Package all this up?

What this Python dependency-resolution interview question tests

This is a medium-difficulty question about Python packaging and dependency management. It assesses whether you understand how package managers resolve version constraints in real-world projects, and what can go wrong when loose specifiers and transitive dependencies interact at scale.

The question rewards knowledge of how pip and similar tools explore the version space, what makes a dependency graph unsatisfiable, and how to diagnose and prevent resolution failures in practice. It's the kind of problem quant teams encounter when they inherit large codebases or need to reproducibly deploy complex environments across machines.

• Transitive dependencies and constraint propagation
• Version specifier syntax and loose vs. strict pinning
• Backtracking and exhaustive search in resolver algorithms
• Dependency hell and conflicting version ranges