vim的隐藏用法2

syntax match pyOperator "<=" conceal cchar=≤
syntax match pyOperator ">=" conceal cchar=≥
syntax match pyOperator "!=" conceal cchar=?

syntax match pyOperator " / " conceal cchar=÷
syntax match pyOperator " \* " conceal cchar=×
syntax match pyOperator "\<\%(math\.\)\?sqrt\>" conceal cchar=√
syntax match pyOperator "\<\%(math\.\)\?prod\>" conceal cchar=∏
syntax match pyOperator "\( \|\)\*\*\( \|\)2\>" conceal cchar=2
syntax match pyOperator "\( \|\)\*\*\( \|\)3\>" conceal cchar=3
syntax match pyKeyword "\<\%(math\.\)\?pi\>" conceal cchar=π

syntax keyword pyOperator product conceal cchar=∏
syntax keyword pyOperator sum conceal cchar=∑
syntax keyword pyStatement lambda conceal cchar=λ
hi link pyOperator Operator
hi link pyStatement Statement
hi link pyKeyword Keyword
hi! link Conceal Operator
setlocal conceallevel=1