• ①「あなたは～～です」という形式で記述する
• ②命令書として記載する

#命令書
あなたは○○のプロです。
以下の#制約条件に従って△△を行ってください。
#制約条件
・～～～～
・～～～～
・～～～～
…

import openai
import json

openai.api_key = "Your API Key"

response = openai.ChatCompletion.create(
  model="gpt-3.5-turbo",
  messages=[
        {"role": "user", "content": "ChatGPTのapiにおけるuser, assistant, systemなどのroleについて解説して"},
    ],
  temperature=0.7
)


# JSONデータをPythonの辞書に変換します。
data = json.loads(str(response))

# 'choices'リストから最初のメッセージを取得します。
message = data['choices'][0]['message']['content']

print(message)

ChatGPTのAPIには、以下のような役割（role）があります。

1. User（ユーザー）
ユーザーは、APIを利用して会話を開始する人のことです。ユーザーは、システムからの応答を受け取り、その応答に基づいて返信をすることができます。

2. Assistant（アシスタント）
アシスタントは、APIを利用して自然言語での会話を行うための人工知能（AI）です。アシスタントは、ユーザーから送信されたメッセージを解釈し、適切な返信を生成することができます。

3. System（システム）
システムは、チャットボットに必要なバックエンドシステムのことです。システムは、アシスタントが利用するデータベースやAPI、またはその他のサードパーティのシステムと連携し、必要な情報を収集してアシスタントに提供する役割を持ちます。

これらの役割は、APIの構造化された会話フローを実現するために必要です。ユーザーがメッセージを送信すると、アシスタントがそれを解釈し、システムから必要な情報を受け取って適切な返信を生成することができます。このように、APIはより効果的な会話の実現を可能にします。

model="gpt-3.5-turbo"

messages=[
        {"role": "user", "content": "ChatGPTのapiにおけるuser, assistant, systemなどのroleについて解説して"},
    ]

1. role・・・「system」「user」のいずれか。
2. content・・・チャットの中身

messages=[{"role": "system", "content": "語尾は「でちゅ」"}, {"role": "user", "content": "こんにちは！"}],

こんにちはでちゅ！お元気でしょうか？

temperature=0.7

import requests
import json

api_url = "https://api.openai.com/v1/chat/completions"
headers = {
    "Content-Type": "application/json",
    "Authorization": "Bearer YOUR_OPENAI_API_KEY"
}
data = {
    "model": "gpt-3.5-turbo",
    "messages": [{"role": "user", "content": "Hello, who are you?"}]
}

response = requests.post(api_url, headers=headers, data=json.dumps(data))

print(response.json())

import openai

openai.api_key = "YOUR_API_KEY"

response = openai.ChatCompletion.create(
  model = "gpt-3.5-turbo",
  temperature = 0.2,
  max_tokens = 1000,
  messages = [
    {"role": "user", "content": "Hello！"}
  ]
)

print(response['choices'][0]['message']['content'])

curl https://api.openai.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -d '{
     "model": "gpt-3.5-turbo",
     "messages": [{"role": "user", "content": "Say this is a test!"}],
     "temperature": 0.7
   }'

{
    "id": "chatcmpl-abc123",
    "object": "chat.completion",
    "created": 1677858242,
    "model": "gpt-3.5-turbo-0613",
    "usage": {
        "prompt_tokens": 13,
        "completion_tokens": 7,
        "total_tokens": 20
    },
    "choices": [
        {
            "message": {
                "role": "assistant",
                "content": "\n\nThis is a test!"
            },
            "finish_reason": "stop",
            "index": 0
        }
    ]
}

{
  "id": "chatcmpl-123",
  "object": "chat.completion",
  "created": 1677652288,
  "model": "gpt-3.5-turbo-0613",
  "choices": [{
    "index": 0,
    "message": {
      "role": "assistant",
      "content": "\n\nHello there, how may I assist you today?",
    },
    "finish_reason": "stop"
  }],
  "usage": {
    "prompt_tokens": 9,
    "completion_tokens": 12,
    "total_tokens": 21
  }
}

{
  "id":"chatcmpl-123",
  "object":"chat.completion.chunk",
  "created":1694268190,
  "model":"gpt-3.5-turbo-0613",
  "choices":[{
    "index":0,
    "delta":{
      "role":"assistant",
      "content":""
    },
    "finish_reason":null
  }]
}

{
  "id":"chatcmpl-123",
  "object":"chat.completion.chunk",
  "created":1694268190,
  "model":"gpt-3.5-turbo-0613",
  "choices":[{
    "index":0,
    "delta":{
      "content":"Hello"
    },
    "finish_reason":null
  }]
}

{
  "id":"chatcmpl-123",
  "object":"chat.completion.chunk",
  "created":1694268190,
  "model":"gpt-3.5-turbo-0613",
  "choices":[{
    "index":0,
    "delta":{
      "content":"!"
    },
    "finish_reason":null
  }]
}

....


