{"id":1112018,"date":"2025-01-08T17:34:41","date_gmt":"2025-01-08T09:34:41","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1112018.html"},"modified":"2025-01-08T17:34:44","modified_gmt":"2025-01-08T09:34:44","slug":"python%e5%a6%82%e4%bd%95%e8%ae%be%e7%bd%ae%e8%be%93%e5%87%ba%e4%bf%9d%e7%95%99%e4%b8%a4%e4%bd%8d%e5%b0%8f%e6%95%b0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1112018.html","title":{"rendered":"python\u5982\u4f55\u8bbe\u7f6e\u8f93\u51fa\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570"},"content":{"rendered":"

\"python\u5982\u4f55\u8bbe\u7f6e\u8f93\u51fa\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\"<\/p>\n

Python\u8bbe\u7f6e\u8f93\u51fa\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570round()\u3001\u4f7f\u7528decimal\u6a21\u5757\u3001\u4f7f\u7528format()\u51fd\u6570\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5176\u4e2d\u7684\u4e00\u79cd\u65b9\u6cd5\u2014\u2014\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3002<\/strong><\/p>\n<\/p>\n

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

\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u662fPython\u4e2d\u6700\u76f4\u89c2\u548c\u5e38\u7528\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u901a\u8fc7\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26%.2f<\/code>\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u64cd\u4f5c\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n

