[Types-sig] File Protocol Proposal

[Paul Prescod]

Writefile objects will be required only to have a .write() method.

Readfile objects will be required only to have a .read([size]) method.

Users will be strongly encouraged to inherit from base classes that
define other methods (e.g. readlines) in terms of the required method.
e.g.

class UserReadFile:
	def close():
		self.closed=true

	def flush():
		pass

	def isatty():
		return false

	def readline():
		while not self.closed and char is not newline:
			read()

	def readlines():
		read a buncha lines...

	def read():
		raise NotImplementedException


-- 
Python:
    Programming the way
    Guido
    indented it.
       - (originated with Skip Montanaro?)