Stop pip from failing on single package when installing with requirements.txt

Question

I am installing packages from requirements.txt

pip install -r requirements.txt

The requirements.txt file reads:

Pillow

lxml

cssselect

jieba

beautifulsoup

nltk

lxml

is the only package failing to install and this leads to everything failing (expected results as pointed out by larsks in the comments). However, after

lxml

fails

pip

still runs through and downloads the rest of the packages.

From what I understand the

pip install -r requirements.txt

command will fail if any of the packages listed in the

requirements.txt

fail to install.

Is there any argument I can pass when running

pip install -r requirements.txt

to tell it to install what it can and skip the packages that it cannot, or to exit as soon as it sees something fail?

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Answer 1

Running each line with pip install may be a workaround.

cat requirements.txt | xargs -n 1 pip install

Note: -a parameter is not available under MacOS, so old cat is more portable.

Stop pip from failing on single package when installing with requirements.txt

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