pytest_complete

# Run something, muting output or redirecting it to the debug stream
# depending on the value of _ARC_DEBUG.
# If ARGCOMPLETE_USE_TEMPFILES is set, use tempfiles for IPC.
__python_argcomplete_run() {
    if [[ -z "${ARGCOMPLETE_USE_TEMPFILES-}" ]]; then
        __python_argcomplete_run_inner "$@"
        return
    fi
    local tmpfile="$(mktemp)"
    _ARGCOMPLETE_STDOUT_FILENAME="$tmpfile" __python_argcomplete_run_inner "$@"
    local code=$?
    cat "$tmpfile"
    rm "$tmpfile"
    return $code
}

__python_argcomplete_run_inner() {
    if [[ -z "${_ARC_DEBUG-}" ]]; then
        "$@" 8>&1 9>&2 1>/dev/null 2>&1
    else
        "$@" 8>&1 9>&2 1>&9 2>&1
    fi
}

_python_argcomplete() {
    local IFS=$'\013'
    local script=""
    if [[ -n "${ZSH_VERSION-}" ]]; then
        local completions
        completions=($(IFS="$IFS" \
            COMP_LINE="$BUFFER" \
            COMP_POINT="$CURSOR" \
            _ARGCOMPLETE=1 \
            _ARGCOMPLETE_SHELL="zsh" \
            _ARGCOMPLETE_SUPPRESS_SPACE=1 \
            __python_argcomplete_run ${script:-${words[1]}}))
        _describe "${words[1]}" completions -o nosort
    else
        local SUPPRESS_SPACE=0
        if compopt +o nospace 2> /dev/null; then
            SUPPRESS_SPACE=1
        fi
        COMPREPLY=($(IFS="$IFS" \
            COMP_LINE="$COMP_LINE" \
            COMP_POINT="$COMP_POINT" \
            COMP_TYPE="$COMP_TYPE" \
            _ARGCOMPLETE_COMP_WORDBREAKS="$COMP_WORDBREAKS" \
            _ARGCOMPLETE=1 \
            _ARGCOMPLETE_SHELL="bash" \
            _ARGCOMPLETE_SUPPRESS_SPACE=$SUPPRESS_SPACE \
            __python_argcomplete_run ${script:-$1}))
        if [[ $? != 0 ]]; then
            unset COMPREPLY
        elif [[ $SUPPRESS_SPACE == 1 ]] && [[ "${COMPREPLY-}" =~ [=/:]$ ]]; then
            compopt -o nospace
        fi
    fi
}
if [[ -z "${ZSH_VERSION-}" ]]; then
    complete -o nospace -o default -o bashdefault -F _python_argcomplete pytest
else
    compdef _python_argcomplete pytest
fi