How to upload the image with it's encoding binary data?

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• NodeJS base64 image encoding not quite working

  I am using API to get user's profile photo from O365 cloud. Based on the doc it says response contains *The binary data of the requested photo. *

  I would like to use this image to be displayed by Data URI format. Ex:-

  "data:image/png;base64,iVBORw0KGgoAAA ANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4 //8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU 5ErkJggg=="

  where everything after data:image/png;base64,.... is image data in Base64.

  I unable to get Base64 encoding working for the image data I am getting from API. Not sure if I am consuming raw binary img data correctly and converting it correctly to Base64.

  To verify: I upload my URI data here to online editor & it never parses my data/image. Instead if I upload an image here & to get Base64 data then upload URI in 1st editor it does display correctly. So I am guessing by Base64 conversation isn't correct.

  CODE in nodejs:-

  let base64ImgTry1 = Buffer.from('binary-data-from-api').toString('base64')
  
  //OR
  
  var base64ImgTry2 = new Buffer('binary-data-from-api','binary').toString('base64');
  
  let imgURI_1 = 'data:image/png;base64,' +base64ImgTry1
  let imgURI_2 = 'data:image/png;base64,' +base64ImgTry1
  

  none of these imgURI_1 , imgURI_2 works. Not sure if I am going wrong consuming binary-data-from-api.

  I also tried this NPM library https://www.npmjs.com/package/image-data-uri

  in which i used this method -> encode(data, mediaType) where data was direct response from API.

  https://www.site24x7.com/tools/datauri-to-image.html
• How to decode Base64 encoding of a SHA256 hash in JAVA

  I am trying to decode Base64 encoding of a SHA256 to hash SHA256

  (Base64 encoding of a SHA256 in database) qcvcu40M9h9UH9rkrCjjT3CujLyDj/XPD/OMIHGX2PY= (44 length)

  To convert it to SHA256 HASH 1751f72c730da90e3c6f88ab900c61f491d57d98d148e309d1704141e1b4e586 (64 length)

  --- Not working codes --

  String value = "qcvcu40M9h9UH9rkrCjjT3CujLyDj/XPD/OMIHGX2PY=";

  byte[] decode = Base64.decodeBase64(value);

  value = new String(decode, Charset.forName("UTF-8"));
• Angular 6 extract value from decoded string base 64

  I've decoded a string in Base64 with xml2js library and i got this value :

  <?xml version="1.0" encoding="UTF-8" standalone="no"?>
  <svg width="293" height="102"
   viewBox="0 0 293 102"
   xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"  version="1.2" baseProfile="tiny">
  <image 
  width="293" 
  height="102" 
  xlink:href="data:image/png;base64,iVBORw0KGgoAAAANS......pASYAAAAASUVORK5CYII=" />
  </svg>
  

  i cut the encode value because it's to long

  I'm blocked for getting the value of xlink:href, is there any technics or library for getting the attribute ?

  I mean i want to get this value only : data:image/png;base64,iVBORw0KGgoAAAANS......pASYAAAAASUVORK5CYII=

  Thank's
• ERROR requests return Response [503] If LINK link die or LINK live.I use bs4 python

  i want crawl data from amazon,requests respone error 503,404,200 then i will check link die or live. But current link die or link live or link not found will respone 503.i dont know how check link ?.if respone 200 then will clear for software of me. THANKS YOUR HELP ME!!!!

  link = "https://www.amazon.com/dp/B07K896272"enter code here
  browser = webdriver.Firefox(executable_path=r'D:\PythonTool\AmzTool\geckodriver.exe')
  browser.get(link)
  res = requests.get(str(link).strip())
  print(str(res))
  
• Removing noise from from a graph

  I am a new python user. I have just tried to read a .dat file and the figure shows like that. How can I remove noise from my figure? Expecting suggestions from experts. Thanks. The png file of the figure and the python code is given below:

  power spectrum

  >>> import numpy as np
  >>> import matplotlib.pyplot as plt
  >>> data=np.loadtxt('lcdm_pk003_B.dat')
  >>> plt.plot(data[:,0],data[:,1],'bo')
  [<matplotlib.lines.Line2D object at 0x7f3af81b3590>]
  >>> x=data[:,0]
  >>> y=data[:,1]
  >>> plt.xlabel('k[h/Mpc]')
  <matplotlib.text.Text object at 0x7f3afc7815d0>
  >>> plt.ylabel('P(k)')
  <matplotlib.text.Text object at 0x7f3af8242bd0>
  >>> plt.xscale('log')
  >>> plt.yscale('log')
  >>> plt.plot(x,y,':ro')
  
• curl and python cookies are different

  I have a set of curl commands that I'm trying to convert into python requests but I'm getting stuck on the cookies. In curl the instructions say to make a cookies file by

  curl 'https://signon.jgi.doe.gov/signon/create' --data-urlencode 'login=USER_NAME' --data-urlencode 'password=USER_PASSWORD' -c cookies > /dev/null
  

  Which gives me the following file

  # Netscape HTTP Cookie File
  # https://curl.haxx.se/docs/http-cookies.html
  # This file was generated by libcurl! Edit at your own risk.
  
  .jgi.doe.gov    TRUE    /       FALSE   0       jgi_session     <REDACTED>
  #HttpOnly_signon-old.jgi.doe.gov        FALSE   /       FALSE   0       _caliban_session        <REDACTED>
  

  When I try the same thing in requests:

  import requests
  get_cookie = requests.post('https://signon.jgi.doe.gov/signon/create', data={'login':<USERNAME>, 'password': <PASSWORD>})
  get_cookie.cookies
      <RequestsCookieJar[Cookie(version=0, name='_caliban_session', value='<REDACTED>', port=None, port_specified=False, domain='signon.jgi.doe.gov', domain_specified=False, domain_initial_dot=False, path='/', path_specified=True, secure=False, expires=None, discard=True, comment=None, comment_url=None, rest={'HttpOnly': None}, rfc2109=False)]>
  

  The cookie that gets returned is the _caliban_session, which is commented out in the curl cookie file. The correct cookie, with the jgi_session in it doesn't appear to be returned. As a result my subsequent requests using the cookie are denied.

  Why is it that the cookies are different between python and curl? and how can I get the python requests to match the curl cookie?