(f)
iterate over a file by only using the file object's readline method
iterate over a file by only using the file object's readline method
iterate over a file by only using the file object s readline method
def readline_iterator(f):
    """iterate over a file by only using the file object's readline method"""

    have_newline = False
    while True:
        line = f.readline()

        if not line:
            if have_newline:
                yield ""
            return

        if line.endswith('\n'):
            have_newline = True
        else:
            have_newline = False

        yield line
def readline_iterator ( f ) : have_newline = False while True : line = f . readline ( ) if not line : if have_newline : yield "" return if line . endswith ( '\n' ) : have_newline = True else : have_newline = False yield line