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Merged
merged 2 commits into from
Sep 15, 2025
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Merged

BUG: fix to #62205 #62320

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b4337e2
fix to #62205
PluvioXO Sep 11, 2025
e733b8a
reduced length of characters on a line for pre-checks.
PluvioXO Sep 11, 2025
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fix to #62205
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@PluvioXO
PluvioXO committed Sep 11, 2025
commit b4337e26ab80b57768c71e6bbb13feb32946de44
5 changes: 4 additions & 1 deletion pandas/io/json/_normalize.py
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Expand Up @@ -524,7 +524,10 @@ def _pull_records(js: dict[str, Any], spec: list | str) -> list:
# TODO: handle record value which are lists, at least error
# reasonably
data = nested_to_record(data, sep=sep, max_level=max_level)
return DataFrame(data, index=index)
result = DataFrame(data, index=index)
if record_prefix is not None:
result = result.rename(columns=lambda x: f"{record_prefix}{x}")
return result
elif not isinstance(record_path, list):
record_path = [record_path]

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9 changes: 9 additions & 0 deletions pandas/tests/io/json/test_normalize.py
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Expand Up @@ -380,6 +380,15 @@ def test_record_prefix(self, state_data):

tm.assert_frame_equal(result, expected)

def test_record_prefix_no_record_path_series(self):
# Ensure record_prefix is applied when record_path is None for Series input
s = Series([{"k": f"{i}", "m": "q"} for i in range(3)])
result = json_normalize(s, record_prefix="T.")
expected = DataFrame(
[{"T.k": "0", "T.m": "q"}, {"T.k": "1", "T.m": "q"}, {"T.k": "2", "T.m": "q"}]
)
tm.assert_frame_equal(result, expected)

def test_non_ascii_key(self):
testjson = (
b'[{"\xc3\x9cnic\xc3\xb8de":0,"sub":{"A":1, "B":2}},'
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