{"id":3134,"date":"2025-06-02T16:45:10","date_gmt":"2025-06-04T08:49:10","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=3134"},"modified":"2025-06-04T16:45:10","modified_gmt":"2025-06-04T08:49:10","slug":"%e4%bd%bf%e7%94%a8python%e7%9a%84format%e5%87%bd%e6%95%b8%e7%b0%a1%e5%96%ae%e5%bf%ab%e9%80%9f%e5%9c%b0%e6%a0%bc%e5%bc%8f%e5%8c%96%e5%ad%97%e4%b8%b2-3","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/%e4%bd%bf%e7%94%a8python%e7%9a%84format%e5%87%bd%e6%95%b8%e7%b0%a1%e5%96%ae%e5%bf%ab%e9%80%9f%e5%9c%b0%e6%a0%bc%e5%bc%8f%e5%8c%96%e5%ad%97%e4%b8%b2-3\/","title":{"rendered":"2025 \u6700\u65b0\u7248 Python \u5b57\u4e32\u683c\u5f0f\u5316\uff1a\u6df1\u5165\u63a2\u8a0e format() \u51fd\u6578\u53ca\u5176\u61c9\u7528"},"content":{"rendered":"

<\/p>\n

Python \u7684 format() \u51fd\u6578<\/h1>\n

\u5728 Python \u4e2d\uff0c`format()` \u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u8f15\u9b06\u5730\u683c\u5f0f\u5316\u5b57\u4e32\uff0c\u4f7f\u5176\u66f4\u5177\u53ef\u8b80\u6027\u8207\u9748\u6d3b\u6027\u3002\u96a8\u8457 Python \u8a9e\u8a00\u7684\u6f14\u9032\uff0c`f-string`\uff08\u683c\u5f0f\u5316\u5b57\u4e32\uff09\u5df2\u6210\u70ba\u66f4\u63a8\u85a6\u7684\u65b9\u5f0f\uff0c\u4f46 `format()` \u51fd\u6578\u4ecd\u7136\u5177\u6709\u5176\u7368\u7279\u7684\u50f9\u503c\u8207\u61c9\u7528\u5834\u666f\u3002<\/p>\n

format() \u51fd\u6578\u7684\u57fa\u672c\u7528\u6cd5<\/h2>\n

`format()` \u51fd\u6578\u7684\u57fa\u672c\u7528\u6cd5\u662f\u5c07\u5b57\u4e32\u4e2d\u7684\u4f54\u4f4d\u7b26\u66ff\u63db\u70ba\u6307\u5b9a\u7684\u5167\u5bb9\u3002\u4f8b\u5982\uff1a<\/p>\n

“`python
\nname = “John”
\nprint(“Hello, {name}!”.format(name=name))
\n“`<\/p>\n

\u9019\u6bb5\u7a0b\u5f0f\u78bc\u8f38\u51fa\uff1a<\/p>\n

“`
\nHello, John!
\n“`<\/p>\n

\u9019\u6a23\u7684\u5beb\u6cd5\u4e0d\u50c5\u6e05\u6670\uff0c\u9084\u8b93\u5b57\u4e32\u7684\u683c\u5f0f\u5316\u8b8a\u5f97\u7c21\u55ae\u6613\u61c2\u3002<\/p>\n

\u683c\u5f0f\u5316\u6578\u5b57<\/h2>\n

\u9664\u4e86\u5b57\u4e32\uff0c`format()` \u51fd\u6578\u9084\u53ef\u4ee5\u7528\u4f86\u683c\u5f0f\u5316\u6578\u5b57\u3002\u4f8b\u5982\uff1a<\/p>\n

“`python
\nnum = 123.4567
\nprint(“The number is {num:.2f}”.format(num=num))
\n“`<\/p>\n

\u9019\u6bb5\u7a0b\u5f0f\u78bc\u8f38\u51fa\uff1a<\/p>\n

“`
\nThe number is 123.46
\n“`<\/p>\n

\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u9019\u88e1\u4f7f\u7528\u4e86\u683c\u5f0f\u898f\u7bc4\u7b26\u865f\uff0c\u5c07\u6578\u5b57\u683c\u5f0f\u5316\u70ba\u5169\u4f4d\u5c0f\u6578\u3002<\/p>\n

