import numpy as np
import time,sys
import requests
import json
import matplotlib
import matplotlib as mpl
mpl.use('Agg')

import matplotlib.pyplot as plt
import datetime
import os
import urllib
import urllib.request
import urllib.parse
import base64
#import cv2
from PIL import Image
import time
def c21():
    head = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36',
    }

    url = ("http://52.195.10.119/MQTT/c21a.php")
    res = requests.post(url, headers=head)
    a =json.loads(res.text)
    time1a = int(a['time1a'])
    time2a = int(a['time2a'])
    time3a = int(a['time3a'])
    time4a = int(a['time4a'])
    time5a = int(a['time5a'])
    time6a = int(a['time6a'])
    time7a = int(a['time7a'])
    time8a = int(a['time8a'])
    time9a = int(a['time9a'])
    print(time1a)
    if (time1a == 0):
        print('wow')
    elif (time1a == 1):
        print('1')
        img21_1()
        print('2')
        throw21()
        print('3')
    if (time2a == 0):
        print('wow')
    elif (time2a == 1):
        print('1')
        img21_2()
        print('2')
        throw21()
        print('3')
    if (time3a == 0):
        print('wow')
    elif (time3a == 1):
        print('1')
        img21_3()
        print('2')
        throw21()
        print('3')
    if (time4a == 0):
        print('wow')
    elif (time4a == 1):
        print('1')
        img21_4()
        print('2')
        throw21()
        print('3')
    if (time5a == 0):
        print('wow')
    elif (time5a == 1):
        print('1')
        img21_5()
        print('2')
        throw21()
        print('3')
    if (time6a == 0):
        print('wow')
    elif (time6a == 1):
        print('1')
        img21_6()
        print('2')
        throw21()
        print('3')
    if (time7a == 0):
        print('wow')
    elif (time7a == 1):
        print('1')
        img21_7()
        print('2')
        throw21()
        print('3')
    if (time8a == 0):
        print('wow')
    elif (time8a == 1):
        print('1')
        img21_8()
        print('2')
        throw21()
        print('3')
    if (time9a == 0):
        print('wow')
    elif (time9a == 1):
        print('1')
        img21_9()
        print('2')
        throw21()
        print('3')
def img21_1():  
  ndvis = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvi1/%Y-%m-%d_%H.%M.tif') #ndvi is time.tif
  ndvia = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia1/%Y-%m-%d_%H.%M.png')  #ndvi is time.png
  ndviajpg = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia/c.png')  #ndvi is c.png
  irt = datetime.datetime.now().strftime('/var/www/html/cust/21/ir1/%Y-%m-%d_%H.%M.tif')  # irtif is time.tif
  nt = datetime.datetime.now().strftime('/var/www/html/cust/21/n1/%Y-%m-%d_%H.%M.tif')  # ntif is time.tif
  irj = datetime.datetime.now().strftime('/var/www/html/cust/21/irj1/%Y-%m-%d_%H.%M.jpg')  # irjpg is time.jpg
  nj = datetime.datetime.now().strftime('/var/www/html/cust/21/nj1/%Y-%m-%d_%H.%M.jpg')  # njpg is time.jpg
  date = datetime.datetime.now().strftime('\n%Y-%m-%d_%H.%Mn')
  
  rgb_img0 = Image.open('/var/www/html/cust/21/c/a1.tif')
  ir_img0 = Image.open('/var/www/html/cust/21/c/b1.tif')

  rgb_img0.save(nt)
  ir_img0.save(irt)

  rgb_img0.save(nj,quality=95)
  ir_img0.save(irj,quality=95)

  r,_,_ = rgb_img0.split()
  r = np.asarray(r, dtype=float)
    
    
  ir,_,_ = ir_img0.split()
  ir = np.asarray(ir, dtype=float)
    
    
  ndvi = np.zeros(r.size)  # The NDVI image will be the same size as the input image
    
    
  np.seterr(divide='ignore', invalid='ignore')
  ndvi = np.true_divide(np.subtract(ir, r), np.add(ir, r))
          
