Use __all__ in bitcoin.messages

First step in getting rid of the from foo import *'s

 [ yapified by gitreformat (github/ghtdak) on Mon Nov 30 21:11:12 2015 ]

Author: petertodd

bitcoin/messages.py

@@ -21,6 +21,8 @@
 else:
     import cStringIO as io
 
+# Bad practice, so we have a __all__ at the end; this should be cleaned up
+# later.
 from bitcoin.core import *
 from bitcoin.core.serialize import *
 from bitcoin.net import *
@@ -444,3 +446,25 @@ def __repr__(self):
 messagemap = {}
 for cls in msg_classes:
     messagemap[cls.command] = cls
+
+__all__ = ('MSG_TX',
+           'MSG_BLOCK',
+           'MSG_FILTERED_BLOCK',
+           'MsgSerializable',
+           'msg_version',
+           'msg_verack',
+           'msg_addr',
+           'msg_alert',
+           'msg_inv',
+           'msg_getdata',
+           'msg_getblocks',
+           'msg_getheaders',
+           'msg_headers',
+           'msg_tx',
+           'msg_block',
+           'msg_getaddr',
+           'msg_ping',
+           'msg_pong',
+           'msg_mempool',
+           'msg_classes',
+           'messagemap',)