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  212. <!-- Page content -->
  213. <doc-anchor-target id="operator" class="break-words">
  214. <h1>
  215. <doc-anchor-trigger class="header-anchor-trigger" to="#operator">#</doc-anchor-trigger>
  216. <span>operator</span>
  217. </h1>
  218. </doc-anchor-target>
  219. <p>The operator module exports a set of efficient functions corresponding to the intrinsic operators of Python. For example, <code translate="no" v-pre>operator.add(x, y)</code> is equivalent to the expression <code translate="no" v-pre>x+y</code>. Many function names are those used for special methods, without the double underscores.</p>
  220. <doc-anchor-target id="mapping-operators-to-functions">
  221. <h2>
  222. <doc-anchor-trigger class="header-anchor-trigger" to="#mapping-operators-to-functions">#</doc-anchor-trigger>
  223. <span>Mapping Operators to Functions</span>
  224. </h2>
  225. </doc-anchor-target>
  226. <div class="table-wrapper scrollbar overflow-hidden">
  227. <table class="comfortable">
  228. <thead>
  229. <tr>
  230. <th>Operation</th>
  231. <th>Syntax</th>
  232. <th>Function</th>
  233. </tr>
  234. </thead>
  235. <tbody>
  236. <tr>
  237. <td>Ordering</td>
  238. <td><code translate="no" v-pre>a &lt;= b</code></td>
  239. <td><code translate="no" v-pre>le(a, b)</code></td>
  240. </tr>
  241. <tr>
  242. <td>Ordering</td>
  243. <td><code translate="no" v-pre>a &lt; b</code></td>
  244. <td><code translate="no" v-pre>lt(a, b)</code></td>
  245. </tr>
  246. <tr>
  247. <td>Ordering</td>
  248. <td><code translate="no" v-pre>a &gt;= b</code></td>
  249. <td><code translate="no" v-pre>ge(a, b)</code></td>
  250. </tr>
  251. <tr>
  252. <td>Ordering</td>
  253. <td><code translate="no" v-pre>a &gt; b</code></td>
  254. <td><code translate="no" v-pre>gt(a, b)</code></td>
  255. </tr>
  256. <tr>
  257. <td>Equality</td>
  258. <td><code translate="no" v-pre>a == b</code></td>
  259. <td><code translate="no" v-pre>eq(a, b)</code></td>
  260. </tr>
  261. <tr>
  262. <td>Equality</td>
  263. <td><code translate="no" v-pre>a != b</code></td>
  264. <td><code translate="no" v-pre>ne(a, b)</code></td>
  265. </tr>
  266. <tr>
  267. <td>Bitwise AND</td>
  268. <td><code translate="no" v-pre>a &amp; b</code></td>
  269. <td><code translate="no" v-pre>and_(a, b)</code></td>
  270. </tr>
  271. <tr>
  272. <td>Bitwise OR</td>
  273. <td><code translate="no" v-pre>a | b</code></td>
  274. <td><code translate="no" v-pre>or_(a, b)</code></td>
  275. </tr>
  276. <tr>
  277. <td>Bitwise XOR</td>
  278. <td><code translate="no" v-pre>a ^ b</code></td>
  279. <td><code translate="no" v-pre>xor(a, b)</code></td>
  280. </tr>
  281. <tr>
  282. <td>Bitwise Inversion</td>
  283. <td><code translate="no" v-pre>~a</code></td>
  284. <td><code translate="no" v-pre>invert(a)</code></td>
  285. </tr>
  286. <tr>
  287. <td>Left Shift</td>
  288. <td><code translate="no" v-pre>a &lt;&lt; b</code></td>
  289. <td><code translate="no" v-pre>lshift(a, b)</code></td>
  290. </tr>
  291. <tr>
  292. <td>Right Shift</td>
  293. <td><code translate="no" v-pre>a &gt;&gt; b</code></td>
  294. <td><code translate="no" v-pre>rshift(a, b)</code></td>
  295. </tr>
  296. <tr>
  297. <td>Identity</td>
  298. <td><code translate="no" v-pre>a is b</code></td>
  299. <td><code translate="no" v-pre>is_(a, b)</code></td>
  300. </tr>
  301. <tr>
  302. <td>Identity</td>
  303. <td><code translate="no" v-pre>a is not b</code></td>
  304. <td><code translate="no" v-pre>is_not(a, b)</code></td>
  305. </tr>
  306. <tr>
  307. <td>Negation (Logical)</td>
  308. <td><code translate="no" v-pre>not a</code></td>
  309. <td><code translate="no" v-pre>not_(a)</code></td>
  310. </tr>
  311. <tr>
  312. <td>Negation (Arithmetic)</td>
  313. <td><code translate="no" v-pre>-a</code></td>
  314. <td><code translate="no" v-pre>neg(a)</code></td>
  315. </tr>
  316. <tr>
  317. <td>Truth Test</td>
  318. <td><code translate="no" v-pre>bool(a)</code></td>
  319. <td><code translate="no" v-pre>truth(a)</code></td>
  320. </tr>
  321. <tr>
  322. <td>Containment Test</td>
  323. <td><code translate="no" v-pre>b in a</code></td>
  324. <td><code translate="no" v-pre>contains(a, b)</code></td>
  325. </tr>
  326. <tr>
  327. <td>Addition</td>
