这段代码使用flask获取系统性能阅读，并使用每秒刷新一次的Chart将其绘制在Django网页上。我正在尝试将数据存储到postgresql中，但它不起作用。没有数据被插入到在数据库中创建的表中。
views.py

from django.shortcuts import render
import requests
from django.http import HttpResponse, request
from .models import Usage

def monitor(request):
    url = "http://127.0.0.1:5000/stats"
    data = requests.get(url)
    print(data.text)
    data2 = data.text
    return render(request, "home.html", {'alldata': data2})

def cpu_monitor(request):
    url = "http://127.0.0.1:5000/cpu"
    cpu_data = requests.get(url)
    cpu_data2 = cpu_data.json()

    for key in cpu_data2:
        cpu = cpu_data2['CPU']
        time = cpu_data2['Time']
        print(cpu)
        print(time)
        val = key

    return render(request, "chart.html", {'data': val})

def cp(request):
    url = "http://127.0.0.1:5000/cpu"
    cpu_data = requests.get(url)
    cpu_data2 = cpu_data.json()

    for key in cpu_data2:
        cpu = cpu_data2['CPU']
        time = cpu_data2['Time']
        print(cpu)
        print(time)
        val = [cpu]

    return HttpResponse(val)

def mm(request):
    url = "http://127.0.0.1:5000/memory"
    memory_data = requests.get(url)
    memory_data2 = memory_data.json()

    for key in memory_data2:
        memory = memory_data2['Memory Percentage']
        time = memory_data2['Time']
        print(memory)
        print(time)
        mem = [memory]

    return HttpResponse(mem)

def dk(request):
    url = "http://127.0.0.1:5000/disk"
    disk_data = requests.get(url)
    disk_data2 = disk_data.json()

    for key in disk_data2:
        disk = disk_data2['Used Partition']
        time = disk_data2['Time']
        print(disk)
        print(time)
        dsk = [disk]

    return HttpResponse(dsk)

def dkf(request):
    url = "http://127.0.0.1:5000/diskfree"
    free_disk_data = requests.get(url)
    free_disk_data2 = free_disk_data.json()

    for key in free_disk_data2:
        free_disk = free_disk_data2['Free Partition']
        time = free_disk_data2['Time']
        print(free_disk)
        print(time)
        dskf = [free_disk]

    return HttpResponse(dskf)

def ib(request):
    url = "http://127.0.0.1:5000/inb"
    ib_data = requests.get(url)
    ib_data2 = ib_data.json()

    for key in ib_data2:
        ibn = ib_data2['Received Bytes']
        time = ib_data2['Time']
        print(ibn)
        print(time)
        ibd = [ibn]

    return HttpResponse(ibd)

def ob(request):
    url = "http://127.0.0.1:5000/oub"
    ob_data = requests.get(url)
    ob_data2 = ob_data.json()

    for key in ob_data2:
        obn = ob_data2['Received Bytes']
        time = ob_data2['Time']
        print(obn)
        print(time)
        obd = [obn]

    return HttpResponse(obd)

def insert():
    sysMon = Usage
    sysMon.cpu = cp(request)
    sysMon.memory = mm(request)
    sysMon.freeDisk = dk(request)
    sysMon.usedDisk = dkf(request)
    sysMon.inbound = ib(request)
    sysMon.outbound = ob(request)
    sysMon.save()

models.py

from django.db import models

class Usage(models.Model):

    cpu = models.CharField(max_length=200, null=True)
    memory = models.CharField(max_length=200, null=True)
    freeDisk = models.CharField(max_length=200, null=True)
    usedDisk = models.CharField(max_length=200, null=True)
    inbound = models.CharField(max_length=200, null=True)
    outbound = models.CharField(max_length=200, null=True)

任何帮助都将不胜感激。