fixed bad escape in string

Author: gdementen

larray/extra/ipfp.py

@@ -274,7 +274,7 @@ def has_anonymous_axes(a):
                 template = """iteration {}
  * max(abs(prev_cell - cell)): {}
  * max(abs(sum - target_sum)): {}
-   \- change since last iteration: {}
+   \\- change since last iteration: {}
 """
             print(template.format(i, f2str(stepcelldiff), f2str(max_sum_diff), f2str(step_sum_improvement)))