• Pip version: 8.1.2
• Python version: 3.5.2
• Operating System: Arch Linux

Description:

pip uninstall <TAB> quickly followed by Ctrl-C causes a traceback (associated with the KeyboardInterrupt) to be printed. This traceback should arguably not be displayed.

A simple fix would be to changepip completion --zsh (and similarly--bash) to

# pip zsh completion startfunction _pip_completion {  local words cword  read -Ac words  read -cn cword  reply=( $( COMP_WORDS="$words[*]" \             COMP_CWORD=$(( cword-1 )) \             PIP_AUTO_COMPLETE=1 $words[1] 2>/dev/null ) ) # note the redirection.}compctl -K _pip_completion pip# pip zsh completion end