我有一个模型，我想将其用于使用pickle加载的预测中，并且有一个使用django创建的表单。但是，当用户提交表单时，我希望它以csv格式存储在变量中，因此我可以对用户填写的每个表单执行Xgboost预测，然后输出预测。可能是它没有得到任何输入。新手
from django.db import models
from django import forms
from django.core.validators import MaxValueValidator, MinValueValidator
# Create your models here.
type_loan=(("Cash loan","Cash loan"),
("Revolving loan","Revolving Loan"))
Gender=(("Male","Male"),
("Female","Female"))
Yes_NO=(("YES","YES"),("NO","NO"))
status=(("Single","Single"),
("Married","Married"),
("Widow","Widow"),
("Seprated","Divorce"))
Highest_Education=(("Secondary","Secondary"),
("Incomplete Higher","Incomplete Higher"),
("Lower Secondary","Lower Secondary"),
("Academic Degree","Academic Degree"))
Income_type=(("Working","Working Class"),
("State Servant","Civil Servant"),
("Commercial Associate","Commercial Associate"),
("Pensioner","Pensioner"),
("Student","Student"),
("Businessman","Business Owner"))
class Applicant(models.Model):
name=models.CharField(default="Jon Samuel",max_length=50,null="True")
Birth_date=models.DateField(default="2018-03-12",blank=False, null=True)
Status=models.CharField(choices=status,max_length=50)
Children=models.IntegerField(default=0,validators=[MinValueValidator(0),MaxValueValidator(17)])
Highest_Education=models.CharField(choices=Highest_Education,max_length=50)
Gender=models.CharField(choices=Gender, max_length=50)
loan_type=models.CharField(choices=type_loan, max_length=50)
own_a_car=models.CharField(choices=Yes_NO,max_length=50)
own_a_house=models.CharField(choices=Yes_NO,max_length=50)
def __str__(self):
return self.name
views.py
from django.shortcuts import render
from .models import Applicant
from .forms import Applicant_form
from django.views.generic import ListView, CreateView, UpdateView
from django.core.cache import cache
import xgboost as xgb
import pickle
from sklearn.preprocessing import LabelEncoder
class CreateMyModelView(CreateView):
model = Applicant
form_class = Applicant_form
template_name = 'loan/index.html'
success_url = '/loan/results'
context_object_name = 'name'
class MyModelListView(ListView):
template_name = 'loan/result.html'
context_object_name = 'Results'
def get_queryset(self):
queryset=Applicant.objects.all()
with open('model/newloan_model','rb') as f:
clf=pickle.load(f)
le=LabelEncoder()
le.fit(queryset)
queryset=le.transform(queryset)
d_test = xgb.DMatrix(queryset)
predict=clf.predict(d_test)
return (predict)
回溯
File "/home/david/.local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
response = get_response(request)
File "/home/david/.local/lib/python3.6/site-packages/django/core/handlers/base.py", line 126, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/home/david/.local/lib/python3.6/site-packages/django/core/handlers/base.py", line 124, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/david/.local/lib/python3.6/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/home/david/.local/lib/python3.6/site-packages/django/views/generic/base.py", line 88, in dispatch
return handler(request, *args, **kwargs)
File "/home/david/.local/lib/python3.6/site-packages/django/views/generic/list.py", line 142, in get
self.object_list = self.get_queryset()
File "/home/david/loan60/loan/views.py", line 27, in get_queryset
data=le.fit_transform(queryset)
File "/home/david/.local/lib/python3.6/site-packages/sklearn/preprocessing/label.py", line 235, in fit_transform
y = column_or_1d(y, warn=True)
