Question

我第一次使用flask部署模型。我遵循的教程来自：https://www.geeksforgeeks.org/deploy-machine-learning-model-using-flask/ 我也无法理解script.py如何调用index.html 这是我的script.py文件：

from flask import Flask
app = Flask(__name__)
@app.route('/')
def index():
   return render_template("index.html")
def ValuePredictor(to_predict_list): 
    to_predict = np.array(to_predict_list).reshape(1, 8) 
    loaded_model = pickle.load(open("model.pkl", "rb")) 
    result = loaded_model.predict(to_predict) 
    return result[0] 
  
@app.route('/', methods = ['POST']) 
def result(): 
    if request.method == 'POST': 
        to_predict_list = request.form.to_dict() 
        to_predict_list = list(to_predict_list.values()) 
        to_predict_list = list(map(int, to_predict_list)) 
        result = ValuePredictor(to_predict_list)         
        if int(result)== 1: 
            prediction ='Chance of diabetes'
        else: 
            prediction ='You are safe'            
        return render_template("result.html", prediction = prediction)

这是index.html文件：

<html> 
<body> 
    <h3>Diabetes Prediction</h3> 
  
<div> 
  <form action="/result" method="POST"> 
    <label for="age">Age</label> 
    <input type="text" id="age" name="age"> 
    <br> 
    <label for="preg">Number of times pregnant </label>
    <input type="text" id="preg" name="preg"> 
    <br> 
    <label for="p_glu">Plasma glucose concentration a 2 hours in an oral glucose tolerance test </label> 
    <input type="text" id="p_glu" name="p_glu"> 
    <br> 
    <label for="bp">Diastolic blood pressure (mm Hg) </label> 
    <input type="text" id="bp" name="bp"> 
    <br> 
    <label for="thickness">Triceps skin fold thickness (mm)</label> 
    <input type="text" id="thickness" name="thickness"> 
    <br> 
    <label for="insulin">2-Hour serum insulin (mu U/ml)</label> 
    <input type="text" id="insulin" name="insulin"> 
    <br>
    <label for="bmi">Body mass index (weight in kg/(height in m)^2)</label> 
    <input type="text" id="bmi" name="bmi"> 
    <br> 
    <label for="diab">Diabetes pedigree function</label> 
    <input type="text" id="diab" name="diab"> 
    <br> 
    <input type="submit" value="Submit"> 
  </form> 
</div> 
</body> 
</html>

result.html文件为：

<!doctype html> 
<html> 
   <body> 
       <h1> {{ prediction }}</h1> 
   </body> 
</html>

Answer 1

您正在尝试使用未导入的功能。

您需要在python脚本的开头添加：

从烧瓶导入请求，render_template

使用烧瓶时500内部服务器错误

1 个答案: