pip list | grep -E 'django|nodestore'
django-crispy-forms                1.14.0
django_csp                         3.8
django-multidb-router              0.10
django-pg-zero-downtime-migrations 0.13
djangorestframework                3.15.2
sentry-nodestore-elastic           1.0.1
sentry-s3-nodestore                1.0.3

import os
import ssl
import certifi
import re
from cryptography import x509
from cryptography.hazmat.backends import default_backend

def list_certificates():
    # Get the path to the cacert.pem file
    cacert_path = certifi.where()

    # Open the file containing the certificates
    with open(cacert_path, 'r') as f:
        pem_data = f.read()

    # Use a regular expression to extract certificates
    certificate_pattern = re.compile(r'-----BEGIN CERTIFICATE-----.+?-----END CERTIFICATE-----', re.DOTALL)
    certificates = certificate_pattern.findall(pem_data)

    # Display information about each certificate
    for i, cert_pem in enumerate(certificates):
        try:
            # Load and parse the certificate
            cert = x509.load_pem_x509_certificate(cert_pem.encode(), default_backend())
            subject = cert.subject
            issuer = cert.issuer
            not_valid_before = cert.not_valid_before
            not_valid_after = cert.not_valid_after

            # Print certificate information
            print(f"Certificate #{i + 1}:")
            print(f"  Subject: {subject}")
            print(f"  Issuer: {issuer}")
            print(f"  Valid from: {not_valid_before}")
            print(f"  Valid until: {not_valid_after}")
            print()
        except Exception as e:
            # Print error message if there's an issue with the certificate
            print(f"Error processing certificate #{i + 1}: {e}")

# Example usage
list_certificates()