javascript - 正則貪婪模式,怎麼搞清楚?總是一下子把後面的都給匹配上了

t=edc9624908fac06b969fc8b3454d4d75; cna=rz39DUM8tSgCAXLjRlx1SJH8; l=Ah8fI61XmUXv5/-aXUJ9Fiy3732phHMm; lzstat_uv=7058553501377199257|1774292@1774054; cookie2=fa6653f49ed68b38b469988a4f1a2ac7; _tb_token_=obU42Ba54Lp; v=0; cookie32=d2874877ef98c1c142fc1ddff656fb50; cookie31=MTA5NzY3MjEsa2lzdGVhcixqc3djQDE2My5jb20sbnVsbA%3D%3D; alimamapwag=TW96aWxsYS80LjAgKGNvbXBhdGlibGU7IE1TSUUgNy4wOyBXaW5kb3dzIE5UIDYuMjsgV09XNjQ7IFRyaWRlbnQvNy4wOyAuTkVUNC4wQzsgLk5FVDQuMEU7IC5ORVQgQ0xSIDIuMC41MDcyNzsgLk5FVCBDTFIgMy4wLjMwNzI5OyAuTkVUIENMUiAzLjUuMzA3Mjkp; login=W5iHLLyFOGW7aA%3D%3D; alimamapw=DggWRANZRTAHBVcABwAEBQRbUFZcAgVeB1oEBwAHU1AEA1INVAUAUg%3D%3D

上面這個COOKIES 用正則匹配_tb_token_=obU42Ba54Lp;這個值,
用這個運算式直接把後面一長串都給匹配上了,
然後變成這樣了_tb_token_=obU42Ba54Lp; v=0; cookie32=d2874877ef98c1c142fc1ddff656fb50; cookie31=MTA5NzY3MjEsa2lzdGVhcixqc3djQDE2My5jb20sbnVsbA%3D%3D; alimamapwag=TW96aWxsYS80LjAgKGNvbXBhdGlibGU7IE1TSUUgNy4wOyBXaW5kb3dzIE5UIDYuMjsgV09XNjQ7IFRyaWRlbnQvNy4wOyAuTkVUNC4wQzsgLk5FVDQuMEU7IC5ORVQgQ0xSIDIuMC41MDcyNzsgLk5FVCBDTFIgMy4wLjMwNzI5OyAuTkVUIENMUiAzLjUuMzA3Mjkp; login=W5iHLLyFOGW7aA%3D%3D; alimamapw=DggWRANZRTAHBVcABwAEBQRbUFZcAgVeB1oEBwAHU1AEA1INVAUAUg%3D%3D
我知道用\W可以搞定,但是我非要用.*的話應該怎麼弄?就匹配到第一個;?

回複內容：

t=edc9624908fac06b969fc8b3454d4d75; cna=rz39DUM8tSgCAXLjRlx1SJH8; l=Ah8fI61XmUXv5/-aXUJ9Fiy3732phHMm; lzstat_uv=7058553501377199257|1774292@1774054; cookie2=fa6653f49ed68b38b469988a4f1a2ac7; _tb_token_=obU42Ba54Lp; v=0; cookie32=d2874877ef98c1c142fc1ddff656fb50; cookie31=MTA5NzY3MjEsa2lzdGVhcixqc3djQDE2My5jb20sbnVsbA%3D%3D; alimamapwag=TW96aWxsYS80LjAgKGNvbXBhdGlibGU7IE1TSUUgNy4wOyBXaW5kb3dzIE5UIDYuMjsgV09XNjQ7IFRyaWRlbnQvNy4wOyAuTkVUNC4wQzsgLk5FVDQuMEU7IC5ORVQgQ0xSIDIuMC41MDcyNzsgLk5FVCBDTFIgMy4wLjMwNzI5OyAuTkVUIENMUiAzLjUuMzA3Mjkp; login=W5iHLLyFOGW7aA%3D%3D; alimamapw=DggWRANZRTAHBVcABwAEBQRbUFZcAgVeB1oEBwAHU1AEA1INVAUAUg%3D%3D

上面這個COOKIES 用正則匹配_tb_token_=obU42Ba54Lp;這個值,
用這個運算式直接把後面一長串都給匹配上了,
然後變成這樣了_tb_token_=obU42Ba54Lp; v=0; cookie32=d2874877ef98c1c142fc1ddff656fb50; cookie31=MTA5NzY3MjEsa2lzdGVhcixqc3djQDE2My5jb20sbnVsbA%3D%3D; alimamapwag=TW96aWxsYS80LjAgKGNvbXBhdGlibGU7IE1TSUUgNy4wOyBXaW5kb3dzIE5UIDYuMjsgV09XNjQ7IFRyaWRlbnQvNy4wOyAuTkVUNC4wQzsgLk5FVDQuMEU7IC5ORVQgQ0xSIDIuMC41MDcyNzsgLk5FVCBDTFIgMy4wLjMwNzI5OyAuTkVUIENMUiAzLjUuMzA3Mjkp; login=W5iHLLyFOGW7aA%3D%3D; alimamapw=DggWRANZRTAHBVcABwAEBQRbUFZcAgVeB1oEBwAHU1AEA1INVAUAUg%3D%3D
我知道用\W可以搞定,但是我非要用.*的話應該怎麼弄?就匹配到第一個;?

1.findall,search皆可，注意方法返回的值
2.pattern寫法，注意貪婪和非貪婪匹配
3.HEREDOC是不錯的選擇，字串長的時候

import restring = """t=edc9624908fac06b969fc8b3454d4d75; cna=rz39DUM8tSgCAXLjRlx1SJH8; l=Ah8fI61XmUXv5/-aXUJ9Fiy3732phHMm; lzstat_uv=7058553501377199257|1774292@1774054; cookie2=fa6653f49ed68b38b469988a4f1a2ac7; _tb_token_=obU42Ba54Lp; v=0; cookie32=d2874877ef98c1c142fc1ddff656fb50; cookie31=MTA5NzY3MjEsa2lzdGVhcixqc3djQDE2My5jb20sbnVsbA%3D%3D; alimamapwag=TW96aWxsYS80LjAgKGNvbXBhdGlibGU7IE1TSUUgNy4wOyBXaW5kb3dzIE5UIDYuMjsgV09XNjQ7IFRyaWRlbnQvNy4wOyAuTkVUNC4wQzsgLk5FVDQuMEU7IC5ORVQgQ0xSIDIuMC41MDcyNzsgLk5FVCBDTFIgMy4wLjMwNzI5OyAuTkVUIENMUiAzLjUuMzA3Mjkp; login=W5iHLLyFOGW7aA%3D%3D; alimamapw=DggWRANZRTAHBVcABwAEBQRbUFZcAgVeB1oEBwAHU1AEA1INVAUAUg%3D%3D""";#注意匹配不到的情況,加個判斷list = re.findall("_tb_token_=(.*?);", string, re.S)print(list[0])

out=re.search("_tb_token_=(.*?);",token).groups()[0]print(out)

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