{
  "id":"chatcmpl-123",
  "object":"chat.completion.chunk",
  "created":1694268190,
  "model":"gpt-3.5-turbo-0613",
  "choices":[{
    "index":0,
    "delta":{
      "content":" today"
    },
    "finish_reason":null
  }]
}

{
  "id":"chatcmpl-123",
  "object":"chat.completion.chunk",
  "created":1694268190,
  "model":"gpt-3.5-turbo-0613",
  "choices":[{
    "index":0,
    "delta":{
      "content":"?"
    },
    "finish_reason":null
  }]
}

{
  "id":"chatcmpl-123",
  "object":"chat.completion.chunk",
  "created":1694268190,
  "model":"gpt-3.5-turbo-0613",
  "choices":[{
    "index":0,
    "delta":{},
    "finish_reason":"stop"
  }]
}

POST https://api.openai.com/v1/chat/completions

curl https://api.openai.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -d '{
    "model": "gpt-3.5-turbo",
    "messages": [
      {
        "role": "system",
        "content": "You are a helpful assistant."
      },
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }'

{
  "id": "chatcmpl-123",
  "object": "chat.completion",
  "created": 1677652288,
  "model": "gpt-3.5-turbo-0613",
  "choices": [{
    "index": 0,
    "message": {
      "role": "assistant",
      "content": "\n\nHello there, how may I assist you today?",
    },
    "finish_reason": "stop"
  }],
  "usage": {
    "prompt_tokens": 9,
    "completion_tokens": 12,
    "total_tokens": 21
  }
}

curl https://api.openai.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -d '{
    "model": "gpt-3.5-turbo",
    "messages": [
      {
        "role": "system",
        "content": "You are a helpful assistant."
      },
      {
        "role": "user",
        "content": "Hello!"
      }
    ],
    "stream": true
  }'

{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-3.5-turbo-0613","choices":[{"index":0,"delta":{"role":"assistant","content":""},"finish_reason":null}]}

{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-3.5-turbo-0613","choices":[{"index":0,"delta":{"content":"Hello"},"finish_reason":null}]}

{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-3.5-turbo-0613","choices":[{"index":0,"delta":{"content":"!"},"finish_reason":null}]}

....

{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-3.5-turbo-0613","choices":[{"index":0,"delta":{"content":" today"},"finish_reason":null}]}

{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-3.5-turbo-0613","choices":[{"index":0,"delta":{"content":"?"},"finish_reason":null}]}

{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-3.5-turbo-0613","choices":[{"index":0,"delta":{},"finish_reason":"stop"}]}

curl https://api.openai.com/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $OPENAI_API_KEY" \
-d '{
  "model": "gpt-3.5-turbo",
  "messages": [
    {
      "role": "user",
      "content": "What is the weather like in Boston?"
    }
  ],
  "functions": [
    {
      "name": "get_current_weather",
      "description": "Get the current weather in a given location",
      "parameters": {
        "type": "object",
        "properties": {
          "location": {
            "type": "string",
            "description": "The city and state, e.g. San Francisco, CA"
          },
          "unit": {
            "type": "string",
            "enum": ["celsius", "fahrenheit"]
          }
        },
        "required": ["location"]
      }
    }
  ],
  "function_call": "auto"
}'

{
  "choices": [
    {
      "finish_reason": "function_call",
      "index": 0,
      "message": {
        "content": null,
        "function_call": {
          "arguments": "{\n  \"location\": \"Boston, MA\"\n}",
          "name": "get_current_weather"
        },
        "role": "assistant"
      }
    }
  ],
  "created": 1694028367,
  "model": "gpt-3.5-turbo-0613",
  "object": "chat.completion",
  "usage": {
    "completion_tokens": 18,
    "prompt_tokens": 82,
    "total_tokens": 100
  }
}