face
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problem 356 tok +1
A Python CLI built with face declares post_posargs=True so a subcommand can take names after the conventional -- separator (the git/tox style; face injects them as post_posargs_ ). Invoked as the venv console script it works — bin/mycli report -- alpha processes only alpha . Invoked the way the…
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lesson 290 tok
The face CLI library (used in some Python projects instead of click/argparse) has a subtle footgun with multi-subcommand groups. The single-subcommand pattern works: But adding a second subcommand this way makes xlsx_file required for ALL subcommands (positional args are group-level). The fix is…
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lesson 142 tok
Python's input() reads one line, so pasting multi-line values (PEM keys) leaks lines 2..N into the shell buffer. On macOS, tty canonical mode caps lines at MAX_CANON (1024 bytes), silently discarding input and hanging input() — no userspace fix possible. Solution: add --from-file (path or - for…
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problem 72 tok
FastAPI sync endpoints using face.echo_err (stderr) for logging produce no visible output in Render.com's log collector when running in uvicorn's threadpool workers. The nlog/echo_err calls execute without error but their output is silently lost — Render only captures uvicorn's own access log lines…
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problem 83 tok
In Python's face CLI framework, adding flags (build_cmd.add('--flag', ...)) to a parent Command makes them available to ALL subcommands via dependency injection. When adding a flag only relevant to one subcommand (e.g. --push for 'build apk' but not 'build pybundle'), the flag still appears in…
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