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altcoin_subclass(): use importlib

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The MMGen Project 2019-10-19 10:10:28 +00:00
commit 9b456b0820
Signed by: mmgen
GPG key ID: 3F8B1861E32B7DA2
1 changed files with 4 additions and 6 deletions
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10
mmgen/util.py
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@ -920,13 +920,11 @@ def altcoin_subclass(cls,mod_id,cls_name):
mod_dir = g.proto.base_coin.lower()
pname = g.proto.class_pfx if hasattr(g.proto,'class_pfx') else capfirst(g.proto.name)
tname = 'Token' if g.token else ''
e1 = 'from mmgen.altcoins.{}.{} import {}{}{}'.format(mod_dir,mod_id,pname,tname,cls_name)
e2 = 'alt_cls = {}{}{}'.format(pname,tname,cls_name)
gl = globals()
import importlib
modname = 'mmgen.altcoins.{}.{}'.format(mod_dir,mod_id)
clsname = '{}{}{}'.format(pname,tname,cls_name)
try:
exec(e1,gl,gl)
exec(e2,gl,gl)
return alt_cls
return getattr(importlib.import_module(modname),clsname)
except ImportError:
return cls