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Replicate a Postman POST-Request (metadata and fileupload) within python

I am trying to issue a POST request including local-file upload with python.
I looked up a lot of similar requests here, but none worked for me or none was specific enough to help me out.
With Postman everything works as expected and without any hickups.
But representing the very same with python I am not able to achieve it.
I tried various combinations of params-, body- and file-dictionaries, without success
This is how the working postman request body looks like:
This is how the params of this postman request have been configured:
This is my python code
metadata = {
"name":"MyFile" ,
"type":"myFileType" ,
"parentId":"1cc58622-3bc0-4fc4-a222-a64bd8d90af1"
}
fileForUpload = {'upload_file': open("/home/myuser/blablabla/testfile.jpg)", "rb")}
params = {"metadata":json.dumps(metadata), "file": "filename"}
headers = {
"content-type": "application/json",
"Authorization": 'Bearer ' + token,
"accept-encoding": "gzip, deflate"
}
response = requests.post(url, headers = headers, params = params, files = fileForUpload)
I receive an error message of the API-endpoint, claiming that the file parameter is missing ...
Any idea what I am doing wrong?

How to convert a python post request to a Postman POST request

I have a python post request to a server where my flask app is hosted. It works fine and I am able to get the desired data.
But I want to test the API using POSTMAN. I am unable to do that because I am unfamiliar with POSTMAN to some extent.
Below is the python code that I have.
import requests
import ast
import json
resp1 = {}
url = 'http://myflaskapiurl:port/route'
files = {'file': open(r'file that should be uploaded to the server', 'rb')}
r = requests.post(url, files=files, data={"flag":2})
headers = {
'content-type': "multipart/form-data",
'Content-Type': "application/x-www-form-urlencoded",
'cache-control': "no-cache",
}
resp1 = ast.literal_eval(r.text)
print(resp1)
I am struggling with the question whether the data and file that I am trying to post to the server should be in raw json or form-data or x-www-form-urlencoded section of body. Also what should be the actual structure.
Because every time I POST this data using form-data or x-www-form-urlencoded section of body I get the error saying
werkzeug.exceptions.BadRequestKeyError
werkzeug.exceptions.HTTPException.wrap..newcls: 400 Bad Request: KeyError: 'file'

This is how it should look like:
The "params" tab should be empty, maybe you're adding a second file parameter there?

Python HTTP Post with upload file and headers generated from Postman

I'm using Python 2.7.
I want to make a HTTP POST using requests, where I upload a file and a key that must go in the HTTP Headers.
For that I've used the application Postman, where it works really fine.
On Postman I've added only the necessary header, which is a Authorization with some key.
On the body, Ive choosen form-data and then the key is an input_image, and they the image itself.
Now I want to replicate this into Python2.7, so I've chose to see the Python code on Postman, which was this one:
import requests
url = "https://foo.com/bar/stuff"
payload = "------WebKitFormBoundary7MA4YDxkTrZu1gW\r\nContent-Disposition: form-data; name=\"input_image\"; filename=\"C:\\Test\\projs\\Supermarket\\doritos.jpeg\"\r\nContent-Type: image/jpeg\r\n\r\n\r\n------WebKitFormBoundary7MA4YDxkTrZu1gW--"
headers = {
'content-type': "multipart/form-data; boundary=----WebKitFormBoundary7MA4YDxkTrZu1gW",
'Authorization': "myAuthorizationKey",
'Cache-Control': "no-cache",
'Postman-Token': "0efwd6e8-051c-4ed5-8d6f-7b1bd135f4d5"
}
response = requests.request("POST", url, data=payload, headers=headers)
print(response.text)
This simply doesn't work. It has the same behaviour as if I didn't send any image using Postman. It looks like the payload string is not being send correctly.
Question:
What is wrong with this Postman auto-generation code in order to send a HTTP POST with image upload and with header at the same time in Python?

I think Postman is doing some logic we are not really aware of. But the package requests provide a way to upload images.
files = {'media': open('my_image.jpg', 'rb')}
r = requests.post(url, files=files, headers=hearders)
According to the server you are sending the image to, the parameters name, this code might need to be slightly changed.

the only trick works here is your code should be same as you post request in postman, no extra headers need to be added , your post request should look like the same as it is in postman.
I could do this by changing my file to an image file and then posting it in my post request.
with open('grass-small.png', 'rb') as imageFile:
imageStr = base64.urlsafe_b64encode(imageFile.read())
files = {'document': ('grass-small.png', imageStr ), 'document_type':(None,'grass')}

This worked for me
import requests
url = 'http://iizuka.cs.tsukuba.ac.jp/projects/colorization/web/'
files = {'file': ("my_img_path/myImage.jpeg", open('my_img_path/myImage.jpeg', 'rb'),'image/jpg')}
r = requests.post(url, files=files)

