QPainter.drawLines() has many overloads, and is supposed to take lists of
QPoint, QPointF, QLine, and QLineF. It only seems to work for lists of QLine.

Note that Bug 287 fixed these to be overloads. Formerly they were separately
named functions (QPainter.drawLinesFromPoints, etc.). I have not tested all the
changes due to bug 287 being fixed, but there may be other cases besides
QPainter.drawLines() that should be checked.

Test case:
----------------------------------
# all work in PyQt4
#from PyQt4.QtCore import *
#from PyQt4.QtGui import *
from PySide.QtCore import *
from PySide.QtGui import *

app = QApplication([])
pixmap = QPixmap(2,2)
painter = QPainter(pixmap)
painter.drawLines([QLine(QPoint(0,0), QPoint(1,1))])    # works
painter.drawLines([QPoint(0,0), QPoint(1,1)])           # fails
painter.drawLines([QPointF(0,0), QPointF(1,1)])         # fails
painter.drawLines([QLineF(QPointF(0,0), QPointF(1,1))]) # fails
painter.end()
-----------------------------------

Traceback (most recent call last):
  File "super.py", line 11, in <module>
    painter.drawLines([QPoint(0,0), QPoint(1,1)])           # fails
TypeError: 'PySide.QtGui.QPainter.drawLines' called with wrong argument types:
  PySide.QtGui.QPainter.drawLines(list)
Supported signatures:
  PySide.QtGui.QPainter.drawLines(list)
  PySide.QtGui.QPainter.drawLines(list)
  PySide.QtGui.QPainter.drawLines(list)
  PySide.QtGui.QPainter.drawLines(list)