ENH: organize - show files with conflicts requiring adding _obj-

dandi/organize.py

@@ -307,9 +307,26 @@
     # Avoid heavy import by importing within function:
     from .pynwb_utils import get_object_id
 
-    msg = "%d out of %d paths are not unique" % (len(non_unique), len(metadata))
+    msg = f"{len(non_unique)} out of {len(metadata)} paths are not unique."
+    non_unique_paths = sorted(non_unique)
+
+    # provide more information to the user
+    def get_msg(path):
+        in_paths = non_unique[path]
+        return f"{len(in_paths)} paths 'compete' for the path {path!r}:" + "\n  ".join(
+            [""] + in_paths
+        )
 
-    lgr.info(msg + ". We will try adding _obj- based on crc32 of object_id")
+    msg += "\n " + get_msg(non_unique_paths[0])
+    if len(non_unique) > 1:
+        msg += f"\n {len(non_unique) - 1} more case(s) are listed at DEBUG level."
+    lgr.info("%s", msg)
+    if len(non_unique) > 1:
+        msg = "Additional non-unique paths:"
+        for ex_path in non_unique_paths[1:]:
+            msg += "\n " + get_msg(ex_path)
+        lgr.debug("%s", msg)
+    lgr.info("We will try adding _obj- based on crc32 of object_id")
     seen_obj_ids = {}  # obj_id: object_id
     seen_object_ids = {}  # object_id: path
     recent_nwb_msg = "NWB>=2.1.0 standard (supported by pynwb>=1.1.0)."