Add function to IpregistryConfig to simplify usage of eu base URL

Author: laurentpellegrino

README.md

@@ -114,6 +114,18 @@ from ipregistry import IpregistryClient, NoCache
 client = IpregistryClient("YOUR_API_KEY", cache=NoCache())
 ```
 
+### European Union Base URL
+
+With the ever-increasing concerns about data privacy and security, we recognize the importance of providing our European users with a dedicated API base URL:
+
+```python
+from ipregistry import IpregistryClient, NoCache
+
+client = IpregistryClient(IpregistryConfig("YOUR_API_KEY").with_eu_base_url())
+```
+
+Using this base URL your requests are handled by the closest cluster of nodes in the European Union.
+
 ### Errors
 
 All Ipregistry exceptions inherit `IpregistryError` class.

ipregistry/core.py

@@ -169,6 +169,10 @@ def __init__(self, key, base_url="https://api.ipregistry.co", timeout=5):
         self.base_url = base_url
         self.timeout = timeout
 
+    def with_eu_base_url(self):
+        self.base_url = 'https://eu.api.ipregistry.co'
+        return self
+
     def __str__(self):
         """
         Return a string representation of the IpregistryConfig instance.

tests/test_client.py

@@ -117,6 +117,16 @@ def test_lookup_ip(self):
         self.assertIsNotNone(response.data.company.domain)
         self.assertEqual('US', response.data.location.country.code)
 
+    def test_lookup_ip_with_eu_base_url(self):
+        """
+        Test a simple IP lookup with the EU base URL
+        """
+        client = IpregistryClient(IpregistryConfig(os.getenv('IPREGISTRY_API_KEY')).with_eu_base_url())
+        response = client.lookup_ip('8.8.8.8')
+        self.assertIsNotNone(response.data.ip)
+        self.assertIsNotNone(response.data.company.domain)
+        self.assertEqual('US', response.data.location.country.code)
+
     def test_lookup_ip_invalid_input(self):
         """
         Test that an IP lookup with an invalid input fails with an ApiError