number = 3.14159<\/p>\n
formatted_number = "%.2f" % number<\/p>\n
print(formatted_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c%.2f<\/code>\u4e2d\u7684%<\/code>\u8868\u793a\u683c\u5f0f\u5316\u64cd\u4f5c\uff0c.2<\/code>\u8868\u793a\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\uff0cf<\/code>\u8868\u793a\u6d6e\u70b9\u6570\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u786e\u4fdd\u8f93\u51fa\u7684\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570round()<\/p>\n<\/p>\n
Python\u7684\u5185\u7f6e\u51fd\u6570round()<\/code>\u4e5f\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002\u8be5\u51fd\u6570\u53ef\u4ee5\u5bf9\u6d6e\u70b9\u6570\u8fdb\u884c\u56db\u820d\u4e94\u5165\uff0c\u4fdd\u7559\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u64cd\u4f5c\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n
number = 3.14159<\/p>\n
rounded_number = round(number, 2)<\/p>\n
print(rounded_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cround()<\/code>\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u9700\u8981\u683c\u5f0f\u5316\u7684\u6d6e\u70b9\u6570\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u9700\u8981\u4fdd\u7559\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528decimal\u6a21\u5757<\/p>\n<\/p>\n
Python\u7684decimal<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7cbe\u5ea6\u7684\u6d6e\u70b9\u6570\u64cd\u4f5c\uff0c\u9002\u7528\u4e8e\u5bf9\u7cbe\u5ea6\u8981\u6c42\u8f83\u9ad8\u7684\u573a\u5408\u3002\u901a\u8fc7decimal<\/code>\u6a21\u5757\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u64cd\u4f5c\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n
from decimal import Decimal, ROUND_HALF_UP<\/p>\n
number = Decimal('3.14159')<\/p>\n
formatted_number = number.quantize(Decimal('0.00'), rounding=ROUND_HALF_UP)<\/p>\n
print(formatted_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cDecimal<\/code>\u7c7b\u7528\u4e8e\u521b\u5efa\u9ad8\u7cbe\u5ea6\u7684\u6d6e\u70b9\u6570\u5bf9\u8c61\uff0cquantize()<\/code>\u65b9\u6cd5\u7528\u4e8e\u6307\u5b9a\u4fdd\u7559\u7684\u5c0f\u6570\u4f4d\u6570\u548c\u820d\u5165\u65b9\u5f0f\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5b9e\u73b0\u9ad8\u7cbe\u5ea6\u7684\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528format()\u51fd\u6570<\/p>\n<\/p>\n
Python\u7684format()<\/code>\u51fd\u6570\u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u529f\u80fd\u3002\u901a\u8fc7\u4f7f\u7528format()<\/code>\u51fd\u6570\uff0c\u53ef\u4ee5\u5b9e\u73b0\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u64cd\u4f5c\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n
number = 3.14159<\/p>\n
formatted_number = "{:.2f}".format(number)<\/p>\n
print(formatted_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c{:.2f}<\/code>\u4e2d\u7684:<\/code>\u8868\u793a\u683c\u5f0f\u5316\u64cd\u4f5c\uff0c.2<\/code>\u8868\u793a\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\uff0cf<\/code>\u8868\u793a\u6d6e\u70b9\u6570\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n
\u603b\u7ed3\uff1a<\/p>\n<\/p>\n
Python\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u5b9e\u73b0\u8f93\u51fa\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570round()\u3001\u4f7f\u7528decimal\u6a21\u5757\u3001\u4f7f\u7528format()\u51fd\u6570\u3002<\/strong> \u5176\u4e2d\uff0c\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u548cformat()<\/code>\u51fd\u6570\u662f\u6700\u76f4\u89c2\u548c\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u4e00\u822c\u573a\u5408\uff1bround()<\/code>\u51fd\u6570\u9002\u7528\u4e8e\u5bf9\u7cbe\u5ea6\u8981\u6c42\u4e0d\u9ad8\u7684\u573a\u5408\uff1bdecimal<\/code>\u6a21\u5757\u9002\u7528\u4e8e\u5bf9\u7cbe\u5ea6\u8981\u6c42\u8f83\u9ad8\u7684\u573a\u5408\u3002\u901a\u8fc7\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n
\u4e00\u3001\u5b57\u7b26\u4e32\u683c\u5f0f\u5316<\/h3>\n<\/p>\n
\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u662fPython\u4e2d\u6700\u76f4\u89c2\u548c\u5e38\u7528\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u901a\u8fc7\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26%.2f<\/code>\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n
1.1 \u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n
number = 3.14159<\/p>\n
formatted_number = "%.2f" % number<\/p>\n
print(formatted_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c%.2f<\/code>\u4e2d\u7684%<\/code>\u8868\u793a\u683c\u5f0f\u5316\u64cd\u4f5c\uff0c.2<\/code>\u8868\u793a\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\uff0cf<\/code>\u8868\u793a\u6d6e\u70b9\u6570\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u786e\u4fdd\u8f93\u51fa\u7684\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u3002<\/p>\n<\/p>\n
1.2 \u591a\u4e2a\u6d6e\u70b9\u6570\u683c\u5f0f\u5316<\/h4>\n<\/p>\n
\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u8fd8\u53ef\u4ee5\u540c\u65f6\u5904\u7406\u591a\u4e2a\u6d6e\u70b9\u6570\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u64cd\u4f5c\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n
number1 = 3.14159<\/p>\n
number2 = 2.71828<\/p>\n
formatted_numbers = "Number1: %.2f, Number2: %.2f" % (number1, number2)<\/p>\n
print(formatted_numbers)  # \u8f93\u51fa\uff1aNumber1: 3.14, Number2: 2.72<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u901a\u8fc7%<\/code>\u8fd0\u7b97\u7b26\u53ef\u4ee5\u540c\u65f6\u683c\u5f0f\u5316\u591a\u4e2a\u6d6e\u70b9\u6570\uff0c\u5e76\u5c06\u7ed3\u679c\u8f93\u51fa\u5230\u540c\u4e00\u4e2a\u5b57\u7b26\u4e32\u4e2d\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570round()<\/h3>\n<\/p>\n
Python\u7684\u5185\u7f6e\u51fd\u6570round()<\/code>\u4e5f\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002\u8be5\u51fd\u6570\u53ef\u4ee5\u5bf9\u6d6e\u70b9\u6570\u8fdb\u884c\u56db\u820d\u4e94\u5165\uff0c\u4fdd\u7559\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\u3002<\/p>\n<\/p>\n
2.1 \u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n
number = 3.14159<\/p>\n
rounded_number = round(number, 2)<\/p>\n
