<\/p>\n
\u5728 Python \u4e2d\uff0c`operator` \u6a21\u7d44\u662f\u4e00\u500b\u6975\u5176\u6709\u7528\u7684\u5de5\u5177\uff0c\u80fd\u5920\u8b93\u958b\u767c\u8005\u5728\u7a0b\u5f0f\u78bc\u4e2d\u4f7f\u7528\u64cd\u4f5c\u7b26\u800c\u4e0d\u9700\u8981\u76f4\u63a5\u4f7f\u7528\u64cd\u4f5c\u7b26\u672c\u8eab\u3002\u9019\u4e0d\u50c5\u4f7f\u7a0b\u5f0f\u78bc\u66f4\u52a0\u7c21\u6f54\uff0c\u9084\u80fd\u63d0\u5347\u53ef\u8b80\u6027\u4e26\u6e1b\u5c11\u932f\u8aa4\u7684\u53ef\u80fd\u6027\u3002\u672c\u6587\u5c07\u63d0\u4f9b 2025 \u5e74\u6700\u65b0\u7684\u8a9e\u6cd5\u8207\u6700\u4f73\u5be6\u8e10\uff0c\u5e6b\u52a9\u4f60\u5145\u5206\u5229\u7528 Python \u7684 `operator` \u6a21\u7d44\u3002<\/p>\n
## `operator` \u6a21\u7d44\u7684\u57fa\u672c\u7528\u6cd5<\/p>\n
`operator` \u6a21\u7d44\u63d0\u4f9b\u4e86\u4e00\u4e9b\u51fd\u5f0f\uff0c\u9019\u4e9b\u51fd\u5f0f\u5c0d\u61c9\u65bc Python \u7684\u57fa\u672c\u64cd\u4f5c\u7b26\u3002\u901a\u904e\u4f7f\u7528\u9019\u4e9b\u51fd\u5f0f\uff0c\u4f60\u53ef\u4ee5\u66f4\u9748\u6d3b\u5730\u8655\u7406\u6578\u64da\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u9ad8\u968e\u51fd\u5f0f\uff08\u5982 `map()` \u6216 `filter()`\uff09\u6642\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u64cd\u4f5c\u793a\u4f8b\uff1a<\/p>\n
### \u4f7f\u7528\u52a0\u6cd5\u64cd\u4f5c\u7b26<\/p>\n
“`python
\nimport operator<\/p>\n
a = 1
\nb = 2<\/p>\n
# \u4f7f\u7528 operator.add() \u4f86\u66ff\u4ee3\u52a0\u865f
\nc = operator.add(a, b)<\/p>\n
# \u7b49\u540c\u65bc
\nc = a + b
\nprint(c) # \u8f38\u51fa 3
\n“`<\/p>\n
### \u4f7f\u7528\u6bd4\u8f03\u64cd\u4f5c\u7b26<\/p>\n
“`python
\nimport operator<\/p>\n
a = 1
\nb = 2<\/p>\n
# \u4f7f\u7528 operator.gt() \u4f86\u66ff\u4ee3\u5927\u65bc\u64cd\u4f5c\u7b26
\nc = operator.gt(a, b)<\/p>\n
# \u7b49\u540c\u65bc
\nc = a > b
\nprint(c) # \u8f38\u51fa False
\n“`<\/p>\n
## `operator` \u6a21\u7d44\u7684\u5ef6\u4f38\u61c9\u7528<\/p>\n
### \u5728\u6392\u5e8f\u4e2d\u4f7f\u7528 `operator`<\/p>\n
`operator` \u6a21\u7d44\u5728\u6578\u64da\u6392\u5e8f\u4e2d\u4e5f\u975e\u5e38\u6709\u7528\u3002\u8209\u4f8b\u4f86\u8aaa\uff0c\u7576\u4f60\u9700\u8981\u6839\u64da\u5c0d\u8c61\u7684\u67d0\u500b\u5c6c\u6027\u9032\u884c\u6392\u5e8f\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 `operator.attrgetter()` \u4f86\u7c21\u5316\u4ee3\u78bc\uff1a<\/p>\n
“`python
\nimport operator<\/p>\n
class Person:
\n def __init__(self, name, age):
\n self.name = name
\n self.age = age<\/p>\n
people = [Person(‘Alice’, 30), Person(‘Bob’, 25), Person(‘Charlie’, 35)]\n
# \u6839\u64da\u5e74\u9f61\u6392\u5e8f
\nsorted_people = sorted(people, key=operator.attrgetter(‘age’))
\nfor person in sorted_people:
\n print(person.name, person.age)
\n“`<\/p>\n
### \u932f\u8aa4\u6392\u9664<\/p>\n
\u5728\u4f7f\u7528 `operator` \u6a21\u7d44\u6642\uff0c\u5982\u679c\u4f60\u9047\u5230 TypeError \u6216 AttributeError\uff0c\u901a\u5e38\u662f\u56e0\u70ba\u53c3\u6578\u985e\u578b\u4e0d\u6b63\u78ba\u6216\u5c0d\u8c61\u5c6c\u6027\u4e0d\u5b58\u5728\u3002\u78ba\u4fdd\u4f60\u5728\u4f7f\u7528\u51fd\u5f0f\u524d\uff0c\u6aa2\u67e5\u50b3\u5165\u7684\u53c3\u6578\u985e\u578b\u53ca\u5176\u6709\u6548\u6027\u3002<\/p>\n