File "/home/david/.local/lib/python3.6/site-packages/sklearn/utils/validation.py", line 797, in column_or_1d
raise ValueError("bad input shape {0}".format(shape))
ValueError: bad input shape (3, 10)
[11/Dec/2018 18:46:28] "GET /loan/results HTTP/1.1" 500 92945
Not Found: /favicon.ico
[11/Dec/2018 18:46:28] "GET /favicon.ico HTTP/1.1" 404 2078
[11/Dec/2018 18:46:35] "GET /admin/ HTTP/1.1" 200 6230
[11/Dec/2018 18:46:35] "GET /static/admin/css/dashboard.css HTTP/1.1" 304 0
[11/Dec/2018 18:46:35] "GET /static/admin/css/responsive.css HTTP/1.1" 200 17976
[11/Dec/2018 18:46:35] "GET /static/admin/css/base.css HTTP/1.1" 304 0
[11/Dec/2018 18:46:35] "GET /static/admin/css/fonts.css HTTP/1.1" 304 0
[11/Dec/2018 18:46:35] "GET /static/admin/fonts/Roboto-Light-webfont.woff HTTP/1.1" 200 81348
[11/Dec/2018 18:46:35] "GET /static/admin/fonts/Roboto-Regular-webfont.woff HTTP/1.1" 200 80304
[11/Dec/2018 18:46:35] "GET /static/admin/fonts/Roboto-Bold-webfont.woff HTTP/1.1" 200 82564
[11/Dec/2018 18:46:35] "GET /static/admin/img/icon-changelink.svg HTTP/1.1" 304 0
[11/Dec/2018 18:46:35] "GET /static/admin/img/icon-addlink.svg HTTP/1.1" 304 0
[11/Dec/2018 18:46:35] "GET /static/admin/img/icon-deletelink.svg HTTP/1.1" 304 0
[11/Dec/2018 18:46:38] "GET /admin/loan/applicant/ HTTP/1.1" 200 4808
[11/Dec/2018 18:46:38] "GET /static/admin/css/changelists.css HTTP/1.1" 304 0
[11/Dec/2018 18:46:38] "GET /static/admin/js/jquery.init.js HTTP/1.1" 304 0
[11/Dec/2018 18:46:38] "GET /static/admin/js/core.js HTTP/1.1" 304 0
[11/Dec/2018 18:46:38] "GET /static/admin/js/admin/RelatedObjectLookups.js HTTP/1.1" 304 0
[11/Dec/2018 18:46:38] "GET /static/admin/js/urlify.js HTTP/1.1" 200 8972
[11/Dec/2018 18:46:38] "GET /admin/jsi18n/ HTTP/1.1" 200 3185
[11/Dec/2018 18:46:38] "GET /static/admin/js/prepopulate.js HTTP/1.1" 304 0
[11/Dec/2018 18:46:38] "GET /static/admin/js/actions.js HTTP/1.1" 304 0
[11/Dec/2018 18:46:38] "GET /static/admin/js/vendor/xregexp/xregexp.js HTTP/1.1" 200 128820
[11/Dec/2018 18:46:38] "GET /static/admin/js/vendor/jquery/jquery.js HTTP/1.1" 200 271751
[11/Dec/2018 18:46:38] "GET /static/admin/img/tooltag-add.svg HTTP/1.1" 304 0
[11/Dec/2018 18:46:48] "POST /admin/loan/applicant/ HTTP/1.1" 200 3636
[11/Dec/2018 18:46:48] "GET /static/admin/js/cancel.js HTTP/1.1" 304 0
[11/Dec/2018 18:46:50] "POST /admin/loan/applicant/ HTTP/1.1" 302 0
[11/Dec/2018 18:46:50] "GET /admin/loan/applicant/ HTTP/1.1" 200 3310
[11/Dec/2018 18:46:50] "GET /admin/jsi18n/ HTTP/1.1" 200 3185
[11/Dec/2018 18:46:50] "GET /static/admin/img/icon-yes.svg HTTP/1.1" 304 0
Internal Server Error: /loan/results
Traceback (most recent call last):
File "/home/david/.local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
response = get_response(request)
File "/home/david/.local/lib/python3.6/site-packages/django/core/handlers/base.py", line 126, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/home/david/.local/lib/python3.6/site-packages/django/core/handlers/base.py", line 124, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/david/.local/lib/python3.6/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/home/david/.local/lib/python3.6/site-packages/django/views/generic/base.py", line 88, in dispatch
return handler(request, *args, **kwargs)
File "/home/david/.local/lib/python3.6/site-packages/django/views/generic/list.py", line 142, in get
self.object_list = self.get_queryset()
File "/home/david/loan60/loan/views.py", line 28, in get_queryset
d_test = xgb.DMatrix(data) #changing the data to matrix form
