The following is my .vimrc configuration:

call plug#begin()

" color scheme
Plug 'morhetz/gruvbox'
Plug 'prabirshrestha/vim-lsp'
Plug 'mattn/vim-lsp-settings'

call plug#end()

if executable('pylsp')
    " pip install python-lsp-server
    au User lsp_setup call lsp#register_server({
         'name': 'pylsp',
         'cmd': {server_info->['pylsp']},
         'allowlist': ['python'],
         })
endif

When I write Python code, I encounter the E501 error because my line is too long. I found a key pylsp.plugins.pycodestyle.maxLineLength in the python-lsp-server documentation that seems to fix the error. However, I don’t know where to configure this key. I hope the .vimrc file can hold all the configurations to reduce the number of configuration files.

1. fix the E501 error.
2. know how to configure lsp in .vimrc file.