import re
dt = {'is' : 'are', 'life' : 'butterflies'}
namesRegex = re.compile(r'\w+', re.I)
replaced = namesRegex.sub(lambda m: dt[m.group()] if m.group() in dt else m.group(), "There is no life in the void.")
print(replaced)
aW1wb3J0IHJlCmR0ID0geydpcycgOiAnYXJlJywgJ2xpZmUnIDogJ2J1dHRlcmZsaWVzJ30KbmFtZXNSZWdleCA9IHJlLmNvbXBpbGUocidcdysnLCByZS5JKQpyZXBsYWNlZCA9IG5hbWVzUmVnZXguc3ViKGxhbWJkYSBtOiBkdFttLmdyb3VwKCldIGlmIG0uZ3JvdXAoKSBpbiBkdCBlbHNlIG0uZ3JvdXAoKSwgIlRoZXJlIGlzIG5vIGxpZmUgaW4gdGhlIHZvaWQuIikKcHJpbnQocmVwbGFjZWQp