[PyQt] Converting to API 2

[Mark Summerfield]

Hi,

I'm starting to convert the examples from my PyQt book to Python 3 with
API 2. Perhaps I'm not awake yet, but I'm puzzled by this:

    Python 3.1.2 (r312:79147, Mar 25 2010, 07:42:02) 
    [GCC 4.4.1] on linux2
    Type "copyright", "credits" or "license()" for more information.
    >>> from PyQt4.QtCore import *
    >>> from PyQt4.QtGui import *
    >>> PYQT_VERSION_STR
    '4.7.3'
    >>> QT_VERSION_STR
    '4.6.1'
    >>> fh = QFile("/tmp/data")
    >>> fh.open(QIODevice.WriteOnly)
    True
    >>> out = QDataStream(fh)
    >>> out.writeString("hello")
    Traceback (most recent call last):
    File "<pyshell#5>", line 1, in <module>
	out.writeString("hello")
    TypeError: QDataStream.writeString(str): argument 1 has unexpected type 
'str'

And also by this:

    >>> fh = QFile("/tmp/data")
    >>> fh.open(QIODevice.WriteOnly)
    True
    >>> out = QDataStream(fh)
    >>> out << "hello"
    Traceback (most recent call last):
    File "<pyshell#11>", line 1, in <module>
	out << "hello"
    ValueError: string of length 1 expected

What am I missing here?

-- 
Mark Summerfield, Qtrac Ltd, www.qtrac.eu
    C++, Python, Qt, PyQt - training and consultancy
        "Programming in Python 3 (Second Edition)" - ISBN 0321680561