安装selenium输入：pip install selenium后报如下错误：
Traceback (most recent call last):
File “{安装路径}\python35\lib\runpy.py”, line 184, in _run_module_as_main
"main", mod_spec)
File “{安装路径}\python35\lib\runpy.py”, line 85, in run_code
exec(code, run_globals)
File "{安装路径}\Python35\Scripts\pip.exe_main.py", line 5, in
File “{安装路径}\python35\lib\site-packages\pip_internal\cli\main.py”, line 57
sys.stderr.write(f"ERROR: {exc}")
^
SyntaxError: invalid syntax