py3port: use set comprehensions where applicable

mmgen/obj.py

@@ -283,7 +283,7 @@ class AddrIdxList(list,InitErrors,MMGenObject):
 		self.arg_chk(type(self),on_fail)
 		try:
 			if idx_list:
-				return list.__init__(self,sorted(set(AddrIdx(i,on_fail='raise') for i in idx_list)))
+				return list.__init__(self,sorted({AddrIdx(i,on_fail='raise') for i in idx_list}))
 			elif fmt_str:
 				ret = []
 				for i in (fmt_str.split(sep)):

mmgen/tool.py

@@ -706,7 +706,7 @@ class MMGenToolCmdRPC(MMGenToolCmdBase):
 
 		if sort:
 			sort = set(sort.split(','))
-			sort_params = set(['reverse','age'])
+			sort_params = {'reverse','age'}
 			if not sort.issubset(sort_params):
 				die(1,"The sort option takes the following parameters: '{}'".format("','".join(sort_params)))
 

mmgen/tx.py

@@ -669,7 +669,7 @@ Selected non-{pnm} inputs: {{}}""".strip().format(pnm=g.proj_name,pnl=g.proj_nam
 			'Transaction file size exceeds limit ({} bytes)'.format(g.max_tx_file_size))
 
 	def get_non_mmaddrs(self,desc):
-		return list(set(i.addr for i in getattr(self,desc) if not i.mmid))
+		return {i.addr for i in getattr(self,desc) if not i.mmid}
 
 	def sign(self,tx_num_str,keys): # return True or False; don't exit or raise exception
 
@@ -1329,7 +1329,7 @@ Selected non-{pnm} inputs: {{}}""".strip().format(pnm=g.proj_name,pnl=g.proj_nam
 			non_mmaddrs = [i for i in sel_unspent if i.twmmid.type == 'non-mmgen']
 			if non_mmaddrs and self.caller != 'txdo':
 				msg(self.msg_non_mmgen_inputs.format(
-					', '.join(set(sorted([a.addr.hl() for a in non_mmaddrs])))))
+					', '.join(sorted({a.addr.hl() for a in non_mmaddrs}))))
 				if not (opt.yes or keypress_confirm('Accept?')):
 					continue
 

mmgen/txsign.py

@@ -60,7 +60,7 @@ def get_seed_for_seed_id(sid,infiles,saved_seeds):
 
 def generate_kals_for_mmgen_addrs(need_keys,infiles,saved_seeds):
 	mmids = [e.mmid for e in need_keys]
-	sids = set(i.sid for i in mmids)
+	sids = {i.sid for i in mmids}
 	vmsg('Need seed{}: {}'.format(suf(sids,'s'),' '.join(sids)))
 	d = MMGenList()
 	from mmgen.addr import KeyAddrList