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Passing a value form python file to the iOS app

I need to create and iOS app that is basically a mobile GitHub repository browser. A user passes their input and they get the search results for the repositories.
I have tried approaching it from the basic http point of view, but to na avail (check out this question):
How to print my http query results in Xcode?
And now with support from #HedgeHog I have found a piece of code which does exactly what the backend to my app should do; but is written in Python:
import requests, sys, webbrowser, bs4
print('Your GitHub repository search query:')
userInput = input()
results = requests.get('https://github.com/search?q=' + userInput + '&type=repositories'
+ ' '.join(sys.argv[1:]))
results.raise_for_status()
soup = bs4.BeautifulSoup(results.text, 'html.parser')
linkList = ['https://github.com/'+a['href'] for a in soup.select('.repo-list-item .f4 a[href]')]
As I have also learned, PythonKit doesn't support iOS apps.
Is there any way that I could put a *.py file in the Xcode project and that Xcode could run it as a function (pass an input from a Swift to the Python file, then receive an output to the Swift file)?

Python + selenium download image without extension

I'm using python 3 with selenium, I have to download an image
HTML:
<img id="labelImage" name="labelImage" border="0" width="672" height="456" alt="labelImage" src="/shipping/labelAction.handle?method=doGetLabelFromCache&isDecompressRequired=false&utype=null&cacheKey=774242409034SHIPPING_L">
Python code:
found = browser.find_element_by_css_selector('img[alt="labelImage"]')
src = found.get_attribute('src')
urllib.request.urlretrieve(src, 'image.png')
that image file is empty, if I try to switch extension to html, shows me message below:
"We're sorry, we can't process your request right now. It appears you don't have permission to view this webpage"

The error you recieve when attempt to download comes from the fact the urllib call is a brand new session for their server - it does not have the cookies and authentication your browser does. E.g. it is the same as if you open incognito mode in the browser, and paste in the address bar the src attribute - for the server you are a new client, that hasn't fill in the form, logged in, etc.
You may want to try something else - in the selenium/the browser session, taking a screenshot of just the <img> element. That op is with variable success, Chrome for instance added support for it only recently, and in some situations it fails:
found = browser.find_element_by_css_selector('img[alt="labelImage"]')
try:
found.screenshot('element.png')
except Exception as ex: # FIXME: anti-pattern - I don't recall the exact exception - when you run the code, change it to the proper one
print('The correct exception is {}'.format(ex))
browser.get_screenshot_as_file('page.png')
If taking the element's screenshot fails, you'll get one of the whole page - which you can then trim to the element.

Python configure pdfkit on windows

I started to learn python recently and I want to convert existing html file to pdf file. It is very strange, but pdfkit seems to be the only lib for pdf docs for python.
import pdfkit
pdfkit.from_file("C:\\Users\\user\Desktop\\table.html", "out.pdf")
An error occurs:
OSError: No wkhtmltopdf executable found: "b''"
How to configure this lib properly on windows to make it work? I can't get it :(

It looks like you need to install wkhtmltopdf. For windows, the installer can be found at https://wkhtmltopdf.org/downloads.html
Also check out a post by this guy, who is having the same problem: Can't create pdf using python PDFKIT Error : " No wkhtmltopdf executable found:"

I found working solution.
If you want to convert files to pdf format just don't use python for this purpose.
You need to include DOMPDF library into your php script on your local/remove server. Something like this:
<?php
// include autoloader
require_once 'vendor/autoload.php';
// reference the Dompdf namespace
use Dompdf\Dompdf;
if (isset($_POST['html']) && !empty($_POST['html'])) {
// instantiate and use the dompdf class
$dompdf = new Dompdf();
$dompdf->loadHtml($_POST['html']);
// (Optional) Setup the paper size and orientation
$dompdf->setPaper('A4', 'landscape');
// Render the HTML as PDF
$dompdf->render();
// Output the generated PDF to Browser
$dompdf->stream();
} else {
exit();
}
Then in your python script you can post your html or whatever content to your server and get generated pdf file as a response. Something like this:
import requests
url = 'http://example.com/html2pdf.php'
html = '<h1>hello</h1>'
r = requests.post(url, data={'html': html}, stream=True)
f = open('converted.pdf', 'wb')
f.write(r.content)
f.close()

How do I use python requests to download a processed files?

I'm using Django 1.8.1 with Python 3.4 and i'm trying to use requests to download a processed file. The following code works perfect for a normal request.get command to download the exact file at the server location, or unprocessed file.
The file needs to get processed based on the passed data (shown below as "data"). This data will need to get passed into the Django backend, and based off the text pass variables to run an internal program from the server and output .gcode instead .stl filetype.
python file.
import requests, os, json
SERVER='http://localhost:8000'
authuser = 'admin#google.com'
authpass = 'passwords'
#data not implimented
##############################################
data = {FirstName:Steve,Lastname:Escovar}
############################################
category = requests.get(SERVER + '/media/uploads/9128342/141303729.stl', auth=(authuser, authpass))
#download to path file
path = "/home/bradman/Downloads/requestdata/newfile.stl"
if category.status_code == 200:
with open(path, 'wb') as f:
for chunk in category:
f.write(chunk)
I'm very confused about this, but I think the best course of action is to pass the data along with request.get, and somehow make some function to grab them inside my views.py for Django. Anyone have any ideas?

