Delete main.py
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main.py
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from fastapi import FastAPI
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from pydantic import BaseModel
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import pickle
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import pandas as pd
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import numpy as np
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import uvicorn
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import os
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from sklearn.preprocessing import StandardScaler
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import joblib
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""" Creating the FastAPI Instance. i.e. foundation for our API,
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which will be the main part of our project"""
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app = FastAPI(title="API")
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"""We load a machine learning model and a scaler that help us make predictions based on data."""
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model = joblib.load(r'C:\Users\viole\OneDrive\Documents\sepsis P6\ml\gbc.pkl', mmap_mode='r')
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scaler = joblib.load(r'C:\Users\viole\OneDrive\Documents\sepsis P6\ml\scaler.pkl', mmap_mode='r')
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"""We define a function that will make predictions using our model and scaler."""
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def predict(df, endpoint='simple'):
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# Scaling
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scaled_df = scaler.transform(df)
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# Prediction
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prediction = model.predict_proba(scaled_df)
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highest_proba = prediction.max(axis=1)
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predicted_labels = ["Patient does not have sepsis" if i == 0 else "Patient has Sepsis" for i in highest_proba]
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response = []
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for label, proba in zip(predicted_labels, highest_proba):
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output = {
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"prediction": label,
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"probability of prediction": str(round(proba * 100)) + '%'
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}
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response.append(output)
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return response
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"""We create models for the data that our API will work with.
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We define what kind of information the data will have.
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It's like deciding what information we need to collect and how it should be organized."""
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"""These classes define the data models used for API endpoints.
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The 'Patient' class represents a single patient's data,
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and the 'Patients' class represents a list of patients' data.
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The Patients class also includes a class method return_list_of_dict()
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that converts the Patients object into a list of dictionaries"""
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class Patient(BaseModel):
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Blood_Work_R1: float
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Blood_Pressure: float
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Blood_Work_R3: float
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BMI: float
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Blood_Work_R4: float
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Patient_age: int
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"""Next block of code defines different parts of our API and how it responds to different requests.
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It sets up a main page with a specific message, provides a checkup endpoint to receive
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optional parameters, and sets up prediction endpoints to receive medical data for making predictions,
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either for a single patient or multiple patients."""
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@app.get("/")
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def root():
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return {"API": "This is an API for sepsis prediction."}
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# Prediction endpoint (Where we will input our features)
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@app.post("/predict")
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def predict_sepsis(patient: Patient):
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# Make prediction
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data = pd.DataFrame(patient.dict(), index=[0])
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scaled_data = scaler.transform(data)
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parsed = predict(df=scaled_data)
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return {"output": parsed}
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if __name__ == "__main__":
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os.environ["DEBUG"] = "True" # Enable debug mode
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uvicorn.run("main:app", reload=True)
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