如何使用 Python 在终端中为数字着色？

Question

I see I can color things using colorama and termcolor .

I'd like to color my numbers using Python formatters:

print("My value is %.2f" % value)

where the number is green if value > 0 otherwise red.

What's the most pythonic way to achieve this?

Answer 1

I don't believe there's anything you can easier/better that colorama or custom wrapper (take a look for this question for reference).

The reason is that python doesn't have great extensibility with string templates/formatting. Terminal output should be escape sequences, and there's no other way around, so you need to modify your output somehow.

One-timer with f-strings may me like:

print(f'Value is {OKGREEN if value > 0 else FAIL} {value}')

If your case allows this, perfect thing would be encapsulating logic to value class (roughly, if you can use subclass of int/float), so you can provide __format__ spec with support for coloring.

If you cant, you'll probably end up with wrapper around print.