One of my frustrations when working with Python is that it has been adding very useful FP-inspired tools, but any random library I invoke can pull the rug out f

One of my frustrations when working with Python is that it has been adding very useful FP-inspired tools, but any random library I invoke can pull the rug out from underneath me. I have long felt that retrofitting a language to add support for immutability/FP constructs is better than nothing but significantly worse than starting with immutability as a core principle.