以编程方式检查Python依赖是否满足 [英] Programmatically check if Python dependencies are satisfied

问题描述

我想以编程方式运行 pip ，并确定当前的virtualenv环境是否符合指定的 requirements.txt 文件。我并不讨厌运行 pip 或任何东西，但我认为，因为它可以读取 requires.txt 类文件，这将是一个好的开始。

I'd like to programmatically run pip and determine whether the current virtualenv environment complies with a specified requirements.txt file. I'm not fussed about running pip or anything, but I thought since it can read requirements.txt-like files, it would be a good start.

但是，我甚至没有找到一种有效运行 pip 从命令行。 pip install -r requirements.txt --no-install 被建议在某处，但它下载每个包，即使这不是一个问题，我不确定如何解释其输出是否满足所有依赖关系。

However, I haven't even found a way of effectively running pip from the command line. pip install -r requirements.txt --no-install was suggested somewhere, but it downloads each package and even if this wasn't a problem, I am unsure of how to interpret its output as to whether or not all dependencies are satisfied.

推荐答案

这篇文章对于获取模块列表有很多好的建议。您可以使用以下代码打印出所有缺少的模块：

This post has a lot of good suggestions for getting a list of modules. You can use the below code to print out all missing modules:

from pkgutil import iter_modules
modules = set(x[1] for x in iter_modules())

with open('requirements.txt', 'rb') as f:
    for line in f:
        requirement = line.rstrip()
        if not requirement in modules:
            print requirement

这篇关于以编程方式检查Python依赖是否满足的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！