File "/home/david/.local/lib/python3.6/site-packages/xgboost/core.py", line 382, in __init__
self._init_from_npy2d(data, missing, nthread)
File "/home/david/.local/lib/python3.6/site-packages/xgboost/core.py", line 450, in _init_from_npy2d
raise ValueError('Input numpy.ndarray must be 2 dimensional')
ValueError: Input numpy.ndarray must be 2 dimensional
[11/Dec/2018 18:46:57] "GET /loan/results HTTP/1.1" 500 93391
[11/Dec/2018 18:47:04] "GET /loan/ HTTP/1.1" 200 2494
[11/Dec/2018 18:47:09] "POST /loan/ HTTP/1.1" 302 0
Internal Server Error: /loan/results
Traceback (most recent call last):
File "/home/david/.local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
response = get_response(request)
File "/home/david/.local/lib/python3.6/site-packages/django/core/handlers/base.py", line 126, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/home/david/.local/lib/python3.6/site-packages/django/core/handlers/base.py", line 124, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/david/.local/lib/python3.6/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/home/david/.local/lib/python3.6/site-packages/django/views/generic/base.py", line 88, in dispatch
return handler(request, *args, **kwargs)
File "/home/david/.local/lib/python3.6/site-packages/django/views/generic/list.py", line 142, in get
self.object_list = self.get_queryset()
File "/home/david/loan60/loan/views.py", line 27, in get_queryset
data=le.fit_transform(queryset)
File "/home/david/.local/lib/python3.6/site-packages/sklearn/preprocessing/label.py", line 235, in fit_transform
y = column_or_1d(y, warn=True)
File "/home/david/.local/lib/python3.6/site-packages/sklearn/utils/validation.py", line 797, in column_or_1d
raise ValueError("bad input shape {0}".format(shape))
ValueError: bad input shape (1, 10)
答案 0 :(得分：0)
from django.shortcuts import render,redirect
from django.views.generic import View,TemplateView
from django.contrib.auth.models import User
from django.contrib import messages,auth
from sklearn.externals import joblib
import os
from django.http import JsonResponse
from .models import Prediction
from django.contrib import messages
def dashboard(request):
if request.method=='POST':
report = request.POST['report']
patient_id = request.POST['patient_id']
if len(patient_id)!=6:
messages.error(request, 'patient id invalid')
return redirect('dashboard')
elif report == '':
messages.error(request, 'Report is empty')
return redirect('dashboard')
elif patient_id == '':
messages.error(request, 'Patient id is empty')
return redirect('dashboard')
else:
model=joblib.load('naccounts/piped.pkl')
predictions=model.predict([report])
#print (prediction)
messages.success(request, (predictions[0]))
prediction=Prediction(patient_id=patient_id,report=report,predictions=predictions[0])
prediction.save()
return render(request, 'naccounts/dashboard.html')
else:
return render(request,'naccounts/dashboard.html')
def login(request):
if request.method=='POST':
username = request.POST['username']
password = request.POST['password']
user=auth.authenticate(username=username,password=password)
if user is not None:
auth.login(request,user)
messages.success(request,'You are now logged in')
return redirect('dashboard')
else:
messages.error(request,'invalid credentials')
return redirect('index')
else:
return render(request,'index')
def logout(request):
if request.method == 'POST':
auth.logout(request)
return redirect('index')
You can check that code.