From 9f00221f85f000388b404b16d88d7192f710b305 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Al=C3=A1n=20Mu=C3=B1oz?= <alan.munoz@ed.ac.uk>
Date: Fri, 6 Jan 2023 18:46:19 +0000
Subject: [PATCH] fix(meta): cover empty case for flatten_dict
---
src/agora/io/metadata.py | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/src/agora/io/metadata.py b/src/agora/io/metadata.py
index 8842bc96..7fde2b10 100644
--- a/src/agora/io/metadata.py
+++ b/src/agora/io/metadata.py
@@ -65,11 +65,13 @@ class MetaData:
# Needed because HDF5 attributes do not support dictionaries
def flatten_dict(nested_dict, separator="/"):
"""
- Flattens nested dictionary
+ Flattens nested dictionary. If empty return as-is.
"""
- df = pd.json_normalize(nested_dict, sep=separator)
+ flattened = {}
+ if nested_dict:
+ df = pd.json_normalize(nested_dict, sep=separator)
+ flattened = df.to_dict(orient="records")[0] or {}
- flattened = df.to_dict(orient="records")[0] or {}
return flattened
--
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