以尝试更改 $PATH 变量，但通常认为使用 Python 的虚拟环境是一种好习惯。我个人是 Conda 的粉丝，但您也可以找到 Pipenv 的指南。我的建议是； 通过 Miniconda 安装 Conda，然后执行以下操作：

$ conda create --name myAppEnv python=your.python.version
$ conda activate myAppEnv
$ conda install [your libraries]