报错提示<main.oscheck instance at 0x7f54694ae560>

代码：

import os

class oscheck:
   '操作系统检查'
   cmdoutput = 0

   def __init__(self, oscmd, outfile):
      self.oscmd = oscmd
      self.output = outfile
      print('self.oscmd:' + oscmd)
      print('self.output:' + self.output)


   def runcmd(self):
        cmdResault = os.popen(self.oscmd)
        oscheck.cmdoutput = cmdResault.read()
        print('cmdoutput' + oscheck.cmdoutput)

   def printoutfile(self):
        global cmdoutput
        with open(self.output, 'w') as file:
            file.write(str(cmdoutput))
            print ('日志文件更新内容 : ' + cmdoutput.read())


op1 = oscheck('ls /tmp','/tmp/op1.log')
print(op1)
op2 = oscheck('df -h','/tmp/op2.log')
print(op2)
op1.runcmd
op1.printoutfile
op2.runcmd
op2.printoutfile

执行结果：

[test@test_2025 backup]$ python znsql_tool.py
self.oscmd:ls /tmp
self.output:/tmp/op1.log
<__main__.oscheck instance at 0x7f29ddd91560>
self.oscmd:df -h
self.output:/tmp/op2.log
<__main__.oscheck instance at 0x7f29ddd915a8>

麻烦帮忙指导下，感谢感谢。