  
  # Display the results
  plt.plot(ndvi)
  plt.imshow(ndvi, cmap=plt.cm.get_cmap('Spectral'))
  plt.colorbar()
  #plt.show() 
  plt.savefig(ndvis)
  plt.savefig(ndvia)
  plt.savefig(ndviajpg)
  plt.close('all')
  f = open('/var/www/html/cust/c21_1.txt','a')
  f.write(date)
  f.close()
  #plt.close(na)
def img21_2():  
  ndvis = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvi2/%Y-%m-%d_%H.%M.tif') #ndvi is time.tif
  ndvia = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia2/%Y-%m-%d_%H.%M.png')  #ndvi is time.png
  ndviajpg = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia/c.png')  #ndvi is c.png
  irt = datetime.datetime.now().strftime('/var/www/html/cust/21/ir2/%Y-%m-%d_%H.%M.tif')  # irtif is time.tif
  nt = datetime.datetime.now().strftime('/var/www/html/cust/21/n2/%Y-%m-%d_%H.%M.tif')  # ntif is time.tif
  irj = datetime.datetime.now().strftime('/var/www/html/cust/21/irj2/%Y-%m-%d_%H.%M.jpg')  # irjpg is time.jpg
  nj = datetime.datetime.now().strftime('/var/www/html/cust/21/nj2/%Y-%m-%d_%H.%M.jpg')  # njpg is time.jpg
  date = datetime.datetime.now().strftime('\n%Y-%m-%d_%H.%Mn')
  
  rgb_img0 = Image.open('/var/www/html/cust/21/c/a2.tif')
  ir_img0 = Image.open('/var/www/html/cust/21/c/b2.tif')

  rgb_img0.save(nt)
  ir_img0.save(irt)

  rgb_img0.save(nj,quality=95)
  ir_img0.save(irj,quality=95)

  r,_,_ = rgb_img0.split()
  r = np.asarray(r, dtype=float)
    
    
  ir,_,_ = ir_img0.split()
  ir = np.asarray(ir, dtype=float)
    
    
  ndvi = np.zeros(r.size)  # The NDVI image will be the same size as the input image
    
    
  np.seterr(divide='ignore', invalid='ignore')
  ndvi = np.true_divide(np.subtract(ir, r), np.add(ir, r))
          
  
  # Display the results
  plt.plot(ndvi)
  plt.imshow(ndvi, cmap=plt.cm.get_cmap('Spectral'))
  plt.colorbar()
  #plt.show() 
  plt.savefig(ndvis)
  plt.savefig(ndvia)
  plt.savefig(ndviajpg)
  plt.close('all')
  f = open('/var/www/html/cust/c21_2.txt','a')
  f.write(date)
  f.close()
def img21_3():  
  ndvis = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvi3/%Y-%m-%d_%H.%M.tif') #ndvi is time.tif
  ndvia = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia3/%Y-%m-%d_%H.%M.png')  #ndvi is time.png
  ndviajpg = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia/c.png')  #ndvi is c.png
  irt = datetime.datetime.now().strftime('/var/www/html/cust/21/ir3/%Y-%m-%d_%H.%M.tif')  # irtif is time.tif
  nt = datetime.datetime.now().strftime('/var/www/html/cust/21/n3/%Y-%m-%d_%H.%M.tif')  # ntif is time.tif
  irj = datetime.datetime.now().strftime('/var/www/html/cust/21/irj3/%Y-%m-%d_%H.%M.jpg')  # irjpg is time.jpg
  nj = datetime.datetime.now().strftime('/var/www/html/cust/21/nj3/%Y-%m-%d_%H.%M.jpg')  # njpg is time.jpg
  date = datetime.datetime.now().strftime('\n%Y-%m-%d_%H.%Mn')
  
  rgb_img0 = Image.open('/var/www/html/cust/21/c/a3.tif')
  ir_img0 = Image.open('/var/www/html/cust/21/c/b3.tif')

