IP address lookup using MaxMind GeoLite2 database

lib/maxminddb/compat.py

@@ -0,0 +1,33 @@
+import sys
+
+import ipaddress
+
+# pylint: skip-file
+
+if sys.version_info[0] == 2:
+    def compat_ip_address(address):
+        if isinstance(address, bytes):
+            address = address.decode()
+        return ipaddress.ip_address(address)
+
+    int_from_byte = ord
+
+    FileNotFoundError = IOError
+
+    def int_from_bytes(b):
+        if b:
+            return int(b.encode("hex"), 16)
+        return 0
+
+    byte_from_int = chr
+else:
+    def compat_ip_address(address):
+        return ipaddress.ip_address(address)
+
+    int_from_byte = lambda x: x
+
+    FileNotFoundError = FileNotFoundError
+
+    int_from_bytes = lambda x: int.from_bytes(x, 'big')
+
+    byte_from_int = lambda x: bytes([x])