\u683c\u5f0f\u5316\u65e5\u671f<\/h2>\n

`format()` \u51fd\u6578\u540c\u6a23\u652f\u63f4\u65e5\u671f\u7684\u683c\u5f0f\u5316\uff0c\u4ee5\u4e0b\u662f\u4e00\u500b\u7bc4\u4f8b\uff1a<\/p>\n

“`python
\nimport datetime
\ndate = datetime.datetime.now()
\nprint(“Today is {date:%Y-%m-%d}”.format(date=date))
\n“`<\/p>\n

\u9019\u6bb5\u7a0b\u5f0f\u78bc\u6703\u8f38\u51fa\u7576\u524d\u65e5\u671f\uff0c\u4f8b\u5982\uff1a<\/p>\n

“`
\nToday is 2025-06-01
\n“`<\/p>\n

\u683c\u5f0f\u5316\u5b57\u5178<\/h2>\n

\u4f7f\u7528 `format()` \u51fd\u6578\u683c\u5f0f\u5316\u5b57\u5178\u4e5f\u76f8\u7576\u7c21\u55ae\uff0c\u8acb\u770b\u4ee5\u4e0b\u7bc4\u4f8b\uff1a<\/p>\n

“`python
\nperson = {‘name’: ‘John’, ‘age’: 25}
\nprint(“{person[name]} is {person[age]} years old”.format(person=person))
\n“`<\/p>\n

\u9019\u6bb5\u7a0b\u5f0f\u78bc\u5c07\u8f38\u51fa\uff1a<\/p>\n

“`
\nJohn is 25 years old
\n“`<\/p>\n

\u683c\u5f0f\u5316\u5217\u8868<\/h2>\n

\u5c0d\u65bc\u5217\u8868\u7684\u683c\u5f0f\u5316\uff0c`format()` \u51fd\u6578\u540c\u6a23\u53ef\u4ee5\u8f15\u9b06\u8655\u7406\uff1a<\/p>\n

“`python
\nnumbers = [1, 2, 3]\nprint(“The numbers are {numbers[0]}, {numbers[1]}, and {numbers[2]}”.format(numbers=numbers))
\n“`<\/p>\n

\u9019\u88e1\u7684\u8f38\u51fa\u7d50\u679c\u70ba\uff1a<\/p>\n

“`
\nThe numbers are 1, 2, and 3
\n“`<\/p>\n

\u4f7f\u7528 f-string \u9032\u884c\u683c\u5f0f\u5316<\/h2>\n

\u96d6\u7136 `format()` \u51fd\u6578\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u529f\u80fd\uff0c\u4f46\u5728 Python 3.6 \u4e4b\u5f8c\uff0c`f-string` \u88ab\u5f15\u5165\uff0c\u4e26\u6210\u70ba\u4e86\u66f4\u7c21\u6f54\u7684\u683c\u5f0f\u5316\u65b9\u5f0f\u3002\u4f8b\u5982\uff1a<\/p>\n

“`python
\nname = “John”
\nnum = 123.4567
\ndate = datetime.datetime.now()<\/p>\n

print(f”Hello, {name}!”)
\nprint(f”The number is {num:.2f}”)
\nprint(f”Today is {date:%Y-%m-%d}”)
\n“`<\/p>\n

\u9019\u7a2e\u8a9e\u6cd5\u66f4\u76f4\u89c0\u4e14\u6613\u65bc\u95b1\u8b80\uff0c\u662f Python \u958b\u767c\u8005\u7684\u9996\u9078\u3002<\/p>\n

\u932f\u8aa4\u6392\u9664<\/h2>\n

\u5728\u4f7f\u7528 `format()` \u51fd\u6578\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u932f\u8aa4\uff0c\u4f8b\u5982\uff1a<\/p>\n

– **KeyError**\uff1a\u7576\u4f60\u5617\u8a66\u4f7f\u7528\u4e0d\u5b58\u5728\u7684\u9375\u6642\uff0c\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002\u8acb\u6aa2\u67e5\u4f60\u7684\u5b57\u5178\u6216\u8b8a\u6578\u540d\u7a31\u662f\u5426\u6b63\u78ba\u3002
\n– **IndexError**\uff1a\u7576\u5217\u8868\u4e2d\u6c92\u6709\u8db3\u5920\u7684\u9805\u76ee\u6642\uff0c\u5c07\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002\u78ba\u4fdd\u4f60\u7684\u5217\u8868\u9577\u5ea6\u7b26\u5408\u4f60\u8981\u8a2a\u554f\u7684\u7d22\u5f15\u3002<\/p>\n

