我在安装模块matplotlib并编写以下代码时遇到了这个问题：
import matplotlib.pyplot as plt
然后是错误：
"matplotlib.cbook.TimeoutError: LOCKERROR: matplotlib is trying to acquire the lock
'C:\\Users\\??????\\.matplotlib\\.matplotlib_lock-*'
and has failed. This maybe due to any other process holding this
lock. If you are sure no other matplotlib process is running try
removing these folders and trying again."
因此，当然，如果不能导入它就不能使用。