import re
array = ['GW-date45:ger-date45:mySAPgives','DC-date48ccc:date48:mySAP']
hostname = []
for node in array:
m = re.search(r'^[^-]*-([^:]+)', node)
if m:
hostname.append(m.group(1))
for line in hostname:
print(line)
aW1wb3J0IHJlCmFycmF5ID0gWydHVy1kYXRlNDU6Z2VyLWRhdGU0NTpteVNBUGdpdmVzJywnREMtZGF0ZTQ4Y2NjOmRhdGU0ODpteVNBUCddCmhvc3RuYW1lID0gW10KZm9yIG5vZGUgaW4gYXJyYXk6CgltID0gcmUuc2VhcmNoKHInXlteLV0qLShbXjpdKyknLCBub2RlKQoJaWYgbToKCQlob3N0bmFtZS5hcHBlbmQobS5ncm91cCgxKSkKCmZvciBsaW5lIGluIGhvc3RuYW1lOgogICAgcHJpbnQobGluZSk=