  rgb_img0.save(nt)
  ir_img0.save(irt)

  rgb_img0.save(nj,quality=95)
  ir_img0.save(irj,quality=95)

  r,_,_ = rgb_img0.split()
  r = np.asarray(r, dtype=float)
    
    
  ir,_,_ = ir_img0.split()
  ir = np.asarray(ir, dtype=float)
    
    
  ndvi = np.zeros(r.size)  # The NDVI image will be the same size as the input image
    
    
  np.seterr(divide='ignore', invalid='ignore')
  ndvi = np.true_divide(np.subtract(ir, r), np.add(ir, r))
          
  
  # Display the results
  plt.plot(ndvi)
  plt.imshow(ndvi, cmap=plt.cm.get_cmap('Spectral'))
  plt.colorbar()
  #plt.show() 
  plt.savefig(ndvis)
  plt.savefig(ndvia)
  plt.savefig(ndviajpg)
  plt.close('all')
  f = open('/var/www/html/cust/c21_3.txt','a')
  f.write(date)
  f.close()
def img21_4():  
  ndvis = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvi4/%Y-%m-%d_%H.%M.tif') #ndvi is time.tif
  ndvia = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia4/%Y-%m-%d_%H.%M.png')  #ndvi is time.png
  ndviajpg = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia/c.png')  #ndvi is c.png
  irt = datetime.datetime.now().strftime('/var/www/html/cust/21/ir4/%Y-%m-%d_%H.%M.tif')  # irtif is time.tif
  nt = datetime.datetime.now().strftime('/var/www/html/cust/21/n4/%Y-%m-%d_%H.%M.tif')  # ntif is time.tif
  irj = datetime.datetime.now().strftime('/var/www/html/cust/21/irj4/%Y-%m-%d_%H.%M.jpg')  # irjpg is time.jpg
  nj = datetime.datetime.now().strftime('/var/www/html/cust/21/nj4/%Y-%m-%d_%H.%M.jpg')  # njpg is time.jpg
  date = datetime.datetime.now().strftime('\n%Y-%m-%d_%H.%Mn')
  
  rgb_img0 = Image.open('/var/www/html/cust/21/c/a4.tif')
  ir_img0 = Image.open('/var/www/html/cust/21/c/b4.tif')

  rgb_img0.save(nt)
  ir_img0.save(irt)

  rgb_img0.save(nj,quality=95)
  ir_img0.save(irj,quality=95)

  r,_,_ = rgb_img0.split()
  r = np.asarray(r, dtype=float)
    
    
  ir,_,_ = ir_img0.split()
  ir = np.asarray(ir, dtype=float)
    
    
  ndvi = np.zeros(r.size)  # The NDVI image will be the same size as the input image
    
    
  np.seterr(divide='ignore', invalid='ignore')
  ndvi = np.true_divide(np.subtract(ir, r), np.add(ir, r))
          
  
  # Display the results
  plt.plot(ndvi)
  plt.imshow(ndvi, cmap=plt.cm.get_cmap('Spectral'))
  plt.colorbar()
  #plt.show() 
  plt.savefig(ndvis)
  plt.savefig(ndvia)
  plt.savefig(ndviajpg)
  plt.close('all')
  f = open('/var/www/html/cust/c21_4.txt','a')
  f.write(date)
  f.close()
def img21_5():  
  ndvis = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvi5/%Y-%m-%d_%H.%M.tif') #ndvi is time.tif
  ndvia = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia5/%Y-%m-%d_%H.%M.png')  #ndvi is time.png
  ndviajpg = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia/c.png')  #ndvi is c.png
  irt = datetime.datetime.now().strftime('/var/www/html/cust/21/ir5/%Y-%m-%d_%H.%M.tif')  # irtif is time.tif
  nt = datetime.datetime.now().strftime('/var/www/html/cust/21/n5/%Y-%m-%d_%H.%M.tif')  # ntif is time.tif
  irj = datetime.datetime.now().strftime('/var/www/html/cust/21/irj5/%Y-%m-%d_%H.%M.jpg')  # irjpg is time.jpg
  nj = datetime.datetime.now().strftime('/var/www/html/cust/21/nj5/%Y-%m-%d_%H.%M.jpg')  # njpg is time.jpg
  date = datetime.datetime.now().strftime('\n%Y-%m-%d_%H.%Mn')
  
