如何在fastapi中计算总小时数？

pip install fastapi

from fastapi import FastAPI
from pydantic import BaseModel

class TimeRequest(BaseModel):
    start_time: str
    end_time: str

app = FastAPI()

@app.post("/calculate")
def calculate_total_hours(request: TimeRequest):
    # 在这里进行计算总小时数的逻辑
    start_time = request.start_time
    end_time = request.end_time
    
    # 进行时间计算，这里假设时间格式为HH:MM
    start_hour, start_minute = map(int, start_time.split(":"))
    end_hour, end_minute = map(int, end_time.split(":"))
    
    total_hours = end_hour - start_hour
    total_minutes = end_minute - start_minute
    
    if total_minutes < 0:
        total_hours -= 1
        total_minutes += 60
    
    return {"total_hours": total_hours, "total_minutes": total_minutes}

if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=8000)

curl -X POST -H "Content-Type: application/json" -d '{"start_time": "09:30", "end_time": "17:45"}' http://localhost:8000/calculate