我以为我那里缺少5个必需的职位要求？有什么想法吗？

问题描述

import streamlit as st
import pickle

st.title('My first app')

model = open('model2.pkl','rb')
car_nb = pickle.load(model)  

def predict_price(name,year,nr_of_accidents,color_exterior,color_interior,car_mileage):
    
    prediction=car_nb.predict([['name','year','nr_of_accidents','color_exterior','color_interior','car_mileage']])
    print(prediction)
    return prediction

def main():
    
    st.title("Used Car Prices!!") 

    st.write('''
             # 
             ''')

    name = st.text_input("Car","Type Here")
    year = st.text_input("Year","Type Here")
    nr_of_accidents = st.text_input("Accidents","Type Here")
    color_exterior = st.text_input("Exterior Color","Type Here")
    color_interior = st.text_input('Interior Color','Type Here')
    car_mileage = st.text_input('Miles','Type Here')
    result=""
    
    if st.button("Predict"):
        result=predict_price(([['name','car_mileage']]))
    st.success('The price is {}'.format(result))

if __name__ =='__main__':
    main()

TypeError：predict_price（）缺少5个必需的位置参数：“ year”，“ nr_of_accidents”，“ color_exterior”，“ color_interior”和“ car_mileage”

解决方法

您显然在代码结尾处从调用predict_price()的行复制粘贴了np.predict()的调用。这将无法正常工作，因为错误消息指出predict_price()期望有6个参数，而您只是传递了一个（嵌套列表）。您（很可能）应该更换：

result=predict_price(([['name','year','nr_of_accidents','color_exterior','color_interior','car_mileage']]))

使用

result = predict_price(name,year,nr_of_accidents,color_exterior,color_interior,car_mileage)