def split_tag(tag):
 version = tag.split('--', 1)[0]
 build = tag.split('--', 1)[1]
 return (version, build)

def split_tag ( tag ) : version = tag . split ( '--' , 1 ) [ 0 ] build = tag . split ( '--' , 1 ) [ 1 ] return ( version , build )
split mulled image name into conda version and conda build .