bing spell check api not work in mode 'proof'

Question

example_text = "I is a techer" 
endpoint = "https://api.bing.microsoft.com/v7.0/SpellCheck"

data = {'text': example_text}

params = {
    'mode':'proof',
    'text': example_text,
    'mkt': 'en-US',
    }

headers = {
    'Ocp-Apim-Subscription-Key': '<my key>',
    'BingAPIs-Market':'en-US',
    'Pragma': 'no-cache'
    }
response = requests.post(endpoint, headers=headers, params=params)

The result returned shows no errors. is should be am , techer should be teacher

Answer 1

@占帅 邵 Do you mean there is no response for above call i.e suggestions?

I have run the same snippet and the following suggestions are shown:

response.json()  
{'_type': 'SpellCheck', 'flaggedTokens': [{'offset': 0, 'token': 'I', 'type': 'UnknownToken', 'suggestions': [{'suggestion': 'IT', 'score': 0.853576744443262}]}, {'offset': 7, 'token': 'techer', 'type': 'UnknownToken', 'suggestions': [{'suggestion': 'teacher', 'score': 0.853576744443262}]}]}