<\/p>\n
Python \u7684 `Counter()` \u51fd\u6578\u662f\u4f86\u81ea `collections` \u6a21\u7d44\u7684\u5f37\u5927\u5de5\u5177\uff0c\u5c08\u70ba\u8a08\u7b97\u53ef\u8fed\u4ee3\u7269\u4ef6\u4e2d\u6bcf\u500b\u5143\u7d20\u7684\u51fa\u73fe\u6b21\u6578\u800c\u8a2d\u8a08\u3002\u7121\u8ad6\u662f\u8655\u7406\u5217\u8868\u3001\u5b57\u7b26\u4e32\uff0c\u9084\u662f\u5176\u4ed6\u53ef\u8fed\u4ee3\u7269\u4ef6\uff0c`Counter()` \u90fd\u80fd\u5e6b\u52a9\u6211\u5011\u5feb\u901f\u7372\u53d6\u5143\u7d20\u983b\u7387\uff0c\u800c\u4e0d\u5fc5\u624b\u52d5\u8a08\u7b97\u3002<\/p>\n
## \u4ec0\u9ebc\u662f Counter()\uff1f<\/p>\n
`Counter()` \u51fd\u6578\u63a5\u53d7\u4efb\u4f55\u53ef\u8fed\u4ee3\u7269\u4ef6\uff0c\u4e26\u8fd4\u56de\u4e00\u500b\u5b57\u5178\uff0c\u5176\u4e2d\u9375\u662f\u53ef\u8fed\u4ee3\u7269\u4ef6\u4e2d\u7684\u5143\u7d20\uff0c\u503c\u662f\u8a72\u5143\u7d20\u51fa\u73fe\u7684\u6b21\u6578\u3002\u9019\u4f7f\u5f97\u6578\u64da\u5206\u6790\u8b8a\u5f97\u66f4\u52a0\u9ad8\u6548\u548c\u7c21\u55ae\u3002<\/p>\n
### \u4f7f\u7528\u7bc4\u4f8b<\/p>\n
\u8209\u500b\u4f8b\u5b50\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u5217\u8868\uff0c\u88e1\u9762\u6709\u4e00\u4e9b\u6578\u5b57\uff1a<\/p>\n
“`python
\nmy_list = [1, 2, 3, 4, 5, 1, 2, 3, 4, 5]\n“`<\/p>\n
\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 `Counter()` \u51fd\u6578\u4f86\u8a08\u7b97\u6bcf\u500b\u6578\u5b57\u51fa\u73fe\u7684\u6b21\u6578\uff1a<\/p>\n
“`python
\nfrom collections import Counter<\/p>\n
my_list_count = Counter(my_list)<\/p>\n
print(my_list_count)
\n“`<\/p>\n
\u8f38\u51fa\u7d50\u679c\u5c07\u6703\u662f\uff1a<\/p>\n
“`
\nCounter({1: 2, 2: 2, 3: 2, 4: 2, 5: 2})
\n“`<\/p>\n
\u9019\u500b\u7d50\u679c\u610f\u5473\u8457\uff0c\u6578\u5b57 `1` \u5230 `5` \u6bcf\u500b\u90fd\u51fa\u73fe\u4e86\u5169\u6b21\u3002<\/p>\n
### \u9032\u968e\u529f\u80fd<\/p>\n
\u9664\u4e86\u8a08\u7b97\u55ae\u4e00\u53ef\u8fed\u4ee3\u7269\u4ef6\u7684\u5143\u7d20\u983b\u7387\u5916\uff0c`Counter()` \u9084\u80fd\u8a08\u7b97\u5169\u500b\u53ef\u8fed\u4ee3\u7269\u4ef6\u4e2d\u5171\u540c\u51fa\u73fe\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n
“`python
\nlist1 = [1, 2, 3, 4, 5]\nlist2 = [2, 4, 6, 8, 10]\n
common_elements = Counter(list1) & Counter(list2)<\/p>\n
print(common_elements)
\n“`<\/p>\n
\u57f7\u884c\u7d50\u679c\u70ba\uff1a<\/p>\n
“`
\nCounter({2: 1, 4: 1})
\n“`<\/p>\n
\u9019\u986f\u793a\u4e86\u5728 `list1` \u548c `list2` \u4e2d\u5171\u540c\u51fa\u73fe\u7684\u5143\u7d20 `2` \u548c `4`\uff0c\u4e26\u5c55\u793a\u4e86\u5b83\u5011\u7684\u51fa\u73fe\u6b21\u6578\u3002<\/p>\n
### \u932f\u8aa4\u6392\u9664<\/p>\n
\u5728\u4f7f\u7528 `Counter()` \u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u7684\u554f\u984c\uff0c\u4f8b\u5982\uff1a<\/p>\n
– **\u53ef\u8fed\u4ee3\u7269\u4ef6\u70ba\u7a7a**\uff1a\u5982\u679c\u50b3\u5165\u7684\u53ef\u8fed\u4ee3\u7269\u4ef6\u70ba\u7a7a\uff0c`Counter()` \u5c07\u8fd4\u56de `Counter()`\uff0c\u5373\u4e00\u500b\u7a7a\u7684\u8a08\u6578\u5668\u3002
\n– **\u6578\u64da\u985e\u578b\u4e0d\u4e00\u81f4**\uff1a\u78ba\u4fdd\u53ef\u8fed\u4ee3\u7269\u4ef6\u4e2d\u7684\u5143\u7d20\u985e\u578b\u4e00\u81f4\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8a08\u7b97\u932f\u8aa4\u3002<\/p>\n
