Create variable string for request API payload - python-3.x

Question

I have a list of URLs that all refer to images. I want to loop through the list and call a face recognition API that accepts these URLs. To call the API, I need to provide the payload dictionary. However, the example code from the API requires the following form for the payload dictionary:
payload = "{\"url\":\"https://inferdo.com/img/face-3.jpg\",\"accuracy_boost\":3}"
The URL in this example payload dictionary would look like this in my list:
list_of_urls = ["https://inferdo.com/img/face-3.jpg", ...]
How can I insert the entries of my list into the payload dictionary with a for loop?
I tried to use a "regular" payload dictionary, but it did not work:
for url_path in list_of_urls:
payload = {'url' : url_path,'accuracy_boost':3}

Answer 1

I went to the API documentation and found you need to send the payload as JSON. Something like this will do the job:
import requests
import json
endpoints = {
'face': 'https://face-detection6.p.rapidapi.com/img/face'
'face_age_gender': 'https://face-detection6.p.rapidapi.com/img/face-age-gender'
}
urls = [
'https://inferdo.com/img/face-3.jpg'
]
headers = {
'x-rapidapi-host': 'face-detection6.p.rapidapi.com',
'x-rapidapi-key': 'YOUR-API-KEY',
'content-type': 'application/json',
'accept': 'application/json'
}
for url in urls:
payload = {
'url': url,
'accuracy_boost': 3
}
r = requests.post(
endpoints.get('face'), # or endpoint.get('face_age_gender')
data=json.dumps(payload),
headers=headers
)
if r.ok:
# do something with r.content or r.json()
I hope it helps.