lcpy gen Error: Problem Already Exists

Error: Problem 'two_sum' already exists. Use --force to overwrite.

lcpy gen never overwrites silently. A directory named after the problem already exists under the output directory, so generation stops.

Reproduce

lcpy gen -n 1
lcpy gen -n 1
# Error: Problem 'two_sum' already exists. Use --force to overwrite.

Generate somewhere else: pass a different output directory, lcpy gen -n 1 -o practice/week-1.
Regenerate on purpose: add --force. The generated files replace whatever is there, including your edits. If the directory holds a solution you want, copy solution.py out first, regenerate, then copy it back.

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Last modified on August 31, 2026