### \u5ef6\u4f38\u61c9\u7528<\/p>\n
`Counter()` \u5728\u6578\u64da\u5206\u6790\u3001\u7d71\u8a08\u548c\u81ea\u7136\u8a9e\u8a00\u8655\u7406\u4e2d\u90fd\u6709\u5ee3\u6cdb\u61c9\u7528\u3002\u4f60\u53ef\u4ee5\u5229\u7528\u5b83\u4f86\u5206\u6790\u6587\u672c\u6578\u64da\u3001\u8a08\u7b97\u5b57\u5143\u983b\u7387\uff0c\u751a\u81f3\u5728\u6a5f\u5668\u5b78\u7fd2\u4e2d\u9032\u884c\u7279\u5fb5\u5de5\u7a0b\u3002<\/p>\n
\u82e5\u8981\u6df1\u5165\u4e86\u89e3 Python \u7684\u5176\u4ed6\u5f37\u5927\u529f\u80fd\uff0c\u8acb\u53c3\u8003\u9019\u7bc7 [Python \u6559\u5b78\u6587](https:\/\/vocus.cc)\uff0c\u5b78\u7fd2\u66f4\u591a\u6280\u5de7\u8207\u5be6\u4f5c\u3002<\/p>\n
## \u7e3d\u7d50<\/p>\n
Python \u7684 `Counter()` \u51fd\u6578\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5feb\u901f\u7372\u53d6\u6578\u64da\u4e2d\u5143\u7d20\u7684\u51fa\u73fe\u983b\u7387\u3002\u7121\u8ad6\u662f\u5728\u6578\u64da\u5206\u6790\u9084\u662f\u65e5\u5e38\u7de8\u7a0b\u4e2d\uff0c\u5b83\u90fd\u80fd\u63d0\u5347\u6548\u7387\u4e26\u7c21\u5316\u6d41\u7a0b\u3002<\/p>\n
### Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/p>\n
**Q1: Counter() \u53ef\u4ee5\u8655\u7406\u54ea\u4e9b\u985e\u578b\u7684\u53ef\u8fed\u4ee3\u7269\u4ef6\uff1f**
\nA1: `Counter()` \u53ef\u4ee5\u8655\u7406\u4efb\u4f55\u53ef\u8fed\u4ee3\u7269\u4ef6\uff0c\u4f8b\u5982\u5217\u8868\u3001\u5143\u7d44\u3001\u5b57\u7b26\u4e32\u7b49\u3002<\/p>\n
**Q2: \u5982\u4f55\u5c0d Counter() \u7684\u7d50\u679c\u9032\u884c\u6392\u5e8f\uff1f**
\nA2: \u4f60\u53ef\u4ee5\u4f7f\u7528 `most_common()` \u65b9\u6cd5\u4f86\u7372\u53d6\u6309\u51fa\u73fe\u6b21\u6578\u6392\u5e8f\u7684\u5143\u7d20\uff0c\u4f8b\u5982 `my_list_count.most_common()`\u3002<\/p>\n
**Q3: Counter() \u662f\u5426\u53ef\u4ee5\u7528\u65bc\u8a08\u7b97\u6d6e\u9ede\u6578\u7684\u51fa\u73fe\u6b21\u6578\uff1f**
\nA3: \u662f\u7684\uff0c`Counter()` \u53ef\u4ee5\u8a08\u7b97\u6240\u6709\u53ef\u54c8\u5e0c\u985e\u578b\uff08\u5305\u62ec\u6d6e\u9ede\u6578\uff09\u7684\u51fa\u73fe\u6b21\u6578\u3002<\/p>\n
—<\/p>\n","protected":false},"excerpt":{"rendered":"
Counter()\u51fd\u6578\u662fPython\u4e2d\u7684\u4e00\u500b\u5167\u5efa\u51fd\u6578\uff0c\u53ef\u4ee5\u7528\u4f86\u8a08\u7b97\u53ef\u8fed\u4ee3\u5c0d\u8c61\u4e2d\u5143\u7d20\u51fa\u73fe\u7684\u6b21\u6578\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u5feb\u901f\u5730\u7372\u53d6\u60f3\u8981\u7684\u7d50\u679c\u3002\u672c\u6587\u5c07\u4ecb\u7d39Counter()\u51fd\u6578\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u4ee5\u53ca\u5982\u4f55\u5229\u7528\u5b83\u4f86\u89e3\u6c7a\u958b\u767c\u4e2d\u7684\u554f\u984c\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-3412","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-T2","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3412","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=3412"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3412\/revisions"}],"predecessor-version":[{"id":3413,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3412\/revisions\/3413"}],"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=3412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}