Hello, It is sometimes tedious to write a dictionary in Python. For example, def register_user(first, last, addr1, addr2): d = {'first': first, 'last': last, 'addr1': addr1, 'addr2': addr2, 'tel': '123-456-789'} requests.post(URL, d) The dict literal contains a lot of duplicated words and quotation marks. Using dict type looks nicer, but still verbose. d = dict(first=first, last=last, addr1=addr1, addr2=addr2, tel='123-456-789') With recent JavaScript, the same object can be written more easily. d = {first, last, addr1, addr2, tel='123-456-789'} How about adding similar syntax to Python? Like raw strings, we can add prefix letters such as '$' to the opening curly brace for the purpose. d = ${first, last, addr1, addr2, tel='123-456-789'} Keys should be valid identifier strings. Other keys raise SyntaxError. I wrote a simple POC implementation here. It looks working. https://github.com/atsuoishimoto/cpython/pull/2 (I prefer to use `j` for the prefix over `$`, but I may need to study the parser more to use an ASCII letter as token.)