{"id":943441,"date":"2024-12-26T22:40:06","date_gmt":"2024-12-26T14:40:06","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/943441.html"},"modified":"2024-12-26T22:40:09","modified_gmt":"2024-12-26T14:40:09","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95printf","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/943441.html","title":{"rendered":"python\u4e2d\u5982\u4f55printf"},"content":{"rendered":"

\"python\u4e2d\u5982\u4f55printf\"<\/p>\n

\u5728Python\u4e2d\u5b9e\u73b0\u7c7b\u4f3cC\u8bed\u8a00\u4e2d\u7684printf<\/code>\u529f\u80fd\uff0c\u53ef\u4ee5\u901a\u8fc7\u51e0\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u3001str.format()<\/code>\u65b9\u6cd5\u3001\u4ee5\u53caf\u5b57\u7b26\u4e32<\/strong>\u3002\u5176\u4e2d\uff0cf\u5b57\u7b26\u4e32\u662fPython 3.6\u53ca\u4ee5\u4e0a\u7248\u672c\u5f15\u5165\u7684\u4e00\u79cd\u6700\u4e3a\u7b80\u4fbf\u548c\u63a8\u8350\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\u3002\u5728Python\u4e2d\uff0cf\u5b57\u7b26\u4e32\u53ef\u4ee5\u901a\u8fc7\u5728\u5b57\u7b26\u4e32\u524d\u52a0\u4e0a\u5b57\u6bcdf<\/code>\uff0c\u7136\u540e\u5728\u5b57\u7b26\u4e32\u5185\u90e8\u4f7f\u7528\u5927\u62ec\u53f7{}<\/code>\u6765\u63d2\u5165\u53d8\u91cf\u6216\u8868\u8fbe\u5f0f\uff0c\u4ece\u800c\u5b9e\u73b0\u683c\u5f0f\u5316\u8f93\u51fa\u3002\u76f8\u6bd4\u4e8e\u5176\u4ed6\u65b9\u6cd5\uff0cf\u5b57\u7b26\u4e32\u66f4\u52a0\u7b80\u6d01\u548c\u76f4\u89c2\uff0c\u5c24\u5176\u9002\u5408\u5904\u7406\u590d\u6742\u7684\u5b57\u7b26\u4e32\u6a21\u677f\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32<\/h3>\n<\/p>\n

\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u662fPython\u4e2d\u6700\u53e4\u8001\u7684\u683c\u5f0f\u5316\u65b9\u6cd5\u4e4b\u4e00\uff0c\u7c7b\u4f3c\u4e8eC\u8bed\u8a00\u4e2d\u7684printf<\/code>\u3002\u5b83\u4f7f\u7528\u767e\u5206\u53f7%<\/code>\u4f5c\u4e3a\u5360\u4f4d\u7b26\uff0c\u5e76\u5728\u5b57\u7b26\u4e32\u540e\u9762\u8ddf\u4e0a\u4e00\u4e2a\u5143\u7ec4\u6765\u63d0\u4f9b\u76f8\u5e94\u7684\u503c\u3002<\/p>\n<\/p>\n

name = "Alice"<\/p>\n
age = 30<\/p>\n
print("Name: %s, Age: %d" % (name, age))<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u6709\u5176\u5c40\u9650\u6027\uff0c\u6bd4\u5982\u5728\u5904\u7406\u591a\u4e2a\u53d8\u91cf\u65f6\uff0c\u4ee3\u7801\u53ef\u80fd\u4f1a\u53d8\u5f97\u4e0d\u90a3\u4e48\u76f4\u89c2\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528 str.format()<\/code> \u65b9\u6cd5<\/h3>\n<\/p>\n
str.format()<\/code>\u65b9\u6cd5\u662fPython 2.7\u548c3.0\u5f15\u5165\u7684\u4e00\u79cd\u8f83\u65b0\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\u3002\u5b83\u901a\u8fc7\u82b1\u62ec\u53f7{}<\/code>\u4f5c\u4e3a\u5360\u4f4d\u7b26\uff0c\u5e76\u901a\u8fc7format()<\/code>\u65b9\u6cd5\u4f20\u5165\u76f8\u5e94\u7684\u503c\u3002<\/p>\n<\/p>\n
name = "Bob"<\/p>\n
age = 25<\/p>\n
print("Name: {}, Age: {}".format(name, age))<\/p>\n
<\/code><\/pre>\n<\/p>\n
str.format()<\/code>\u65b9\u6cd5\u7684\u4f18\u52bf\u5728\u4e8e\u5b83\u6bd4\u65e7\u7684\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u66f4\u4e3a\u7075\u6d3b\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u548c\u5173\u952e\u5b57\u53c2\u6570\u6765\u66f4\u597d\u5730\u63a7\u5236\u8f93\u51fa\u683c\u5f0f\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528 F \u5b57\u7b26\u4e32<\/h3>\n<\/p>\n