To use data in request you can do
get( ... , params=data)
(and you get data as parameters in url)
or
post( ... , data=data).
(and you send data in body - like HTML form)
BTW. some APIs need params= and data= in one request of GET or POST to send all needed information.
Read requests documentation

Upload image to facebook using the Python API

I have searched the web far and wide for a still working example of uploading a photo to facebook through the Python API (Python for Facebook). Questions like this have been asked on stackoverflow before but non of the answers I have found work anymore.
What I got working is:
import facebook as fb
cfg = {
"page_id" : "my_page_id",
"access_token" : "my_access_token"
}
api = get_api(cfg)
msg = "Hello world!"
status = api.put_wall_post(msg)
where I have defined the get_api(cfg) function as this
graph = fb.GraphAPI(cfg['access_token'], version='2.2')
# Get page token to post as the page. You can skip
# the following if you want to post as yourself.
resp = graph.get_object('me/accounts')
page_access_token = None
for page in resp['data']:
if page['id'] == cfg['page_id']:
page_access_token = page['access_token']
graph = fb.GraphAPI(page_access_token)
return graph
And this does indeed post a message to my page.
However, if I instead want to upload an image everything goes wrong.
# Upload a profile photo for a Page.
api.put_photo(image=open("path_to/my_image.jpg",'rb').read(), message='Here's my image')
I get the dreaded GraphAPIError: (#324) Requires upload file for which non of the solutions on stackoverflow works for me.
If I instead issue the following command
api.put_photo(image=open("path_to/my_image.jpg",'rb').read(), album_path=cfg['page_id'] + "/picture")
I get GraphAPIError: (#1) Could not fetch picture for which I haven't been able to find a solution either.
Could someone out there please point me in the right direction of provide me with a currently working example? It would be greatly appreciated, thanks !

A 324 Facebook error can result from a few things depending on how the photo upload call was made
a missing image
an image not recognised by Facebook
incorrect directory path reference
A raw cURL call looks like
curl -F 'source=#my_image.jpg' 'https://graph.facebook.com/me/photos?access_token=YOUR_TOKEN'
As long as the above calls works, you can be sure the photo agrees with Facebook servers.
An example of how a 324 error can occur
touch meow.jpg
curl -F 'source=#meow.jpg' 'https://graph.facebook.com/me/photos?access_token=YOUR_TOKEN'
This can also occur for corrupted image files as you have seen.
Using .read() will dump the actual data
Empty File
>>> image=open("meow.jpg",'rb').read()
>>> image
''
Image File
>>> image=open("how.png",'rb').read()
>>> image
'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00...
Both of these will not work with the call api.put_photo as you have seen and Klaus D. mentioned the call should be without read()
So this call
api.put_photo(image=open("path_to/my_image.jpg",'rb').read(), message='Here's my image')
actually becomes
api.put_photo('\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00...', message='Here's my image')
Which is just a string, which isn't what is wanted.
One needs the image reference <open file 'how.png', mode 'rb' at 0x1085b2390>

I know this is old and doesn't answer the question with the specified API, however, I came upon this via a search and hopefully my solution will help travelers on a similar path.
Using requests and tempfile
A quick example of how I do it using the tempfile and requests modules.
Download an image and upload to Facebook
The script below should grab an image from a given url, save it to a file within a temporary directory and automatically cleanup after finished.
In addition, I can confirm this works running on a Flask service on Google Cloud Run. That comes with the container runtime contract so that we can store the file in-memory.
import tempfile
import requests
# setup stuff - certainly change this
filename = "your-desired-filename"
filepath = f"{directory}/{filename}"
image_url = "your-image-url"
act_id = "your account id"
access_token = "your access token"
# create the temporary directory
temp_dir = tempfile.TemporaryDirectory()
directory = temp_dir.name
# stream the image bytes
res = requests.get(image_url, stream=True)
# write them to your filename at your temporary directory
# assuming this works
# add logic for non 200 status codes
with open(filepath, "wb+") as f:
f.write(res.content)
# prep the payload for the facebook call
files = {
"filename": open(filepath, "rb"),
}
url = f"https://graph.facebook.com/v10.0/{act_id}/adimages?access_token={access_token}"
# send the POST request
res = requests.post(url, files=files)
res.raise_for_status()
if res.status_code == 200:
# get your image data back
image_upload_data = res.json()
temp_dir.cleanup()
if "images" in image_upload_data:
return image_upload_data["images"][filepath.split("/")[-1]]
return image_upload_data
temp_dir.cleanup() # paranoid: just in case an error isn't raised