## \u7e3d\u7d50<\/p>\n
\u7e3d\u7d50\u4f86\u8aaa\uff0c`operator` \u6a21\u7d44\u63d0\u4f9b\u4e86\u4e00\u500b\u5f37\u5927\u7684\u65b9\u5f0f\u4f86\u7c21\u5316 Python \u7a0b\u5f0f\u78bc\u7684\u7de8\u5beb\u3002\u901a\u904e\u4f7f\u7528 `operator` \u51fd\u5f0f\uff0c\u4f60\u80fd\u5920\u8b93\u4f60\u7684\u7a0b\u5f0f\u78bc\u66f4\u52a0\u7c21\u6f54\u4e14\u6613\u65bc\u7dad\u8b77\u3002\u60f3\u4e86\u89e3\u66f4\u591a Python \u7684\u9032\u968e\u7528\u6cd5\uff0c\u8acb\u53c3\u8003 [\u76f8\u95dc\u6559\u5b78](https:\/\/vocus.cc\/article\/5e40f7cfdce8e50001aee9a2)\u3002<\/p>\n
## Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/p>\n
### 1. `operator` \u6a21\u7d44\u6709\u54ea\u4e9b\u5e38\u7528\u51fd\u5f0f\uff1f
\n`operator` \u6a21\u7d44\u5305\u542b\u591a\u7a2e\u51fd\u5f0f\uff0c\u5305\u62ec\u52a0\u6cd5\uff08`operator.add`\uff09\u3001\u6e1b\u6cd5\uff08`operator.sub`\uff09\u3001\u4e58\u6cd5\uff08`operator.mul`\uff09\u3001\u6bd4\u8f03\uff08`operator.eq`\u3001`operator.gt` \u7b49\uff09\u7b49\u3002<\/p>\n
### 2. \u4f7f\u7528 `operator` \u6a21\u7d44\u6709\u4ec0\u9ebc\u597d\u8655\uff1f
\n\u4f7f\u7528 `operator` \u6a21\u7d44\u53ef\u4ee5\u8b93\u7a0b\u5f0f\u78bc\u66f4\u5177\u53ef\u8b80\u6027\uff0c\u4e26\u53ef\u4ee5\u7c21\u5316\u9ad8\u968e\u51fd\u5f0f\u7684\u4f7f\u7528\uff0c\u8b93\u4ee3\u78bc\u66f4\u6574\u6f54\u4e14\u6613\u65bc\u7dad\u8b77\u3002<\/p>\n
### 3. \u5728\u4ec0\u9ebc\u60c5\u6cc1\u4e0b\u61c9\u8a72\u4f7f\u7528 `operator` \u6a21\u7d44\uff1f
\n\u7576\u4f60\u9700\u8981\u66f4\u9748\u6d3b\u5730\u8655\u7406\u6578\u64da\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528\u9ad8\u968e\u51fd\u5f0f\uff08\u5982 `map()`\u3001`filter()` \u6216 `sorted()`\uff09\u6642\uff0c`operator` \u6a21\u7d44\u662f\u975e\u5e38\u6709\u7528\u7684\u3002<\/p>\n
—<\/p>\n","protected":false},"excerpt":{"rendered":"
Operator()\u51fd\u6578\u662fPython\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u51fd\u6578\uff0c\u5b83\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u8f15\u9b06\u5730\u64cd\u4f5c\u548c\u6bd4\u8f03Python\u5c0d\u8c61\u3002\u672c\u6587\u5c07\u4ecb\u7d39Operator()\u51fd\u6578\u7684\u57fa\u672c\u7528\u6cd5\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u64cd\u4f5c\u548c\u6bd4\u8f03Python\u5c0d\u8c61\u3002<\/p>\n","protected":false},"author":1,"featured_media":2518,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[18],"tags":[15],"class_list":["post-3212","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python","tag-python"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2022\/12\/DALL\u00b7E-2022-12-28-14.25.55-\u62f7\u8c9d2.png","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-PO","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3212","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=3212"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3212\/revisions"}],"predecessor-version":[{"id":12906,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3212\/revisions\/12906"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/2518"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=3212"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3212"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}