Kali Linux上的奇怪导入问题，pyperclip

Question

我正在尝试运行shellpop，但一直出现导入错误。我已经尝试过无数次从互联网上修复，但事情总是不太对劲。这是我的密码：

henry@kali:~$ shellpop
Traceback (most recent call last):
  File "/usr/local/bin/shellpop", line 18, in <module>
    import pyperclip
ImportError: No module named pyperclip
henry@kali:~$ python3.9
Python 3.9.1+ (default, Feb  5 2021, 13:46:56) 
[GCC 10.2.1 20210110] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyperclip
>>> pyperclip.copy("hi")
>>> pyperclip.paste()
'hi'
>>> exit()
henry@kali:~$ shellpop --help
Traceback (most recent call last):
  File "/usr/local/bin/shellpop", line 18, in <module>
    import pyperclip
ImportError: No module named pyperclip
henry@kali:~$