Python-сообщество

 Python 3.4.3 (default, Mar 26 2015, 22:03:40) 
[GCC 4.9.2] on linux
>>> from PyQt4.QtCore import QStringList
Traceback (most recent call last):
  File "/usr/lib/python3.4/code.py", line 90, in runcode
    exec(code, self.locals)
  File "<input>", line 1, in <module>

 /usr/bin/python3.4 /home/Vik/Projects/test_my/ex_3.py
Traceback (most recent call last):
  File "/home/Vik/Projects/test_my/ex_3.py", line 35, in <module>
    test = QStringList()
NameError: name 'QStringList' is not defined
Process finished with exit code 1

 pydoc -p 8000

 sudo apt-get install python-pip3
pip3 install PyQt4

 pydoc3 -p 8000

 >>> from PyQt4.Qt import *
>>> l = QStringList()
>>> l
<PyQt4.QtCore.QStringList object at 0x10a2bea28>
>>> 

 sudo apt-get install python3-PyQt4

 Selecting Incompatible APIs
PyQt4 provides limited support for multiple incompatible APIs and the ability for an application to select between them at run-time. For example, an application can choose whether QString is implemented as a Python type, or is automatically converted to and from a Python v2 unicode object or a Python v3 string object.
This ability allows developers to decide how to manage the transition from an older deprecated, API to a newer incompatible API.
Each API that can be selected in this way has a name and a range of version numbers. An application calls sip.setapi() to set the version number of a particular API. This call must be made before any module that implements the API is imported. Once set the version number cannot be changed. If not set then an API will use its default version.
For example the following code will disable the use of QString:

 import sip
sip.setapi('QString', 2)
from PyQt4 import QtCore
# This will raise an attribute exception because QString is only wrapped
# in version 1 of the API.
s = QtCore.QString()

 The following APIs are currently implemented:
    QDate v1, v2
    QDateTime v1, v2
    QString v1, v2
    QTextStream v1, v2
    QTime v1, v2
    QUrl v1, v2
    QVariant v1, v2

 import sip
test = sip.getapi('QString')
print(test)