fix numpy pytest errors. don't put pylab in default namespace

pizzathief · pizzathief · commit db5f5e5295e3 · 2016-01-22T18:53:10.000+11:00
This might not be the point of using pylab this way in a test
however
diff --git a/lib/matplotlib/tests/test_simplification.py b/lib/matplotlib/tests/test_simplification.py
@@ -9,7 +9,7 @@
 import matplotlib.pyplot as plt
 import pytest
 
-from pylab import *
+import pylab
 import numpy as np
 from matplotlib import patches, path, transforms
 
