ほぼpython3標準のみでCustomVision APIを叩くためのたたき台（multipart/form-dataは諦めろ）

customvision-projects-image-count.py

'''
# Usage:
export TRAINING_KEY=XXXXXXXXXXX
python customvision-projects-image-count.py

# API Docs: 
CustomVision Training API: https://southcentralus.dev.cognitive.microsoft.com/docs/services/Custom_Vision_Training_3.0/
CustomVision Prediction API: https://southcentralus.dev.cognitive.microsoft.com/docs/services/Custom_Vision_Prediction_3.0/
'''

import os;
import json
from urllib.request import Request,urlopen

TRAINING_KEY = os.environ.get('TRAINING_KEY')
TRAINING_ENDPOINT='https://japaneast.api.cognitive.microsoft.com/customvision/v3.0/training/'

def request_simple(url, data=None, headers={}, method=None):
    if method is None:
        method =  'GET' if data is None else 'POST'
    req = Request(url, data=data, headers=headers, method=method)
    with urlopen(req) as f:
        return json.load(f.fp)

DEFAULT_HEADERS={
    'Training-Key': TRAINING_KEY,
    'Content-Type': 'application/json'
}

projects = request_simple(f'{TRAINING_ENDPOINT}/projects', headers=DEFAULT_HEADERS)

for project in projects:
    tagged_count = request_simple(f'{TRAINING_ENDPOINT}/projects/{project["id"]}/images/tagged/count', headers=DEFAULT_HEADERS)
    untagged_count = request_simple(f'{TRAINING_ENDPOINT}/projects/{project["id"]}/images/untagged/count', headers=DEFAULT_HEADERS)
    print(f'{project["name"]}: {tagged_count + untagged_count} ({tagged_count}+{untagged_count})')