list(range(1,5))显示结果? python 的range()函数怎么使用,为什么单独运行p...

Python Python\u8bed\u53e5list(range(1,10,3))\u6267\u884c\u7ed3\u679c\u4e3a___________________\u3002\uff08[1, 4, 7]\uff09

Python\u8bed\u53e5list(range(1,10,3))\u6267\u884c\u7ed3\u679c\u4e3a[1,4,7]\u3002
\u8bed\u6cd5\u662f:range(start,stop[,step])
\u53c2\u6570\u8bf4\u660e\uff1a
\uff081\uff09start:\u8ba1\u6570\u4ecestart\u5f00\u59cb\uff0c\u9ed8\u8ba4\u662f\u4ece0\u5f00\u59cb\u3002\u4f8b\u5982range(5)\u7b49\u4ef7\u4e8erange(0,5);
\uff082\uff09stop:\u8ba1\u6570\u5230stop\u7ed3\u675f\uff0c\u4f46\u4e0d\u5305\u62ecstop\u3002\u4f8b\u5982\uff1arange(0,5)\u662f[0,1,2,3,4]\u6ca1\u67095;
\uff083\uff09step\uff1a\u6b65\u957f\uff0c\u9ed8\u8ba4\u4e3a1\u3002\u4f8b\u5982\uff1arange(0,5)\u7b49\u4ef7\u4e8erange(0,5,1)\u3002
\u56e0\u6b64\uff0crange(1,10,3)\u7684\u610f\u601d\u662f1\u523010\u4e4b\u95f4\u7684tuple\uff0c\u95f4\u9694\u4e3a3\uff0c\u6240\u4ee5\u7ed3\u679c\u662f(1,4,7)\u3002
\u5217\u8868(List)\u662f\u6700\u5e38\u7528\u7684Python\u6570\u636e\u7c7b\u578b\uff0c\u5b83\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u4e2a\u65b9\u62ec\u53f7\u5185\u7684\u9017\u53f7\u5206\u9694\u503c\u51fa\u73b0\u3002
\u6240\u4ee5\uff0clist(range(1,10,3))\u6267\u884c\u7ed3\u679c\u4e3a[1,4,7]\u3002



\u6269\u5c55\u8d44\u6599
Python\u5217\u8868\u51fd\u6570&\u65b9\u6cd5
Python\u5305\u542b\u4ee5\u4e0b\u51fd\u6570\uff1a
1\u3001cmp(list1, list2)\uff1a\u6bd4\u8f83\u4e24\u4e2a\u5217\u8868\u7684\u5143\u7d20\uff1b
2\u3001len(list)\uff1a\u5217\u8868\u5143\u7d20\u4e2a\u6570\uff1b
3\u3001max(list)\uff1a\u8fd4\u56de\u5217\u8868\u5143\u7d20\u6700\u5927\u503c\uff1b
4\u3001min(list)\uff1a\u8fd4\u56de\u5217\u8868\u5143\u7d20\u6700\u5c0f\u503c\uff1b
5\u3001list(seq)\uff1a\u5c06\u5143\u7ec4\u8f6c\u6362\u4e3a\u5217\u8868\u3002
Python\u5305\u542b\u4ee5\u4e0b\u65b9\u6cd5\uff1a
1\u3001list.append(obj)\uff1a\u5728\u5217\u8868\u672b\u5c3e\u6dfb\u52a0\u65b0\u7684\u5bf9\u8c61\uff1b
2\u3001list.count(obj)\uff1a\u7edf\u8ba1\u67d0\u4e2a\u5143\u7d20\u5728\u5217\u8868\u4e2d\u51fa\u73b0\u7684\u6b21\u6570\uff1b
3\u3001list.extend(seq)\uff1a\u5728\u5217\u8868\u672b\u5c3e\u4e00\u6b21\u6027\u8ffd\u52a0\u53e6\u4e00\u4e2a\u5e8f\u5217\u4e2d\u7684\u591a\u4e2a\u503c\uff08\u7528\u65b0\u5217\u8868\u6269\u5c55\u539f\u6765\u7684\u5217\u8868\uff09\uff1b
4\u3001list.index(obj)\uff1a\u4ece\u5217\u8868\u4e2d\u627e\u51fa\u67d0\u4e2a\u503c\u7b2c\u4e00\u4e2a\u5339\u914d\u9879\u7684\u7d22\u5f15\u4f4d\u7f6e\uff1b
5\u3001list.insert(index, obj)\uff1a\u5c06\u5bf9\u8c61\u63d2\u5165\u5217\u8868\uff1b
6\u3001list.pop([index=-1])\uff1a\u79fb\u9664\u5217\u8868\u4e2d\u7684\u4e00\u4e2a\u5143\u7d20\uff08\u9ed8\u8ba4\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff09\uff0c\u5e76\u4e14\u8fd4\u56de\u8be5\u5143\u7d20\u7684\u503c\uff1b
7\u3001list.remove(obj)\uff1a\u79fb\u9664\u5217\u8868\u4e2d\u67d0\u4e2a\u503c\u7684\u7b2c\u4e00\u4e2a\u5339\u914d\u9879\uff1b
8\u3001list.reverse()\uff1a\u53cd\u5411\u5217\u8868\u4e2d\u5143\u7d20\uff1b
9\u3001list.sort(cmp=None, key=None, reverse=False)\uff1a\u5bf9\u539f\u5217\u8868\u8fdb\u884c\u6392\u5e8f\u3002

print("\u7c7b\u578b\uff1a",type(range(1,5)))print(range.mro())\u770b\u7ed3\u679c\uff1a

\u8fd9\u91cc\u7684range()\u51fd\u6570\u6240\u8fd4\u56de\u7684\u5bf9\u8c61\u5728python3\u4e2d\u5e76\u4e0d\u662flist\u7c7b\u578b\u7684\uff0c\u4e5f\u4e0d\u7ee7\u627flist\u7c7b\u578b\u3002
python3\u4e2d\u7684range()\u7b49\u4e8epython2\u4e2d\u7684xrange()\uff0c\u5b83\u5176\u5b9e\u662f\u4e00\u4e2a\u751f\u6210\u5668\uff0c\u6bcf\u6b21\u53d6\u503c\u540e\u751f\u6210\u4e0b\u4e00\u4e2a\u503c\uff0c\u76ee\u7684\u662f\u8282\u7ea6\u5185\u5b58\u548c\u8fd0\u7b97\u8d44\u6e90\u3002
\u5982\u679c\u60f3\u5f97\u5230list\uff0c\u5219\u9700\u5f3a\u5236\u8f6c\u6362\u3002
print(list(range(1,5)))

python3里list(range(1, 5))返回[1, 2, 3, 4]。
range(start, stop)
遵循左闭右开原则,range()函数返回一个整数序列,范围从start到stop-1。比如range(1, 5)返回的是1~4的整数序列。而list()就是用来把整数序列转换成列表。所以结果是[1, 2, 3, 4]。

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