frase = "A B C D e f g h".split()
novo = []
for i in frase:
if i.isupper():
novo.append(i)
print(novo)
#https://pt.stackoverflow.com/q/466737/101
ZnJhc2UgPSAiQSBCIEMgRCBlIGYgZyBoIi5zcGxpdCgpCm5vdm8gPSBbXQpmb3IgaSBpbiBmcmFzZToKICAgIGlmIGkuaXN1cHBlcigpOgogICAgICAgIG5vdm8uYXBwZW5kKGkpCnByaW50KG5vdm8pCgojaHR0cHM6Ly9wdC5zdGFja292ZXJmbG93LmNvbS9xLzQ2NjczNy8xMDE=