Look into whether the following proxy setting is the general solution for accessing openai api via proxy

[EthanC111]

As in #8 and #3, we need to look into whether

proxies = {'http': "http://127.0.0.1:7890",
          'https': "http://127.0.0.1:7890"}
openai.proxy = proxies

is the general solution for calling openai using proxy.