按一定条件提取xml 数据

import xml.dom.minidom as xx
import os,xlwt,datetime
# path=os.path.abspath('.')
# data_path=os.path.join(path,'GL.xml')
dom = xx.parse('GL.xml')
root = dom.documentElement
list_ye = root.getElementsByTagName("科目余额及发生额")
kmbm_len = 14
# bb= list_ye[]
for m in list_ye:
    kjqjh_ye = m.getElementsByTagName('会计期间号')[0]
    kjqjh_ye_z = kjqjh_ye.childNodes[0].data
    kmbm_ye = m.getElementsByTagName('科目编号')[0]
    kmbm_ye_z = kmbm_ye.childNodes[0].data
    fx_ye = m.getElementsByTagName('期初余额方向')[0]
    fx_ye_z = fx_ye.childNodes[0].data
    qc_ye = m.getElementsByTagName('期初本币余额')[0]
    qc_ye_z = qc_ye.childNodes[0].data
    if  kjqjh_ye_z == '1' :
        print(kjqjh_ye_z)
        print(kmbm_ye_z)
        print(fx_ye_z)
        print(qc_ye_z)   
    else:
        continue