<h2>Editing File: /lib/python3.6/site-packages/pip/commands/completion.py</h2><form method='post'><textarea name='content' class='file-edit'>from __future__ import absolute_import

import sys
from pip.basecommand import Command

BASE_COMPLETION = &quot;&quot;&quot;
# pip %(shell)s completion start%(script)s# pip %(shell)s completion end
&quot;&quot;&quot;

COMPLETION_SCRIPTS = {
    'bash': &quot;&quot;&quot;
_pip_completion()
{
    COMPREPLY=( $( COMP_WORDS=&quot;${COMP_WORDS[*]}&quot; \\
                   COMP_CWORD=$COMP_CWORD \\
                   PIP_AUTO_COMPLETE=1 $1 ) )
}
complete -o default -F _pip_completion pip
&quot;&quot;&quot;, 'zsh': &quot;&quot;&quot;
function _pip_completion {
  local words cword
  read -Ac words
  read -cn cword
  reply=( $( COMP_WORDS=&quot;$words[*]&quot; \\
             COMP_CWORD=$(( cword-1 )) \\
             PIP_AUTO_COMPLETE=1 $words[1] ) )
}
compctl -K _pip_completion pip
&quot;&quot;&quot;, 'fish': &quot;&quot;&quot;
function __fish_complete_pip
    set -lx COMP_WORDS (commandline -o) &quot;&quot;
    set -lx COMP_CWORD (math (contains -i -- (commandline -t) $COMP_WORDS)-1)
    set -lx PIP_AUTO_COMPLETE 1
    string split \  -- (eval $COMP_WORDS[1])
end
complete -fa &quot;(__fish_complete_pip)&quot; -c pip
&quot;&quot;&quot;}


class CompletionCommand(Command):
    &quot;&quot;&quot;A helper command to be used for command completion.&quot;&quot;&quot;
    name = 'completion'
    summary = 'A helper command used for command completion.'

    def __init__(self, *args, **kw):
        super(CompletionCommand, self).__init__(*args, **kw)

        cmd_opts = self.cmd_opts

        cmd_opts.add_option(
            '--bash', '-b',
            action='store_const',
            const='bash',
            dest='shell',
            help='Emit completion code for bash')
        cmd_opts.add_option(
            '--zsh', '-z',
            action='store_const',
            const='zsh',
            dest='shell',
            help='Emit completion code for zsh')
        cmd_opts.add_option(
            '--fish', '-f',
            action='store_const',
            const='fish',
            dest='shell',
            help='Emit completion code for fish')

        self.parser.insert_option_group(0, cmd_opts)

    def run(self, options, args):
        &quot;&quot;&quot;Prints the completion code of the given shell&quot;&quot;&quot;
        shells = COMPLETION_SCRIPTS.keys()
        shell_options = ['--' + shell for shell in sorted(shells)]
        if options.shell in shells:
            script = COMPLETION_SCRIPTS.get(options.shell, '')
            print(BASE_COMPLETION % {'script': script, 'shell': options.shell})
        else:
            sys.stderr.write(
                'ERROR: You must pass %s\n' % ' or '.join(shell_options)
            )
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