（Python)安卓一键修改R文件的包名

有时候直接改了package，但是里面的R文件引包的package没有变化

def modify_packagename(path):
   
    # 获取所有子文件
    list1 = os.listdir(path)
    for item in list1:
       # print(item)
        cpath = path + "\\"+ item
        if os.path.isfile(cpath):
            print(cpath)
            alter(cpath, "原applicationId", "新applicationId")
        else:
            modify_packagename(cpath)

def alter(file,old_str,new_str):
  """
  替换文件中的字符串
  :param file:文件名
  :param old_str:就字符串
  :param new_str:新字符串
  :return:
  """
  file_data = ""
  with open(file, "r", encoding="utf-8") as f:
    for line in f:
      if old_str in line:
        line = line.replace(old_str,new_str)
      file_data += line
  with open(file,"w",encoding="utf-8") as f:
    f.write(file_data)
 

if __name__ == "__main__":
    #modify_name()
    path = '包名根目录'
    #modify_packagename(path)