import re

def decode_response_headers(headers):

"""

Decodes response headers for hypothesis validation, handling edge cases.

Args:

headers (dict): A dictionary of response headers.

Returns:

dict: A dictionary of decoded headers. Returns an empty dictionary if input is invalid.

"""

if not isinstance(headers, dict):

return {}

decoded_headers = {}

for key, value in headers.items():

if not isinstance(key, str):

continue # Skip invalid keys

if value is None:

decoded_headers[key] = None

elif isinstance(value, str):

decoded_headers[key] = value.strip()

elif isinstance(value, list):

decoded_headers[key] = [str(item).strip() for item in value if item is not None]

elif isinstance(value, (int, float)):

decoded_headers[key] = value

else:

decoded_headers[key] = str(value) # Convert to string for consistency

return decoded_headers

if __name__ == '__main__':

# Example Usage & Edge Case Handling

headers1 = {"Content-Type": "text/html", "Cache-Control": "no-cache", "Authorization": "Bearer abc"}

decoded_headers1 = decode_response_headers(headers1)

print(f"Headers 1: {decoded_headers1}")

headers2 = {"Content-Type": None, "Cache-Control": "no-cache", "Authorization": None}

decoded_headers2 = decode_response_headers(headers2)

print(f"Headers 2: {decoded_headers2}")

headers3 = {"Content-Type": "text/html", "Cache-Control": "no-cache", "Authorization": [None, "Bearer abc"]}

decoded_headers3 = decode_response_headers(headers3)

print(f"Headers 3: {decoded_headers3}")

headers4 = {"Content-Type": "text/html", "Cache-Control": "no-cache", "Authorization": 123}

decoded_headers4 = decode_response_headers(headers4)

print(f"Headers 4: {decoded_headers4}")

headers5 = "not a dictionary"

decoded_headers5 = decode_response_headers(headers5)

print(f"Headers 5: {decoded_headers5}")

headers6 = {"Content-Type": 123, "Cache-Control": "no-cache", "Authorization": "Bearer abc"}

decoded_headers6 = decode_response_headers(headers6)

print(f"Headers 6: {decoded_headers6}")