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server fix: convert types before json dump #14

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server fix: convert types before json dump #14

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11 changes: 10 additions & 1 deletion py3langid/langid.py
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Original file line number Diff line number Diff line change
Expand Up @@ -284,6 +284,15 @@ def rank_path(self, path):
return path, retval


class NumpyEncoder(json.JSONEncoder):
""" Custom encoder for numpy data types """
def default(self, obj):
if isinstance(obj, np.float32):
return float(obj) # Convert float32 to native float
if isinstance(obj, np.ndarray):
return obj.tolist() # Convert arrays to list
return json.JSONEncoder.default(self, obj)

def application(environ, start_response):
"""
WSGI-compatible langid web service.
Expand Down Expand Up @@ -349,7 +358,7 @@ def application(environ, start_response):

headers = [('Content-type', 'text/javascript; charset=utf-8')] # HTTP Headers
start_response(status, headers)
return [json.dumps(response)]
return [json.dumps(response, cls=NumpyEncoder).encode('utf-8')]


def main():
Expand Down
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