yolo5 中将xml文件转为txt文件

初入python，代码如下，有问题欢迎指出

# 开发时间：2022/2/28 8:45
import xml.dom.minidom as xmldom
import os
"""
 yolo5 将xml格式的文件转化为txt文件格式
"""
# 类型
classes = [ dljss, kcs, lmpss]


def data2txt(d1,d2,d3,d4,clsName,txtFile_name):
    fd=open(txtFile_name,a)
    index=classes.index(clsName)
    fd.write(str(index)+" "+ str(d1)+ " " +str(d2)+" "+str(d3)+" "+str(d4)+"
")
    fd.close()

# 读取xml文件数据
def xml2data(xmlfile_name,txtFile_name):
    ele = xmldom.parse(os.path.abspath(xmlfile_name)).documentElement

    size = ele.getElementsByTagName("size")
    if len(size) != 0:
        image_width = int(size[0].getElementsByTagName("width")[0].firstChild.data)
        image_height = int(size[0].getElementsByTagName("height")[0].firstChild.data)


    objList = ele.getElementsByTagName("object")
    for obj in objList:
       index=objList.index(obj)
       clsName=objList[index].getElementsByTagName("name")[0].firstChild.data
       bndbox=objList[index].getElementsByTagName("bndbox")
       xmin=int(bndbox[0].getElementsByTagName("xmin")[0].firstChild.data)
       ymin = int(bndbox[0].getElementsByTagName("ymin")[0].firstChild.data)
       xmax = int(bndbox[0].getElementsByTagName("xmax")[0].firstChild.data)
       ymax = int(bndbox[0].getElementsByTagName("ymax")[0].firstChild.data)

       xcenter = (xmax + xmin) / 2
       ycenter = (ymax + ymin) / 2
       width = abs(xmax - xmin)
       height = abs(ymax - ymin)

       data2txt(xcenter/image_width, ycenter/image_height, width/image_width, height / image_height,clsName,
                txtFile_name)

def readFile(filePath):
    xmlDir=filePath + "\" + xml
    if(False == os.path.exists(xmlDir)):
        return None
    txtDir=filePath+"\"+txt
    if(False == os.path.exists(txtDir)):
        os.mkdir(txtDir)
    for fileName in os.listdir(xmlDir):
        xml2data(xmlDir+\+fileName,txtDir+\+fileName[:-4]+".txt")

if __name__ == __main__:
    readFile("G:\")