# HG changeset patch
# User Jeff Hammel <k0scist@gmail.com>
# Date 1425160300 28800
# Node ID 7dd1b18c9f7854a3e06893c6c94696d424362d80
# Parent  3f04d7ae4d69cc55641e06c257aa478aa2de01d0
minor cleanup and better error

diff -r 3f04d7ae4d69 -r 7dd1b18c9f78 numerics/interpolation.py
--- a/numerics/interpolation.py	Fri Feb 27 13:34:05 2015 -0800
+++ b/numerics/interpolation.py	Sat Feb 28 13:51:40 2015 -0800
@@ -1,10 +1,10 @@
 #!/usr/bin/env python
 
-
 """
 interpolation
 """
 
+# imports
 import argparse
 import sys
 
@@ -58,8 +58,9 @@
     nearest_neighbors = neighbors(points, x)
 
     # we don't support endpoints yet; this is interpolation, not extrapolation
-    assert not any([(neighbor[0] is None or neighbor[1] is None)
-                    for neighbor in nearest_neighbors])
+    if any([(neighbor[0] is None or neighbor[1] is None)
+            for neighbor in nearest_neighbors]):
+        raise AssertionError("Bad neighbors: {}".format(nearest_neighbors))
 
     retval = []
     for index, (left, right) in enumerate(nearest_neighbors):
diff -r 3f04d7ae4d69 -r 7dd1b18c9f78 setup.py
--- a/setup.py	Fri Feb 27 13:34:05 2015 -0800
+++ b/setup.py	Sat Feb 28 13:51:40 2015 -0800
@@ -27,7 +27,7 @@
     types = numerics.convert:main
 """
 # TODO:
-#   cleanse = numerics.clean:main
+#   cleanse = numerics.clean:main  # cleans up outliers
 #   fold = numerics.fold:main
     kw['install_requires'] = dependencies
 except ImportError:
diff -r 3f04d7ae4d69 -r 7dd1b18c9f78 tests/test_interpolation.py
--- a/tests/test_interpolation.py	Fri Feb 27 13:34:05 2015 -0800
+++ b/tests/test_interpolation.py	Sat Feb 28 13:51:40 2015 -0800
@@ -37,6 +37,7 @@
         return retval
 
     def test_from_csv(self):
+        """test interpolation from a CSV file"""
 
         raw_data = self.read_test_data()
         data = [[(row[0], row[col]) for row in raw_data]