fish-shell/share/completions/python.fish

complete -c python -s B -d 'Don\'t write .py[co] files on import'
complete -c python -s c -x -d "Execute argument as command"
complete -c python -s d -d "Debug on"
complete -c python -s E -d "Ignore environment variables"
complete -c python -s h -l help -d "Display help and exit"
complete -c python -s i -d "Interactive mode after executing commands"
complete -c python -s m -d 'Run library module as a script (terminates option list)' -xa '(python -c "import pkgutil; print(\'\n\'.join([p[1] for p in pkgutil.iter_modules()]))")'
complete -c python -s O -d "Enable optimizations"
complete -c python -o OO -d "Remove doc-strings in addition to the -O optimizations"
complete -c python -s s -d 'Don\'t add user site directory to sys.path'
complete -c python -s S -d "Disable import of site module"
complete -c python -s u -d "Unbuffered input and output"
complete -c python -s v -d "Verbose mode"
complete -c python -s V -d "Display version and exit"
complete -c python -s W -x -d "Warning control" -a "ignore default all module once error"
complete -c python -s x -d 'Skip first line of source, allowing use of non-Unix forms of #!cmd'
complete -c python -f -n '__fish_is_first_token' -a "(__fish_complete_suffix .py)"
complete -c python -f -n '__fish_is_first_token' -a '-' -d 'Read program from stdin'

# Version-specific completions
# We have to detect this at runtime because pyenv etc can change
# what `python` refers to.
complete -c python -n 'python -V 2>&1 | string match -rq "^.*\s2"' -s 3 -d 'Warn about Python 3.x incompatibilities that 2to3 cannot trivially fix'
complete -c python -n 'python -V 2>&1 | string match -rq "^.*\s2"' -s t -d "Warn on mixed tabs and spaces"
complete -c python -n 'python -V 2>&1 | string match -rq "^.*\s2"' -s Q -x -a "old new warn warnall" -d "Division control"
complete -c python -n 'python -V 2>&1 | string match -rq "^.*\s3"' -s q -d 'Don\'t print version and copyright messages on interactive startup'
complete -c python -n 'python -V 2>&1 | string match -rq "^.*\s3"' -s X -x -d 'Set implementation-specific option'
complete -c python -n 'python -V 2>&1 | string match -rq "^.*\s3"' -s b  -d 'Issue warnings about str(bytes_instance), str(bytearray_instance) and comparing bytes/bytearray with str'
complete -c python -n 'python -V 2>&1 | string match -rq "^.*\s3"' -o bb -d 'Issue errors'