import re
rx = r"\bWordcap([^|=]*=.*?)(?=\s*\bWordcap|$)"
s = "Tue Apr 24 22:35:48 2018 53/e33 \nhello:55|Wordcap|abc|abc generate|6|Wordcapdata_proto_req=WINTER Wordcapdata_sample_resp=summer 2.4.5 WordcapTotal_reject=56 WordcapAddition_sum=TEA CUP ONE"
print(re.findall(rx, s))
aW1wb3J0IHJlCnJ4ID0gciJcYldvcmRjYXAoW158PV0qPS4qPykoPz1ccypcYldvcmRjYXB8JCkiCnMgPSAiVHVlIEFwciAyNCAyMjozNTo0OCAyMDE4IDUzL2UzMyBcbmhlbGxvOjU1fFdvcmRjYXB8YWJjfGFiYyBnZW5lcmF0ZXw2fFdvcmRjYXBkYXRhX3Byb3RvX3JlcT1XSU5URVIgV29yZGNhcGRhdGFfc2FtcGxlX3Jlc3A9c3VtbWVyIDIuNC41IFdvcmRjYXBUb3RhbF9yZWplY3Q9NTYgV29yZGNhcEFkZGl0aW9uX3N1bT1URUEgQ1VQIE9ORSIKcHJpbnQocmUuZmluZGFsbChyeCwgcykp