pycasbin

import casbin import os # Create dummy model and policy files for the example with open('model.conf', 'w') as f: f.write(''' [request_definition] r = sub, obj, act [policy_definition] p = sub, obj, act [policy_effect] e = some(where (p.eft == allow)) [matchers] m = r.sub == p.sub && r.obj == p.obj && r.act == p.act ''') with open('policy.csv', 'w') as f: f.write(''' p, alice, data1, read p, bob, data2, write p, data2_admin, data2, * ''') async def run_enforcer(): # Initialize an enforcer with a model file and a policy file # For real applications, use an adapter (e.g., casbin_sqlalchemy_adapter) e = casbin.Enforcer('model.conf', 'policy.csv') # Test if 'alice' can 'read' 'data1' if await e.enforce('alice', 'data1', 'read'): print("Alice CAN read data1") else: print("Alice CANNOT read data1") # Test if 'bob' can 'read' 'data2' if await e.enforce('bob', 'data2', 'read'): print("Bob CAN read data2") else: print("Bob CANNOT read data2") # Test if 'bob' can 'write' 'data2' if await e.enforce('bob', 'data2', 'write'): print("Bob CAN write data2") else: print("Bob CANNOT write data2") # Add a policy dynamically await e.add_policy('cathy', 'data3', 'read') if await e.enforce('cathy', 'data3', 'read'): print("Cathy CAN read data3 (after adding policy)") # Remove temporary files os.remove('model.conf') os.remove('policy.csv') if __name__ == '__main__': import asyncio asyncio.run(run_enforcer())