Avoids exception when pandas.io.json.json_normalize contains items in meta parameter that don't always occur in every item of the list

Author: dickreuter

pandas/io/json.py

@@ -839,7 +839,10 @@ def _recursive_extract(data, path, seen_meta, level=0):
                     if level + 1 > len(val):
                         meta_val = seen_meta[key]
                     else:
-                        meta_val = _pull_field(obj, val[level:])
+                        try:
+                            meta_val = _pull_field(obj, val[level:])
+                        except:
+                            meta_val = np.nan
                     meta_vals[key].append(meta_val)
 
                 records.extend(recs)