Explore replacing __delitem__ with pop for dictionary key removal

[coderabbitai]

Overview

This issue is a follow-up to a suggestion made in PR #330 about improving dictionary key removal patterns in the codebase.

Current Implementation

Currently, dictionary keys are removed using the direct method:

argz.__dict__.__delitem__("cmd_tool")

Proposed Change

Consider replacing with one of these more conventional patterns:

# Option 1:
argz.__dict__.pop("cmd_tool")

# Option 2:
del argz.__dict__["cmd_tool"]

Rationale

• Using standard dictionary methods like improves code readability
• can provide a default value if the key doesn't exist, offering better error handling
• These patterns are more widely used and recognized in the Python community

References

• Suggested in PR #330 code review

/cc @reactive-firewall