\u5ef6\u4f38\u61c9\u7528<\/h2>\n

`format()` \u51fd\u6578\u5728\u8655\u7406\u5927\u578b\u5c08\u6848\u3001\u5831\u544a\u751f\u6210\u6216\u6578\u64da\u5c55\u793a\u6642\u975e\u5e38\u6709\u7528\u3002\u958b\u767c\u8005\u53ef\u5229\u7528\u5b83\u4f86\u5275\u5efa\u7c21\u5831\u3001\u751f\u6210\u5831\u544a\u6216\u683c\u5f0f\u5316\u65e5\u8a8c\u8f38\u51fa\u3002<\/p>\n

\u66f4\u591a\u95dc\u65bc Python \u7684\u6559\u5b78\u8207\u8cc7\u6e90\uff0c\u8acb\u53c3\u8003 [vocus.cc \u7684 Python \u6559\u5b78\u6587\u7ae0](https:\/\/vocus.cc)\u3002<\/p>\n

Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n

**Q1: format() \u51fd\u6578\u8207 f-string \u6709\u4ec0\u9ebc\u5dee\u7570\uff1f**
\nA1: `format()` \u51fd\u6578\u662f Python 2 \u548c 3 \u90fd\u652f\u6301\u7684\u683c\u5f0f\u5316\u65b9\u6cd5\uff0c\u800c f-string \u662f Python 3.6 \u53ca\u4ee5\u4e0a\u7248\u672c\u7684\u7279\u6027\u3002f-string \u66f4\u52a0\u7c21\u6f54\u4e14\u6613\u65bc\u95b1\u8b80\u3002<\/p>\n

**Q2: format() \u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u8655\u7406\u54ea\u4e9b\u8cc7\u6599\u985e\u578b\uff1f**
\nA2: `format()` \u51fd\u6578\u53ef\u4ee5\u8655\u7406\u5b57\u4e32\u3001\u6578\u5b57\u3001\u65e5\u671f\u3001\u5b57\u5178\u548c\u5217\u8868\u7b49\u591a\u7a2e\u8cc7\u6599\u985e\u578b\uff0c\u4e26\u80fd\u5920\u9748\u6d3b\u5730\u683c\u5f0f\u5316\u5b83\u5011\u3002<\/p>\n

**Q3: \u4f7f\u7528 format() \u6642\u6703\u9047\u5230\u54ea\u4e9b\u5e38\u898b\u932f\u8aa4\uff1f**
\nA3: \u5e38\u898b\u932f\u8aa4\u5305\u62ec KeyError \u548c IndexError\uff0c\u9019\u901a\u5e38\u662f\u7531\u65bc\u9375\u540d\u6216\u7d22\u5f15\u4e0d\u6b63\u78ba\u6240\u5f15\u8d77\u7684\u3002<\/p>\n

—<\/p>\n

\u9019\u6a23\u7684\u512a\u5316\u4e0d\u50c5\u63d0\u5347\u4e86\u6587\u7ae0\u7684\u53ef\u8b80\u6027\u548c\u5b8c\u6574\u6027\uff0c\u9084\u66f4\u7b26\u5408 SEO \u6700\u4f73\u5be6\u8e10\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e86\u89e3\u5982\u4f55\u4f7f\u7528Python\u7684Format()\u51fd\u6578\u4f86\u683c\u5f0f\u5316\u5b57\u4e32\uff0c\u4ee5\u7372\u5f97\u66f4\u597d\u7684SEO\u512a\u5316\u6548\u679c\u3002\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528Format()\u51fd\u6578\u4f86\u63d0\u9ad8\u7a0b\u5f0f\u78bc\u7684\u53ef\u8b80\u6027\uff0c\u4e26\u66f4\u6709\u6548\u5730\u7ba1\u7406\u5b57\u4e32\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-3134","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-Oy","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3134","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=3134"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3134\/revisions"}],"predecessor-version":[{"id":12930,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3134\/revisions\/12930"}],"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=3134"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3134"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}