f\u5b57\u7b26\u4e32\u662fPython 3.6\u5f15\u5165\u7684\u4e00\u79cd\u6700\u65b0\u7684\u683c\u5f0f\u5316\u65b9\u6cd5\uff0c\u901a\u5e38\u88ab\u8ba4\u4e3a\u662f\u6700\u4e3a\u7b80\u4fbf\u548c\u76f4\u89c2\u7684\u9009\u62e9\u3002\u5b83\u5141\u8bb8\u4f60\u76f4\u63a5\u5728\u5b57\u7b26\u4e32\u4e2d\u5d4c\u5165\u8868\u8fbe\u5f0f\uff0c\u5e76\u4f1a\u5728\u8fd0\u884c\u65f6\u81ea\u52a8\u8fdb\u884c\u5b57\u7b26\u4e32\u66ff\u6362\u3002<\/p>\n<\/p>\n
name = "Charlie"<\/p>\n
age = 40<\/p>\n
print(f"Name: {name}, Age: {age}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
f\u5b57\u7b26\u4e32\u4e0d\u4ec5\u652f\u6301\u7b80\u5355\u7684\u53d8\u91cf\u66ff\u6362\uff0c\u8fd8\u53ef\u4ee5\u5728\u82b1\u62ec\u53f7\u4e2d\u8fdb\u884c\u590d\u6742\u7684\u8868\u8fbe\u5f0f\u8ba1\u7b97\uff0c\u6bd4\u5982\u8c03\u7528\u51fd\u6570\u548c\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u56db\u3001\u683c\u5f0f\u5316\u9009\u9879<\/h3>\n<\/p>\n
Python\u4e2d\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\u90fd\u652f\u6301\u4e30\u5bcc\u7684\u683c\u5f0f\u5316\u9009\u9879\uff0c\u4f8b\u5982\u6307\u5b9a\u6d6e\u70b9\u6570\u7684\u7cbe\u5ea6\u3001\u586b\u5145\u5b57\u7b26\u3001\u5bf9\u9f50\u65b9\u5f0f\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u683c\u5f0f\u5316\u9009\u9879\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
value = 123.456789<\/p>\n
print(f"Formatted value: {value:.2f}")  # \u8f93\u51fa: Formatted value: 123.46<\/p>\n
print("Formatted value: {:.2f}".format(value))  # \u8f93\u51fa: Formatted value: 123.46<\/p>\n
print("Formatted value: %.2f" % value)  # \u8f93\u51fa: Formatted value: 123.46<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
Python\u63d0\u4f9b\u4e86\u591a\u79cd\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u9002\u7528\u573a\u666f\u548c\u4f18\u52a3\u52bf\u3002f\u5b57\u7b26\u4e32\u662f\u73b0\u4ee3Python\u4e2d\u6700\u7b80\u4fbf\u548c\u63a8\u8350\u7684\u9009\u62e9<\/strong>\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4ec5\u8bed\u6cd5\u7b80\u6d01\uff0c\u800c\u4e14\u529f\u80fd\u5f3a\u5927\uff0c\u80fd\u591f\u6ee1\u8db3\u5927\u591a\u6570\u683c\u5f0f\u5316\u9700\u6c42\u3002\u540c\u65f6\uff0c\u7406\u89e3str.format()<\/code>\u65b9\u6cd5\u548c\u767e\u5206\u53f7\u683c\u5f0f\u5316\u4e5f\u6709\u52a9\u4e8e\u7ef4\u62a4\u548c\u9605\u8bfb\u65e7\u4ee3\u7801\u3002\u65e0\u8bba\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\uff0c\u719f\u7ec3\u638c\u63e1\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u6280\u672f\u90fd\u662f\u63d0\u5347Python\u7f16\u7a0b\u80fd\u529b\u7684\u91cd\u8981\u4e00\u73af\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5728Python\u4e2d\uff0c\u5982\u4f55\u683c\u5f0f\u5316\u8f93\u51fa\u5b57\u7b26\u4e32\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u5f0f\u6765\u683c\u5f0f\u5316\u8f93\u51fa\u5b57\u7b26\u4e32\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528f-strings\u3001format()\u65b9\u6cd5\u548c\u767e\u5206\u53f7\uff08%\uff09\u683c\u5f0f\u5316\u3002f-strings\u662f\u5728Python 3.6\u53ca\u4ee5\u4e0a\u7248\u672c\u5f15\u5165\u7684\uff0c\u4f7f\u7528\u8d77\u6765\u975e\u5e38\u7b80\u6d01\u3002\u4f8b\u5982\uff1aname = "Alice"; print(f"Hello, {name}!")