Why do I keep getting 415 WatsonException: Error: unsupported media type in Python?

Question

I am trying to use Watson api for sentiment analysis. The code is quite simple. But why do I keep getting this error?????

WatsonException: Error: unsupported media type, Code: 415

Nothing about this error in API document.

from watson_developer_cloud import AlchemyLanguageV1
alchemy_language = AlchemyLanguageV1(url="https://gateway.watsonplatform.net/natural-language-understanding/api",
          username="xxx",
          password="xxx")
print(json.dumps(alchemy_language.sentiment(text="hehe")))

Answer 1

Please look carefully on the sample code. First of all, it constructs an AlchemyLanguageV1 object using an API key, not login and password, maybe that is the cause?

Answer 2

我认为问题在于使用Alchemy语言()结束请求并添加,，之后添加indent参数。

我认为这个参数是必需的，因为没有在请求中设置数据类型（示例application/json等）...

文档中的所有请求都有参数indent=2。

我不确定，可能在IBM工作的人会证实。

检查此示例：

import json
from watson_developer_cloud import AlchemyLanguageV1

alchemy_language = AlchemyLanguageV1(api_key='API_KEY')
print(json.dumps(
  alchemy_language.sentiment(
    text='hehe'),
  indent=2))

我通过文档链接测试得出了这个结论：here

Answer 3

那是因为不再支持AlchemyLanguageV1。 IBM已将此组件集成到Watson Natural Language Understanding中。请参阅沃森自然语言理解的文档。