  rgb_img0 = Image.open('/var/www/html/cust/21/c/a5.tif')
  ir_img0 = Image.open('/var/www/html/cust/21/c/b5.tif')

  rgb_img0.save(nt)
  ir_img0.save(irt)

  rgb_img0.save(nj,quality=95)
  ir_img0.save(irj,quality=95)

  r,_,_ = rgb_img0.split()
  r = np.asarray(r, dtype=float)
    
    
  ir,_,_ = ir_img0.split()
  ir = np.asarray(ir, dtype=float)
    
    
  ndvi = np.zeros(r.size)  # The NDVI image will be the same size as the input image
    
    
  np.seterr(divide='ignore', invalid='ignore')
  ndvi = np.true_divide(np.subtract(ir, r), np.add(ir, r))
          
  
  # Display the results
  plt.plot(ndvi)
  plt.imshow(ndvi, cmap=plt.cm.get_cmap('Spectral'))
  plt.colorbar()
  #plt.show() 
  plt.savefig(ndvis)
  plt.savefig(ndvia)
  plt.savefig(ndviajpg)
  plt.close('all')
  f = open('/var/www/html/cust/c21_5.txt','a')
  f.write(date)
  f.close()
def img21_6():  
  ndvis = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvi6/%Y-%m-%d_%H.%M.tif') #ndvi is time.tif
  ndvia = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia6/%Y-%m-%d_%H.%M.png')  #ndvi is time.png
  ndviajpg = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia/c.png')  #ndvi is c.png
  irt = datetime.datetime.now().strftime('/var/www/html/cust/21/ir6/%Y-%m-%d_%H.%M.tif')  # irtif is time.tif
  nt = datetime.datetime.now().strftime('/var/www/html/cust/21/n6/%Y-%m-%d_%H.%M.tif')  # ntif is time.tif
  irj = datetime.datetime.now().strftime('/var/www/html/cust/21/irj6/%Y-%m-%d_%H.%M.jpg')  # irjpg is time.jpg
  nj = datetime.datetime.now().strftime('/var/www/html/cust/21/nj6/%Y-%m-%d_%H.%M.jpg')  # njpg is time.jpg
  date = datetime.datetime.now().strftime('\n%Y-%m-%d_%H.%Mn')
  
  rgb_img0 = Image.open('/var/www/html/cust/21/c/a6.tif')
  ir_img0 = Image.open('/var/www/html/cust/21/c/b6.tif')

  rgb_img0.save(nt)
  ir_img0.save(irt)

  rgb_img0.save(nj,quality=95)
  ir_img0.save(irj,quality=95)

  r,_,_ = rgb_img0.split()
  r = np.asarray(r, dtype=float)
    
    
  ir,_,_ = ir_img0.split()
  ir = np.asarray(ir, dtype=float)
    
    
  ndvi = np.zeros(r.size)  # The NDVI image will be the same size as the input image
    
    
  np.seterr(divide='ignore', invalid='ignore')
  ndvi = np.true_divide(np.subtract(ir, r), np.add(ir, r))
          
