BUG: fix bug with replace when a compiled regex was passed but regex=False

Author: cpcloud

pandas/core/internals.py

@@ -746,7 +746,7 @@ def replace(self, to_replace, value, inplace=False, filter=None,
         both_lists = to_rep_is_list and value_is_list
         either_list = to_rep_is_list or value_is_list
 
-        if not either_list and com.is_re_compilable(to_replace):
+        if not either_list and com.is_re(to_replace):
             blk[0], = blk[0]._replace_single(to_replace, value,
                                              inplace=inplace, filter=filter,
                                              regex=True)

pandas/tests/test_frame.py

@@ -6778,7 +6778,6 @@ def test_replace_list(self):
 
         ## lists of regexes and values
         # list of [v1, v2, ..., vN] -> [v1, v2, ..., vN]
-        import ipdb; ipdb.set_trace()
         to_replace_res = [r'.', r'e']
         values = [nan, 'crap']
         res = dfobj.replace(to_replace_res, values)