我在python 3.5中遇到了有线错误。感谢您的帮助。

我想使用shutil将一些图像从一个目录复制到另一个目录。据我所知，shutil是一个标准库（不需要安装）。但是它不能正常工作。如何重新安装它或解决错误？

import shutil
import os
import random

##  This program copy some images of a folder randomly into an existed directory

src = "/FirstPath/BIODI_V3_175x100/Train_set/"
dist = "/SecondPath/Random_Images_of_BIODI_for_test/"
copied = 0
mlist = os.listdir(src)
#os.mkdir(dist)
for i in range(1000):
    rand = random.randint(1,len(mlist))
    shutil.copy((os.path.join(src,mlist[rand])),dist)
    i += 1

这是错误：

Traceback (most recent call last):
  File "/home/eshan/PycharmProjects/MTL_BIODI_backup/copy.py",line 1,in <module>
    import shutil
  File "/usr/lib/python3.5/shutil.py",line 13,in <module>
    import tarfile
  File "/usr/lib/python3.5/tarfile.py",line 49,in <module>
    import copy
  File "/home/eshan/PycharmProjects/MTL_BIODI_backup/copy.py",line 15,in <module>
    shutil.copy((os.path.join(src,dist)
AttributeError: module 'shutil' has no attribute 'copy'
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport_python_hook.py",line 63,in apport_excepthook
    from apport.fileutils import likely_packaged,get_recent_crashes
  File "/usr/lib/python3/dist-packages/apport/__init__.py",line 5,in <module>
    from apport.report import Report
  File "/usr/lib/python3/dist-packages/apport/report.py",line 12,in <module>
    import subprocess,tempfile,os.path,re,pwd,grp,os,time
  File "/usr/lib/python3.5/tempfile.py",line 44,in <module>
    import shutil as _shutil
  File "/usr/lib/python3.5/shutil.py",dist)
AttributeError: module 'shutil' has no attribute 'copy'

Original exception was:
Traceback (most recent call last):
  File "/home/eshan/PycharmProjects/MTL_BIODI_backup/copy.py",dist)
AttributeError: module 'shutil' has no attribute 'copy'