  
  # Display the results
  plt.plot(ndvi)
  plt.imshow(ndvi, cmap=plt.cm.get_cmap('Spectral'))
  plt.colorbar()
  #plt.show() 
  plt.savefig(ndvis)
  plt.savefig(ndvia)
  plt.savefig(ndviajpg)
  plt.close('all')
  f = open('/var/www/html/cust/c21_6.txt','a')
  f.write(date)
  f.close()
def img21_7():  
  ndvis = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvi7/%Y-%m-%d_%H.%M.tif') #ndvi is time.tif
  ndvia = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia7/%Y-%m-%d_%H.%M.png')  #ndvi is time.png
  ndviajpg = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia/c.png')  #ndvi is c.png
  irt = datetime.datetime.now().strftime('/var/www/html/cust/21/ir7/%Y-%m-%d_%H.%M.tif')  # irtif is time.tif
  nt = datetime.datetime.now().strftime('/var/www/html/cust/21/n7/%Y-%m-%d_%H.%M.tif')  # ntif is time.tif
  irj = datetime.datetime.now().strftime('/var/www/html/cust/21/irj7/%Y-%m-%d_%H.%M.jpg')  # irjpg is time.jpg
  nj = datetime.datetime.now().strftime('/var/www/html/cust/21/nj7/%Y-%m-%d_%H.%M.jpg')  # njpg is time.jpg
  date = datetime.datetime.now().strftime('\n%Y-%m-%d_%H.%Mn')
  
  rgb_img0 = Image.open('/var/www/html/cust/21/c/a7.tif')
  ir_img0 = Image.open('/var/www/html/cust/21/c/b7.tif')

  rgb_img0.save(nt)
  ir_img0.save(irt)

  rgb_img0.save(nj,quality=95)
  ir_img0.save(irj,quality=95)

  r,_,_ = rgb_img0.split()
  r = np.asarray(r, dtype=float)
    
    
  ir,_,_ = ir_img0.split()
  ir = np.asarray(ir, dtype=float)
    
    
  ndvi = np.zeros(r.size)  # The NDVI image will be the same size as the input image
    
    
  np.seterr(divide='ignore', invalid='ignore')
  ndvi = np.true_divide(np.subtract(ir, r), np.add(ir, r))
          
  
  # Display the results
  plt.plot(ndvi)
  plt.imshow(ndvi, cmap=plt.cm.get_cmap('Spectral'))
  plt.colorbar()
  #plt.show() 
  plt.savefig(ndvis)
  plt.savefig(ndvia)
  plt.savefig(ndviajpg)
  plt.close('all')
  f = open('/var/www/html/cust/c21_7.txt','a')
  f.write(date)
  f.close()
def img21_8():  
  ndvis = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvi8/%Y-%m-%d_%H.%M.tif') #ndvi is time.tif
  ndvia = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia8/%Y-%m-%d_%H.%M.png')  #ndvi is time.png
  ndviajpg = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia/c.png')  #ndvi is c.png
  irt = datetime.datetime.now().strftime('/var/www/html/cust/21/ir8/%Y-%m-%d_%H.%M.tif')  # irtif is time.tif
  nt = datetime.datetime.now().strftime('/var/www/html/cust/21/n8/%Y-%m-%d_%H.%M.tif')  # ntif is time.tif
  irj = datetime.datetime.now().strftime('/var/www/html/cust/21/irj8/%Y-%m-%d_%H.%M.jpg')  # irjpg is time.jpg
  nj = datetime.datetime.now().strftime('/var/www/html/cust/21/nj8/%Y-%m-%d_%H.%M.jpg')  # njpg is time.jpg
  date = datetime.datetime.now().strftime('\n%Y-%m-%d_%H.%Mn')
  
  rgb_img0 = Image.open('/var/www/html/cust/21/c/a8.tif')
  ir_img0 = Image.open('/var/www/html/cust/21/c/b8.tif')

  rgb_img0.save(nt)
  ir_img0.save(irt)

  rgb_img0.save(nj,quality=95)
  ir_img0.save(irj,quality=95)

  r,_,_ = rgb_img0.split()
  r = np.asarray(r, dtype=float)
    
    
  ir,_,_ = ir_img0.split()
  ir = np.asarray(ir, dtype=float)
    
    
  ndvi = np.zeros(r.size)  # The NDVI image will be the same size as the input image
    
    
  np.seterr(divide='ignore', invalid='ignore')
  ndvi = np.true_divide(np.subtract(ir, r), np.add(ir, r))
          
