4 liner to get the list of nuspecs which multi-target. Usage: python nupkg_multitarget <SHIP_FOLDER_LOCATION>

nupkg_multitarget.py

import zipfile, os, re, sys
for nuspec_path in  [(re.sub('(\.)(\d+)\.(\d+)\.(\d+)(.)*','', f) + '.nuspec', sys.argv[1] + '\\' + f) for f in os.listdir(sys.argv[1])]:
    with zipfile.ZipFile(nuspec_path[1], 'r') as nupkg_file, nupkg_file.open(nuspec_path[0]) as nuspec_string: 
        all_targetFrameworks = re.findall('<group targetFramework="(.*?)">', str(nuspec_string.read()))
        if len(all_targetFrameworks) > 1: print(nuspec_path[0] + ": ["+ ", ".join(all_targetFrameworks) + "]")