From fbc01290d5724427ccb147e0c4a7b269cd3bdb38 Mon Sep 17 00:00:00 2001
From: Marcel <marcel.paffrath@rub.de>
Date: Tue, 17 Jul 2018 10:06:03 +0200
Subject: [PATCH] [update] make PYQTGRAPH mandatory for PyLoT (stop maintaining
 unused stuff)!

---
 PyLoT.py                   | 6 +-----
 pylot/core/util/utils.py   | 7 +------
 pylot/core/util/widgets.py | 9 ++-------
 3 files changed, 4 insertions(+), 18 deletions(-)

diff --git a/PyLoT.py b/PyLoT.py
index fca18830..e38e5fb0 100755
--- a/PyLoT.py
+++ b/PyLoT.py
@@ -48,11 +48,7 @@ from obspy.core.util import AttribDict
 
 from pylot.core.util.obspyDMT_interface import check_obspydmt_structure
 
-try:
-    import pyqtgraph as pg
-except Exception as e:
-    print('PyLoT: Could not import pyqtgraph. {}'.format(e))
-    pg = None
+import pyqtgraph as pg
 
 try:
     from matplotlib.backends.backend_qt4agg import FigureCanvas
diff --git a/pylot/core/util/utils.py b/pylot/core/util/utils.py
index fecd15c8..73b732da 100644
--- a/pylot/core/util/utils.py
+++ b/pylot/core/util/utils.py
@@ -22,12 +22,7 @@ from pylot.styles import style_settings
 from scipy.interpolate import splrep, splev
 from PySide import QtCore, QtGui
 
-try:
-    import pyqtgraph as pg
-except Exception as e:
-    print('PyLoT: Could not import pyqtgraph. {}'.format(e))
-    pg = None
-
+import pyqtgraph as pg
 
 def _pickle_method(m):
     if m.im_self is None:
diff --git a/pylot/core/util/widgets.py b/pylot/core/util/widgets.py
index e9bc5e4b..17c184aa 100644
--- a/pylot/core/util/widgets.py
+++ b/pylot/core/util/widgets.py
@@ -4404,7 +4404,7 @@ class GraphicsTab(PropTab):
         super(GraphicsTab, self).__init__(parent)
         self.pylot_mainwindow = parent._pylot_mainwindow
         self.init_layout()
-        self.add_pg_cb()
+        #self.add_pg_cb()
         self.add_nth_sample()
         self.add_style_settings()
         self.setLayout(self.main_layout)
@@ -4441,12 +4441,7 @@ class GraphicsTab(PropTab):
         self.main_layout.addWidget(self.spinbox_nth_sample, 1, 1)
 
     def add_pg_cb(self):
-        try:
-            import pyqtgraph as pg
-            pg = True
-        except:
-            pg = False
-
+        pg = True
         text = {True: 'Use pyqtgraphic library for plotting',
                 False: 'Cannot use library: pyqtgraphic not found on system'}
         label = QLabel('PyQt graphic')