MNT: hide sip imports further

tacaswell · tacaswell · commit 64a34ab2d32b · 2018-07-24T20:46:00.000-04:00
diff --git a/lib/matplotlib/backends/qt_compat.py b/lib/matplotlib/backends/qt_compat.py
@@ -88,11 +88,12 @@ def _setup_pyqt4_internal(api):
         # http://pyqt.sourceforge.net/Docs/PyQt4/incompatible_apis.html
         _sip_apis = ["QDate", "QDateTime", "QString", "QTextStream", "QTime",
                      "QUrl", "QVariant"]
-        import sip
+
         for _sip_api in _sip_apis:
             try:
+                import sip
                 sip.setapi(_sip_api, api)
-            except ValueError:
+            except (ValueError, ImportError):
                 pass
         from PyQt4 import QtCore, QtGui
         __version__ = QtCore.PYQT_VERSION_STR
