import re
# Replace each series of non-space characters [^\s]+ with "newword"
sentence = 'hello world'
sentence = re.sub(r'[^\s]+','newword',sentence)
print(sentence)
aW1wb3J0IHJlCiMgUmVwbGFjZSBlYWNoIHNlcmllcyBvZiBub24tc3BhY2UgY2hhcmFjdGVycyBbXlxzXSsgd2l0aCAibmV3d29yZCIKc2VudGVuY2UgPSAnaGVsbG8gd29ybGQnCnNlbnRlbmNlID0gcmUuc3ViKHInW15cc10rJywnbmV3d29yZCcsc2VudGVuY2UpCnByaW50KHNlbnRlbmNlKQ==