Python files and folders processing

import os,shutil
def getfilelist(filepath):
    filelist =  os.listdir(filepath)  # 获取filepath文件夹下的所有的文件
    # files = []
    for i in range(len(filelist)):
        child = os.path.join(filepath, filelist[i])
        print('child',child)
        if os.path.isdir(child):
            child_dirs = os.listdir(child)
            dstfile = child
            for i in child_dirs:
                print('i',i)
                files = os.listdir(os.path.join(child,i))
                for j in files:
                    srcfile = os.path.join(child,i,j)
                    print('j:',j)
                    shutil.move(srcfile, dstfile)
                del_dir = os.path.join(child,i)
                os.rmdir(del_dir)
filepath = "E:/python/小论文【2019.9.26-11.10】（人脸识别）/DeepID1_master/data/crop_images_DB"
getfilelist(filepath)

Purpose: all files in subdirectories into the parent directory, and then delete subdirectories

Namely: to transfer all files in subdirectories '0' in the parent directory, and then delete the '0' directory