  
  # Display the results
  plt.plot(ndvi)
  plt.imshow(ndvi, cmap=plt.cm.get_cmap('Spectral'))
  plt.colorbar()
  #plt.show() 
  plt.savefig(ndvis)
  plt.savefig(ndvia)
  plt.savefig(ndviajpg)
  plt.close('all')
  f = open('/var/www/html/cust/c21_8.txt','a')
  f.write(date)
  f.close()
def img21_9():  
  ndvis = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvi/%Y-%m-%d_%H.%M.tif') #ndvi is time.tif
  ndvia = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia/%Y-%m-%d_%H.%M.png')  #ndvi is time.png
  ndviajpg = datetime.datetime.now().strftime('/var/www/html/cust/21/ndvia/c.png')  #ndvi is c.png
  irt = datetime.datetime.now().strftime('/var/www/html/cust/21/ir/%Y-%m-%d_%H.%M.tif')  # irtif is time.tif
  nt = datetime.datetime.now().strftime('/var/www/html/cust/21/n/%Y-%m-%d_%H.%M.tif')  # ntif is time.tif
  irj = datetime.datetime.now().strftime('/var/www/html/cust/21/irj/%Y-%m-%d_%H.%M.jpg')  # irjpg is time.jpg
  nj = datetime.datetime.now().strftime('/var/www/html/cust/21/nj/%Y-%m-%d_%H.%M.jpg')  # njpg is time.jpg
  date = datetime.datetime.now().strftime('\n%Y-%m-%d_%H.%Mn')
  
  rgb_img0 = Image.open('/var/www/html/cust/21/c/a.tif')
  ir_img0 = Image.open('/var/www/html/cust/21/c/b.tif')

  rgb_img0.save(nt)
  ir_img0.save(irt)

  rgb_img0.save(nj,quality=95)
  ir_img0.save(irj,quality=95)

  r,_,_ = rgb_img0.split()
  r = np.asarray(r, dtype=float)
    
    
  ir,_,_ = ir_img0.split()
  ir = np.asarray(ir, dtype=float)
    
    
  ndvi = np.zeros(r.size)  # The NDVI image will be the same size as the input image
    
    
  np.seterr(divide='ignore', invalid='ignore')
  ndvi = np.true_divide(np.subtract(ir, r), np.add(ir, r))
          
  
  # Display the results
  plt.plot(ndvi)
  plt.imshow(ndvi, cmap=plt.cm.get_cmap('Spectral'))
  plt.colorbar()
  #plt.show() 
  plt.savefig(ndvis)
  plt.savefig(ndvia)
  plt.savefig(ndviajpg)
  plt.close('all')
  f = open('/var/www/html/cust/c21.txt','a')
  f.write(date)
  f.close()
def throw21():
      dress = '/var/www/html/cust/21/c/'
      for root, dirs, files in os.walk(dress):
          print('files: {}'.format(len(files)))
          if len(files)>=1:
              files.sort()
              for f in files:
                  with open(os.path.join(root, f), "rb") as imageFile:
                      str = base64.b64encode(imageFile.read())
                  url = 'http://60.250.156.234/cust/t21.php'
                  values = {'data1':str, 'name':f}
                  data1 = urllib.parse.urlencode(values)
                  data1 = data1.encode('utf-8')
                  req = urllib.request.Request(url, data1)
                  req.add_header('User-Agent','Magic Browser')
                  resp = urllib.request.urlopen(req)
                  respdata1 = resp.read()
                  print(os.path.join(root, f))
                  #print(respdata1)
                  os.remove(os.path.join(root, f))
                  print("ok")
      url = 'http://52.195.10.119/MQTT/BBtoNDVI.php'
      data = {'nrs': 'KDARES21'}
      data = urllib.parse.urlencode(data)
      data = data.encode('utf-8')
      req = urllib.request.Request(url, data)
      req.add_header('User-Agent', 'Magic Browser')
      resp = urllib.request.urlopen(req)
      respData = resp.read()
      print("ok")
while True:
    c21()