<\/code>\u3002\u4f7f\u7528format()\u65b9\u6cd5\u5219\u53ef\u4ee5\u901a\u8fc7print("Hello, {}!".format(name))<\/code>\u6765\u5b9e\u73b0\u7c7b\u4f3c\u7684\u6548\u679c\u3002\u800c\u4f7f\u7528\u767e\u5206\u53f7\u683c\u5f0f\u5316\u53ef\u4ee5\u8fd9\u6837\u5199\uff1aprint("Hello, %s!" % name)<\/code>\u3002<\/p>\n
\u5982\u4f55\u5728Python\u4e2d\u63a7\u5236\u8f93\u51fa\u7684\u6570\u5b57\u683c\u5f0f\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u683c\u5f0f\u63a7\u5236\u6570\u5b57\u7684\u8f93\u51fa\u3002\u4f8b\u5982\uff0c\u4f7f\u7528f-strings\u65f6\uff0c\u53ef\u4ee5\u5199\u6210print(f"{value:.2f}")<\/code>\uff0c\u8fd9\u6837\u53ef\u4ee5\u5c06\u6570\u5b57\u683c\u5f0f\u5316\u4e3a\u5c0f\u6570\u70b9\u540e\u4e24\u4f4d\u3002\u4f7f\u7528format()\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u76f8\u540c\u7684\u6548\u679c\uff0c\u5982print("Value: {:.2f}".format(value))<\/code>\u3002\u8fd9\u79cd\u683c\u5f0f\u5316\u65b9\u5f0f\u5bf9\u4e8e\u8d22\u52a1\u6570\u636e\u6216\u79d1\u5b66\u8ba1\u7b97\u4e2d\u7684\u7cbe\u5ea6\u8981\u6c42\u975e\u5e38\u6709\u7528\u3002<\/p>\n
Python\u4e2d\u662f\u5426\u53ef\u4ee5\u8f93\u51fa\u591a\u79cd\u6570\u636e\u7c7b\u578b\uff1f<\/strong>
\u5f53\u7136\u53ef\u4ee5\uff01Python\u7684print()\u51fd\u6570\u652f\u6301\u591a\u79cd\u6570\u636e\u7c7b\u578b\u7684\u8f93\u51fa\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u3001\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5217\u8868\u3001\u5b57\u5178\u7b49\u3002\u53ef\u4ee5\u901a\u8fc7\u5728print()\u51fd\u6570\u4e2d\u5c06\u591a\u4e2a\u53c2\u6570\u7528\u9017\u53f7\u5206\u5f00\u6765\u5b9e\u73b0\u3002\u4f8b\u5982\uff0cprint("Name:", name, "Age:", age)<\/code>\u53ef\u4ee5\u540c\u65f6\u8f93\u51fa\u5b57\u7b26\u4e32\u548c\u53d8\u91cf\u7684\u503c\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u683c\u5f0f\u5316\u8f93\u51fa\u65f6\uff0c\u4e5f\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u5c06\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u7ec4\u5408\u5728\u4e00\u8d77\uff0c\u589e\u5f3a\u8f93\u51fa\u7684\u53ef\u8bfb\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u5b9e\u73b0\u7c7b\u4f3cC\u8bed\u8a00\u4e2d\u7684printf\u529f\u80fd\uff0c\u53ef\u4ee5\u901a\u8fc7\u51e0\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u3001str.form […]","protected":false},"author":3,"featured_media":943442,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/943441"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=943441"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/943441\/revisions"}],"predecessor-version":[{"id":943443,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/943441\/revisions\/943443"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/943442"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=943441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=943441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=943441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}