fix test for travis

Author: nschloe

test/test_basic_sin.py

@@ -2,11 +2,12 @@
 #
 from helpers import assert_phash
 
+from matplotlib import pyplot as plt
+from matplotlib import style
+import numpy as np
+
 
 def plot():
-    from matplotlib import pyplot as plt
-    from matplotlib import style
-    import numpy as np
     fig = plt.figure()
     with plt.style.context(('ggplot')):
         t = np.arange(0.0, 2.0, 0.1)
@@ -24,4 +25,4 @@ def plot():
 
 
 def test():
-    assert_phash(plot(), '1f36e5ce21c1e5c1')
+    assert_phash(plot(), '1f36e5c621c1e7c1')