[Core] Add pygeoip dependency support

Provide support for the pure-python pygeoip as compiled GeoIP is not
always available.

Ref: https://dev.deluge-torrent.org/ticket/3271

DEPENDS.md

@@ -41,7 +41,7 @@ All modules will require the [common](#common) section dependencies.
 ## Core (deluged daemon)
 
 - [libtorrent] _>= 1.1.1_
-- [GeoIP] - Optional: IP address location lookup. (_Debian: `python-geoip`_)
+- [GeoIP] or [pygeoip] - Optional: IP address country lookup. (_Debian: `python-geoip`_)
 
 ## GTK UI
 

deluge/core/preferencesmanager.py

@@ -23,10 +23,14 @@ import deluge.configmanager
 from deluge._libtorrent import lt
 from deluge.event import ConfigValueChangedEvent
 
+GeoIP = None
 try:
-    import GeoIP
+    from GeoIP import GeoIP
 except ImportError:
-    GeoIP = None
+    try:
+        from pygeoip import GeoIP
+    except ImportError:
+        pass
 
 log = logging.getLogger(__name__)
 
@@ -456,11 +460,9 @@ class PreferencesManager(component.Component):
         # Load the GeoIP DB for country look-ups if available
         if os.path.exists(geoipdb_path):
             try:
-                self.core.geoip_instance = GeoIP.open(
+                self.core.geoip_instance = GeoIP(geoipdb_path, 0)
-                    geoipdb_path, GeoIP.GEOIP_STANDARD
+            except Exception as ex:
-                )
+                log.warning('GeoIP Unavailable: %s', ex)
-            except AttributeError:
-                log.warning('GeoIP Unavailable')
         else:
             log.warning('Unable to find GeoIP database file: %s', geoipdb_path)
 

requirements.txt

@@ -12,3 +12,4 @@ certifi; sys_platform == 'win32'
 windows-curses; sys_platform == 'win32'
 zope.interface>=4.4.2
 distro; 'linux' in sys_platform or 'bsd' in sys_platform
+pygeoip