pypy / pypy / tool / algo / sparsemat.py

Diff from to

pypy/tool/algo/sparsemat.py

                             if abs(value) > EPSILON:
                                 line2[col] = columns[col][i] = value
                             else:
-                                if col in line2:
-                                    del line2[col]
-                                del columns[col][i]
+                                line2.pop(col, 0)
+                                columns[col].pop(i, 0)
         solution = [None] * len(vector)
         for i in range(len(vector)-1, -1, -1):
             row = nrows[i]
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