# encoding: UTF-8
'''
动态载入所有的策略类
'''
import os
import importlib
import traceback
# 用来保存策略类的字典
STRATEGY_CLASS = {}
#----------------------------------------------------------------------
def loadStrategyModule(moduleName):
"""使用importlib动态载入模块"""
try:
module = importlib.import_module(moduleName)
# 遍历模块下的对象，只有名称中包含'Strategy'的才是策略类
for k in dir(module):
if 'Strategy' in k:
v = module.__getattribute__(k)
STRATEGY_CLASS[k] = v
except:
print ('-' * 20)
print ('Failed to import strategy file %s:' %moduleName)
traceback.print_exc()
# 遍历strategy目录下的文件
path = os.path.abspath(os.path.dirname(__file__))
for root, subdirs, files in os.walk(path):
for name in files:
# 只有文件名中包含strategy且非.pyc的文件，才是策略文件
if 'strategy' in name and '.pyc' not in name:
# 模块名称需要模块路径前缀
moduleName = 'strategy.' + name.replace('.py', '')
loadStrategyModule(moduleName)
# print(STRATEGY_CLASS)
