Remove Reader.__iter__() and readline()

Author: srittau

Doc/library/typing.rst

@@ -2830,22 +2830,11 @@ decorated with :func:`@runtime_checkable <runtime_checkable>`.
       Read data from the input stream and return it. If ``size`` is
       specified, at most ``size`` items (bytes/characters) will be read.
 
-   .. method:: readline(size=..., /)
-
-      Read a line of data from the input stream and return it. If ``size`` is
-      specified, at most ``size`` items (bytes/characters) will be read.
-
-   .. method:: __iter__()
-
-      Return an :class:`collections.abc.Iterator` over the lines of data
-      in the input stream.
-
    For example::
 
      def read_it(reader: Reader[str]):
-         assert reader.read(11) == "--marker--\n"
-         for line in reader:
-             print(line)
+         data = reader.read(11)
+         assert isinstance(data, str)
 
 .. class:: Writer[T]
 

Lib/typing.py

@@ -2931,7 +2931,7 @@ def __round__(self, ndigits: int = 0) -> T:
         pass
 
 
-class Reader[T](Iterable[T], Protocol):
+class Reader[T](Protocol):
     """Protocol for simple I/O reader instances.
 
     This protocol only supports blocking I/O.
@@ -2947,14 +2947,6 @@ def read(self, size: int = ..., /) -> T:
         read.
         """
 
-    @abstractmethod
-    def readline(self, size: int = ..., /) -> T:
-        """Read a line of data from the input stream and return it.
-
-        If "size" is specified, at most "size" items (bytes/characters) will be
-        read.
-        """
-
 
 class Writer[T](Protocol):
     """Protocol for simple I/O writer instances.