多模块全局变量不会清空

如py1是库文件:

# encoding:gbk
g_a = 1
def add():
    global g_a
    g_a += 1

py2引用py1:

# encoding:gbk
import PY1 as py1
def init(ContextInfo):
    pass
def handlebar(ContextInfo):
    py1.add()
    print(py1.g_a)

回测一遍后再回测,库文件的g_a变量没有重置,会一直递增