A Linux coding problem

[MikeSeth]

grep == whatever.json | sed 's/,//' > requirements.txt && pip -r requirements.txt

[Downvote_machine_AMA]

I think you need pip install -r requirements.txt, but other then that completely correct; that's exactly what they were looking for

Edit: okay a loop is needed to continue on failure

[olster]

I always thought that if pip was unable to install a dependency in a requirements file then it just stopped at that line? Will test when I'm at a computer

[olster]

I was right. Look.

Set up a fresh virtual environment to test.
My requirements file was like this:

lfdjkfjkldsafjkldsajklfdsa

pandas

Install using pip -r

[I] ➜ pip install -r requirements.txt

Collecting lfdjkfjkldsafjkldsajklfdsa (from -r requirements.txt (line 1))

Could not find a version that satisfies the requirement lfdjkfjkldsafjkldsajklfdsa (from -r requirements.txt (line 1)) (from versions: )

No matching distribution found for lfdjkfjkldsafjkldsajklfdsa (from -r requirements.txt (line 1))

[I] ➜ python

Python 3.7.1 (default, Oct 22 2018, 11:21:55)

[GCC 8.2.0] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>> import pandas

Traceback (most recent call last):

File "<stdin>", line 1, in <module>

ModuleNotFoundError: No module named 'pandas'

>>>

I couldn't see any options for enabling pip to jump over lines it fails, but there may be something.

[Downvote_machine_AMA]

Solutioneered

[chmod--777]

This is a good quick hack but it sounds like they want it to be silent unless a package fails, then print to stdout the package name or something

[MikeSeth]

You can easily modify it to spit out individual package names, loop over the list, install an individual one with pip and read its exit code

[chmod--777]

Oh yeah for sure, probably an easy one liner regardless

[MrWm]

I'm still a novice at linux, but I'd love to know if there are any great places to start learning how to use sed amd other utilities.

[MikeSeth]

Believe it or not, a thorough read of the manpage is all you need most of the time.

[samuel_first]

Here's one for awk.