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Fix: Update return type of read_folder #10

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Fix: Update return type of read_folder #10

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677e7a2
Fix return type of read_folder function
ASR134 Jan 12, 2026
2df3421
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ASR134 Jan 12, 2026
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5 changes: 3 additions & 2 deletions dskit/io.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,8 @@ def load(filepath):

def read_folder(folder_path, file_type='csv'):
"""
Loads multiple files from a folder and concatenates them.
Load multiple files from a folder and return
a list of pandas DataFrames.
"""
if not os.path.exists(folder_path):
raise FileNotFoundError(f"The folder '{folder_path}' was not found.")
Expand All @@ -47,7 +48,7 @@ def read_folder(folder_path, file_type='csv'):
df_list.append(df)

if df_list:
return pd.concat(df_list, ignore_index=True)
return df_list
else:
return None

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