  328. <td><code translate="no" v-pre>a + b</code></td>
  329. <td><code translate="no" v-pre>add(a, b)</code></td>
  330. </tr>
  331. <tr>
  332. <td>Subtraction</td>
  333. <td><code translate="no" v-pre>a - b</code></td>
  334. <td><code translate="no" v-pre>sub(a, b)</code></td>
  335. </tr>
  336. <tr>
  337. <td>Multiplication</td>
  338. <td><code translate="no" v-pre>a * b</code></td>
  339. <td><code translate="no" v-pre>mul(a, b)</code></td>
  340. </tr>
  341. <tr>
  342. <td>Division</td>
  343. <td><code translate="no" v-pre>a / b</code></td>
  344. <td><code translate="no" v-pre>truediv(a, b)</code></td>
  345. </tr>
  346. <tr>
  347. <td>Division</td>
  348. <td><code translate="no" v-pre>a // b</code></td>
  349. <td><code translate="no" v-pre>floordiv(a, b)</code></td>
  350. </tr>
  351. <tr>
  352. <td>Modulo</td>
  353. <td><code translate="no" v-pre>a % b</code></td>
  354. <td><code translate="no" v-pre>mod(a, b)</code></td>
  355. </tr>
  356. <tr>
  357. <td>Exponentiation</td>
  358. <td><code translate="no" v-pre>a ** b</code></td>
  359. <td><code translate="no" v-pre>pow(a, b)</code></td>
  360. </tr>
  361. <tr>
  362. <td>Matrix Multiplication</td>
  363. <td><code translate="no" v-pre>a @ b</code></td>
  364. <td><code translate="no" v-pre>matmul(a, b)</code></td>
  365. </tr>
  366. <tr>
  367. <td>Indexing</td>
  368. <td><code translate="no" v-pre>a[b]</code></td>
  369. <td><code translate="no" v-pre>getitem(a, b)</code></td>
  370. </tr>
  371. <tr>
  372. <td>Index Assignment</td>
  373. <td><code translate="no" v-pre>a[b] = c</code></td>
  374. <td><code translate="no" v-pre>setitem(a, b, c)</code></td>
  375. </tr>
  376. <tr>
  377. <td>Index Deletion</td>
  378. <td><code translate="no" v-pre>del a[b]</code></td>
  379. <td><code translate="no" v-pre>delitem(a, b)</code></td>
  380. </tr>
  381. </tbody>
  382. </table>
  383. </div>
  384. <doc-anchor-target id="in-place-operators">
  385. <h2>
  386. <doc-anchor-trigger class="header-anchor-trigger" to="#in-place-operators">#</doc-anchor-trigger>
  387. <span>In-place Operators</span>
  388. </h2>
  389. </doc-anchor-target>
  390. <div class="table-wrapper scrollbar overflow-hidden">
  391. <table class="comfortable">
  392. <thead>
  393. <tr>
  394. <th>Operation</th>
  395. <th>Syntax</th>
  396. <th>Function</th>
  397. </tr>
  398. </thead>
  399. <tbody>
  400. <tr>
  401. <td>Addition</td>
  402. <td><code translate="no" v-pre>a += b</code></td>
  403. <td><code translate="no" v-pre>iadd(a, b)</code></td>
  404. </tr>
  405. <tr>
  406. <td>Subtraction</td>
  407. <td><code translate="no" v-pre>a -= b</code></td>
  408. <td><code translate="no" v-pre>isub(a, b)</code></td>
  409. </tr>
  410. <tr>
  411. <td>Multiplication</td>
  412. <td><code translate="no" v-pre>a *= b</code></td>
  413. <td><code translate="no" v-pre>imul(a, b)</code></td>
  414. </tr>
  415. <tr>
  416. <td>Division</td>
  417. <td><code translate="no" v-pre>a /= b</code></td>
  418. <td><code translate="no" v-pre>itruediv(a, b)</code></td>
  419. </tr>
  420. <tr>
  421. <td>Division</td>
  422. <td><code translate="no" v-pre>a //= b</code></td>
  423. <td><code translate="no" v-pre>ifloordiv(a, b)</code></td>
  424. </tr>
  425. <tr>
  426. <td>Modulo</td>
  427. <td><code translate="no" v-pre>a %= b</code></td>
  428. <td><code translate="no" v-pre>imod(a, b)</code></td>
  429. </tr>
  430. <tr>
  431. <td>Bitwise AND</td>
  432. <td><code translate="no" v-pre>a &amp;= b</code></td>
  433. <td><code translate="no" v-pre>iand(a, b)</code></td>
  434. </tr>
  435. <tr>
  436. <td>Bitwise OR</td>
  437. <td><code translate="no" v-pre>a |= b</code></td>
  438. <td><code translate="no" v-pre>ior(a, b)</code></td>
  439. </tr>
  440. <tr>
  441. <td>Bitwise XOR</td>
  442. <td><code translate="no" v-pre>a ^= b</code></td>
  443. <td><code translate="no" v-pre>ixor(a, b)</code></td>
  444. </tr>
  445. <tr>
  446. <td>Left Shift</td>
  447. <td><code translate="no" v-pre>a &lt;&lt;= b</code></td>
  448. <td><code translate="no" v-pre>ilshift(a, b)</code></td>
  449. </tr>
  450. <tr>
  451. <td>Right Shift</td>
  452. <td><code translate="no" v-pre>a &gt;&gt;= b</code></td>
  453. <td><code translate="no" v-pre>irshift(a, b)</code></td>
  454. </tr>
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