安装不了xlrd怎么办
C:\Users\piaop>pip install xlrd
Traceback (most recent call last):
File "d:\python\lib\runpy.py", line 194, in _run_module_as_main
return _run_code(code, main_globals, None,
File "d:\python\lib\runpy.py", line 87, in _run_code
exec(code, run_globals)
File "D:\Python\Scripts\pip.exe\__main__.py", line 4, in <module>
ModuleNotFoundError: No module named 'pip'