Python mulitpart/formdata POST request within Zapier Code

I'm currently working with Zapier to automate some tasks but I got stuck on the following :
I'm trying to send a POST request using the Zapier Webhooks containing a file. I could make it work trough postman as the API of Debitoor (that's where I am sending to) is pretty clear.
However, I can not make it work within Zapier Webhooks. I also tried to use Zapier Code (Python) as I can view the python code from the postman. But I am not familiar with that and might need some help to get it started.
1.) First of all, this is the API reference: https://developers.debitoor.com/api-reference#files
2.) I then used Postman with this code (Python requests)which was working :
import requests
url = "https://api.debitoor.com/api/files/v1"
querystring = {"token":"eyJ1c2VyIjoiNWE0NmVjYjUxOTE0ODEwMDFjMTkxYzZmIiwiYXBwIjoiNTdiMmZlMDkxZTkwMjQwZjAwNDZhNWEyIiwiY2hhbGxlbmdlIjowLCIkZSI6MCwiJHQiOjE1MjE4NzAwNTQ1OTd9CsKRw5xbw5_DhHUWw5QJw4zDj8KnXsOaeMKA","fileName":"test.pdf"}
payload = "------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name=\"file\"; filename=\"Bildschirmfoto 2018-04-05 um 09.59.46 1.png\"\r\nContent-Type: image/png\r\n\r\n\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW--"
headers = {
'content-type': "multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW",
'cache-control': "no-cache",
'postman-token': "716e7723-2dc1-6384-059d-960feb563443"
}
response = requests.request("POST", url, data=payload, headers=headers, params=querystring)
print(response.text)
3.) Tried to copy the code to Zapier Code, but I don't know how to implement the file. In Zapier I am triggering an inbound email to grab the attachment, which is then "hydrated". It looks like this :
hydrate|||.eJwtjMsOwiAUBf_lrosKNFDZu3Xh1hjC46KklTaFxDRN_11qXJ7JzFkhplxMcqijB8U5l7yT5wZCxMHrZN4Iqo4BMzTgXuh63eMCioruLKiobEwFU9FlmXb1WrX-Y-ZnBrX-Qj2NsSpzBfcV_o-3C2GUisPkwx7sj5D5UQpDmeMnwqW1pPWBE-OYJdYwdCJQT9sWtse2fQEK1Tjl:1eqY0S:s2Ek27XO54PVSm9q_mVMDN8o1uY|||hydrate
How do I connect the Python code to the hydrated file? I have no experience with files and could not find any useful help. Hope someone has an idea?

I was trying to import AWS S3 files to my API.
It turns out that Zapier hydrated my file just as described here.
Then I successfully extracted the content of my file and sent it to my API like this:
import urllib.request
auth_token = input_data['auth_token'] # Authentication token for my API
csv_file = input_data['csv_file'] # The "hydrate|||..." variable: that's my S3 file
file_type = 'text/csv'
fp = urllib.request.urlopen(csv_file)
file_bytes = fp.read() # Binary content of my S3 file
fp.close()
url = 'http://my.api.com/importer/resource'
headers = {
'accept': 'application/vnd.api-v1+json',
'authorization': auth_token,
'user-agent': 'Zapier'
}
files = {'csv_file': ('bulk_resources.csv', file_bytes, file_type, {'Expires': '0'})}
response = requests.post(url, headers=headers, files=files)
return response.json()

Put API Request in Python returning error

I'm fairly new to using API's, so bear with me here. I have searched for other problems like this, but haven't encountered any solutions for one that'll help my problem.
Using Postman, I'm able to make a Put request using JSON and it works fine. When I try to use the same JSON body in Python, I am getting this error:
{'code': 'E.Internal', 'error': 'An internal error has occurred processing your request. Please notify Customer Support for assistance.', 'status': 'error'}
The company's customer support is not too helpful so I wanted to see if someone here could help me instead.
Here is my script:
url = 'https://website.com/rest/site/' + record_id
json_body = (JSON body here, same one that works in Postman)
head = {'Accept':'application/json', 'Content-Type': 'application/json'}
response = requests.put(url, auth=(username, password), json=json_body, headers=head)
data = response.json()
print(data)
If I change the requests.put to requests.get and drop everything after "auth=(username, password)" it works fine and returns the json of the record, so I am able to connect to the API, just not put anything into it with Python. Again, basically the same exact thing works in Postman.
What exactly am I doing wrong and how do I put in the data?

According to the requests documentation you're not filling out the put function correctly. Try it like this?
import json
import requests
url = 'https://website.com/rest/site/' + record_id
headers = {
"Content-Type": "application/json",
'Accept':'application/json'
}
payload = json.dumps({
"data_goes_here": None
})
rv = requests.put(url, data=payload, headers=headers, verify=False)
if rv.status_code > 399:
rv.raise_for_status()
print(json.loads(rv.text))