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技术 2022年11月17日
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1。split个人最喜欢的就是它能使输入的一连串数字变为list.

str=raw_input("some ")str2=str.split(" ")str3=str.split(" ",1)print str2,str3a=[int(x) for x in str2]print a,type(a)

截图: <img 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" alt="">

我的输入是 1 23 45 67,str2 按照空格切割成list,str3按空格切割且最大切割长度为1(即切割一次),a将str2这个list中的元素变为整形。

2。至于join,

str1=" ".join(str)print str1

join是以什么来连接str,我这是以空格来连接,所以它会将所有的字符都以空格连接起来。

结果截图:<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAPgAAAAWCAYAAADtn1H5AAAABHNCSVQICAgIfAhkiAAACYFJREFUeF7tnHtU1VUWxz+/+1ZA7CICIvLwwSvzFYGRj/JRajpqipapmZPVKiubxjXmqKNZkytTsyxnTY9xXIotzWWOY75QKct8A6agAipvuFCiKO9750A+kO4Q93cvchf+zj93/c79nf3b+7vP3mefvc/vJ3344YeW6OhoatqQERNrf5WmIKAg0DIQULUMMRQpFAQUBKwhoLHWebNP5UrwI0MZ3COIrp39aGeAjNhFzNtdRHWDA+/EnxIG73AeHtSXB+8LxM/TBY3lKlkJ37J+7S6SLpltZkLr+xBTYqIID/ShvWsNNKXknfyBDWu3c7SwymZ6TTpAakW3cbOYP8yL8uOf8PJHKYJb25rKGM3CpTEE1h9WFMebb24lo7L+H81wrXKhS//hPDGkF2E+LqirhU6S97Fq1U7Ol9vCj57wFxcxJ0JMYivNkraB1/5+kCLbp40Vas7T1bCB6wMYPuJ+fE3nSb/YjnbBZtLPX3EC464BUE/XsZN4wi+DQ4f3sN9UgUvQA4zuP4w33Ep4Y8kBCmzyQmqM3briVZnJ4V1HMV2uQNehB48PHcRrr1xj9sI95NhErymVrMIYOZFXB3vWPiT/dAEVMh6n8+6KDyUc3riFIz/fmtnVl8+T4wzGrTES/dwsXoyQSPlWOO5dV5DcPAnwLqfKVkOUzJj2x7LquPo2pFzDRjC1n474zQnUgUAGms45pGEDLzvNB6+/idmipfOk+TzQrZDTJmfQvABTKCxr87u8mF9MpeU6uAd+4kqnhUwP7I6vXhj4NVtAryZ/3xe8s6/umBPke7/N6+Fdaa8TBm7rEmnL4xt9r4TefwivTnAj/ptMRo4yknqxRIbTVePRpSOGigvExx8h0SasGs2sHTeq6TDkWWb0KeHrd1ayKbWUG2qWRdRSSUFyAgV1BkuGQJ4e50F54r/ZdMZO+rKYavpBDe/BLWZh3IIJEar7d24DhalkXbULZsdJZKngl7w6xl1DWZLQ1DjokiJKHBFRq13wukcQLLpIkZP4NZV7OM+8HI0pNpZEdyOSJZ/TBTKYkwz4BntAwVlyK7VoNZLjdOMASpJrKDEj/TBtW8sWe43bKj8aOgwaz6PGTDZtSEDGjs4qVWfrbHgFv8GtzpMwb6hIScfZtqJ1AdV26MsQP8j7z/dckBOzCmKSWodeq0bv7kvvx8Yxwa+IfSu+JdsRDsNe7Wu9GPrCU3Q9/jnzj1UTPcINTD+QXSrD6WraEeoj/HvbMSz7x9hazspyE/nq81h2pDX3aibR5t6B9DRks7UgjOcXziTKr7WYgEUk7fiS1VvPcNnWEL0e9mqPPkwd5UvhnhXsy3eavZe9M+Q34xtl4BpjIAEiN5GXXIBNeY3fPK7pOlRtQnl65qN4XdjOgu05yFjTBHMiETPjLf4Sof+V0V8S+WLBOvZmltsXHjpCbJFUC4t5jjGaOBZvSuWaLoSw9lD+kzynK+lbUXEyjvXnMsi9Iuw8KIIxI3swaVYVObPXipBdhtNwhJy1NAwERASgwcyj4+/lh20beDcHAobEMHHUNKakLWTVSTuckORC93GjCatMYPm2C5Q5jG/nI9QIA5do1aEL7UUyJt5pEmy3A6l2D+WpP89gQGkcS5bt5kK53MlZRea21by930DbTj0YNS6KSU+e49T735HXrE5ejWf0ZF6JzGPNgn1kCu+l8QrCX/ih/JR8WU7XUpJC7Bcpt4BMPEWaeg7vDA/hAV8tiedkhkCOmOMiuRbcUSso5bFz2cdszvyVl+TCtkT3HEvnYCPqk9nIDaoMQUN5JtLA2bVbSbgid644QtCmp9EIA9fQPtgbldjrJcvZ6zWxDBrPPsyYPZnepm289VEcaXatPNUUZ6ZTXMNz8hnSJX/ejxnAg94H2dyMMbrWbyizJnfkxOrlJJRqMRgk3Dp1wZOrfJdbhU6roqzSzphVmEtxjljKRRRTm3dpzqZri78RLGf3sDerrqOx1EZSlaXy4rNakdReDJ4ykHb5u1h+wBnKvU0L9O8b+M0E249k2WU8jhZEonXgI7zyp5F0OBXLXz89RJ4derfGncjZiWamoqo5Z7wWn6hIOmnd6TTzb/Srx2j/NxbT+/uVvPpZmqyV/BY5Pb41Mb85h+RmrpRIGgOtRW6zMC2HujldvY8oY3KNY+nFMldvFR5RY0VpVTjG9/c6R53f2sRzYN/vG7iu/a8JtmR5ez0H8lqHlIp7eo5m9kvRWHavZt5XKRTLDqEl1CKpZq6sum2fLbl0YdhgHxED7yCxSDZxB4hfTdGBNSxOqlO/VYlQdfpkHpYO8slnR8jOybCpDq5Sq7BUm+vIKw4NBQxgUt/WXD20h6TLzenQxMpdVc41Abm3m4GbZR61kchh4eiLfyTOthMuN3UguYYQMyEETq1jY7Ide3gHaPVOkfg/Bq6mbbfuhIoSUU1ZJlQk2MqqvOkd2ZrKkgwST5soa7Y5UOOFp7BoRi/0Z+JYl+FC2P19ruNl5lp2CklZtihPJNaem8vzxjQOnrxI7s9laD0CuX9AJCFu2Xz97n6y5G72HKJFM1dzz5OSW4dYqxCGuQqdJJ3g2Ok0G5NEOrpNncPz7c5y6FQOeVfMuPuFM3BQKJ658SxZn0JJs+n2uoxlWRxONdMjegJTMv/LkcJWdH7oMcYEXxYVje2ck5UV0xE0fDzRrrlsjD3eIg+1WJtu1g1c40H/qdOIEQvYzRYxmhcioCrpn7x0ymSN1p3pk1wJG9QL95qnBQ9ievDtj039fF6tgTe6iTi8ND2FbJ8QBo7shaFmySj7mdSkHXywJY6jeRXNn0GvJ4zGIwg/nQgukk02rdy1ZCQ1lksFVN7Xh8dDomq7Ki5lkrDtXyzdnkB283nuW1KaL/H9p2vw++MYBj/5LAOElIWpCaxfspWdZ0rEpsn2pvHux7THjPyydyW7RN7ibmmS8jbZ3aJqRc67EYGGT7LdjYgoMisItCAEFANvQcpURFEQqI+AYuD1EVGuFQRaEAKKgbcgZSqiKAjUR0Ax8PqIKNcKAi0IAcXAW5AyFVEUBOojYL0OXnuXGu9hs1k6XrwnWtsqSVg5j6UJDdWYr48Ze4nlr63mmAPeHZdcezJnxTRcv3SWT0Vdh6MRP1r/P/Degr6cfW8BHyff6ffwxOk0/yhG9LRwZMchMmS/gNMIQW/c0shPfDnTp6JUbXsyc/E0OsUvY+6mi3fsAJfkch+zV0zHuHkxc78xyTx6e0s31uTQdBzO/wCnIjm5iODXCwAAAABJRU5ErkJggg==" alt="">

OK,结束。个人写这篇也是为了以后可能翻一翻。

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