checkPyImport

#!/usr/bin/env bash

#USAGE: checkPyImport packagename
#
#EXAMPLES:
#  #Should return Success and an exit code of 0
#  checkPyImport os
#
#  #Should return Failure, exit code 1 -- "Douglas Adams" != "Monty Python"
#  checkPyImport slartibartfast
#
#  #In a script where you don't want the stdout, do something like:
#  checkPyImport slartibartfast &> /dev/null
#  if [ "$?" = "0" ] ; then 
#    printf "%s\n" "I prefer Douglas Adams too." 
#  else
#    printf "%s\n" "No point calling that Python script"
#  fi
#
#DESCRIPTION:
#  Starts python and imports the requested package before exiting.
#  A message is printed to standard out and the exit code is set 
#  based on success or failure of the import.
#
# Author: Stuart A. Knock
# Originally Written: 2015-11-25
# https://github.com/stuart-knock/bash-tools
#

#TODO: Add some extra checks and messages, maybe add a verbosity flag...
#local pathtopython=$(which python)
#which python &> /dev/null ; test "$?" = "0" || printf "%s\n" "Can't find python..."

printf "Testing if python can import %s: " "$1"
python -c "import $1 ; exit()" &> /dev/null
if [ "$?" = "0" ] ; then
  printf "%s\n" "Success"
  exit 0
else
  printf "%s\n"  "Failure"
  exit 1
fi