print(rounded_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cround()<\/code>\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u9700\u8981\u683c\u5f0f\u5316\u7684\u6d6e\u70b9\u6570\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u9700\u8981\u4fdd\u7559\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n
2.2 \u56db\u820d\u4e94\u5165\u89c4\u5219<\/h4>\n<\/p>\n
round()<\/code>\u51fd\u6570\u4f7f\u7528\u56db\u820d\u4e94\u5165\u89c4\u5219\u5bf9\u6d6e\u70b9\u6570\u8fdb\u884c\u5904\u7406\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u64cd\u4f5c\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n
number1 = 2.675<\/p>\n
number2 = 2.685<\/p>\n
rounded_number1 = round(number1, 2)<\/p>\n
rounded_number2 = round(number2, 2)<\/p>\n
print(rounded_number1)  # \u8f93\u51fa\uff1a2.67<\/p>\n
print(rounded_number2)  # \u8f93\u51fa\uff1a2.69<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cround()<\/code>\u51fd\u6570\u5bf9\u6d6e\u70b9\u6570\u8fdb\u884c\u4e86\u56db\u820d\u4e94\u5165\u5904\u7406\uff0c\u5e76\u4fdd\u7559\u4e86\u4e24\u4f4d\u5c0f\u6570\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528decimal\u6a21\u5757<\/h3>\n<\/p>\n
Python\u7684decimal<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7cbe\u5ea6\u7684\u6d6e\u70b9\u6570\u64cd\u4f5c\uff0c\u9002\u7528\u4e8e\u5bf9\u7cbe\u5ea6\u8981\u6c42\u8f83\u9ad8\u7684\u573a\u5408\u3002\u901a\u8fc7decimal<\/code>\u6a21\u5757\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n
3.1 \u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n
from decimal import Decimal, ROUND_HALF_UP<\/p>\n
number = Decimal('3.14159')<\/p>\n
formatted_number = number.quantize(Decimal('0.00'), rounding=ROUND_HALF_UP)<\/p>\n
print(formatted_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cDecimal<\/code>\u7c7b\u7528\u4e8e\u521b\u5efa\u9ad8\u7cbe\u5ea6\u7684\u6d6e\u70b9\u6570\u5bf9\u8c61\uff0cquantize()<\/code>\u65b9\u6cd5\u7528\u4e8e\u6307\u5b9a\u4fdd\u7559\u7684\u5c0f\u6570\u4f4d\u6570\u548c\u820d\u5165\u65b9\u5f0f\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5b9e\u73b0\u9ad8\u7cbe\u5ea6\u7684\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n
3.2 \u81ea\u5b9a\u4e49\u820d\u5165\u65b9\u5f0f<\/h4>\n<\/p>\n
decimal<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u591a\u79cd\u820d\u5165\u65b9\u5f0f\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u9009\u62e9\u5408\u9002\u7684\u820d\u5165\u65b9\u5f0f\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u64cd\u4f5c\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n
from decimal import Decimal, ROUND_DOWN<\/p>\n
number = Decimal('3.14159')<\/p>\n
formatted_number = number.quantize(Decimal('0.00'), rounding=ROUND_DOWN)<\/p>\n
print(formatted_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u901a\u8fc7\u6307\u5b9aROUND_DOWN<\/code>\u820d\u5165\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5411\u4e0b\u820d\u5165\u7684\u6548\u679c\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528format()\u51fd\u6570<\/h3>\n<\/p>\n
Python\u7684format()<\/code>\u51fd\u6570\u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u529f\u80fd\u3002\u901a\u8fc7\u4f7f\u7528format()<\/code>\u51fd\u6570\uff0c\u53ef\u4ee5\u5b9e\u73b0\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n
4.1 \u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n
number = 3.14159<\/p>\n
formatted_number = "{:.2f}".format(number)<\/p>\n
print(formatted_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c{:.2f}<\/code>\u4e2d\u7684:<\/code>\u8868\u793a\u683c\u5f0f\u5316\u64cd\u4f5c\uff0c.2<\/code>\u8868\u793a\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\uff0cf<\/code>\u8868\u793a\u6d6e\u70b9\u6570\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n
4.2 \u540c\u65f6\u683c\u5f0f\u5316\u591a\u4e2a\u6d6e\u70b9\u6570<\/h4>\n<\/p>\n
format()<\/code>\u51fd\u6570\u8fd8\u53ef\u4ee5\u540c\u65f6\u5904\u7406\u591a\u4e2a\u6d6e\u70b9\u6570\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u64cd\u4f5c\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n
number1 = 3.14159<\/p>\n
number2 = 2.71828<\/p>\n
formatted_numbers = "Number1: {:.2f}, Number2: {:.2f}".format(number1, number2)<\/p>\n
print(formatted_numbers)  # \u8f93\u51fa\uff1aNumber1: 3.14, Number2: 2.72<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u901a\u8fc7format()<\/code>\u51fd\u6570\u53ef\u4ee5\u540c\u65f6\u683c\u5f0f\u5316\u591a\u4e2a\u6d6e\u70b9\u6570\uff0c\u5e76\u5c06\u7ed3\u679c\u8f93\u51fa\u5230\u540c\u4e00\u4e2a\u5b57\u7b26\u4e32\u4e2d\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
Python\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u5b9e\u73b0\u8f93\u51fa\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570round()\u3001\u4f7f\u7528decimal\u6a21\u5757\u3001\u4f7f\u7528format()\u51fd\u6570\u3002\u5176\u4e2d\uff0c\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u548cformat()<\/code>\u51fd\u6570\u662f\u6700\u76f4\u89c2\u548c\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u4e00\u822c\u573a\u5408\uff1bround()<\/code>\u51fd\u6570\u9002\u7528\u4e8e\u5bf9\u7cbe\u5ea6\u8981\u6c42\u4e0d\u9ad8\u7684\u573a\u5408\uff1bdecimal<\/code>\u6a21\u5757\u9002\u7528\u4e8e\u5bf9\u7cbe\u5ea6\u8981\u6c42\u8f83\u9ad8\u7684\u573a\u5408\u3002\u901a\u8fc7\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u6d6e\u70b9\u6570\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u8f93\u51fa\u3002<\/strong><\/p>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u5728\u5904\u7406\u8d27\u5e01\u91d1\u989d\u65f6\uff0c\u901a\u5e38\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u6d6e\u70b9\u6570\u64cd\u4f5c\uff0c\u53ef\u4ee5\u9009\u62e9\u4f7f\u7528decimal<\/code>\u6a21\u5757\uff1b\u5728\u666e\u901a\u7684\u6570\u503c\u8ba1\u7b97\u573a\u5408\uff0c\u53ef\u4ee5\u9009\u62e9\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u6216format()<\/code>\u51fd\u6570\u3002\u901a\u8fc7\u7075\u6d3b\u8fd0\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u683c\u5f0f\u5316\u8f93\u51fa\u4e3a\u4e24\u4f4d\u5c0f\u6570\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u7684\u65b9\u6cd5\u6765\u63a7\u5236\u8f93\u51fa\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u6700\u5e38\u7528\u7684\u65b9\u5f0f\u662f\u4f7f\u7528format()<\/code>\u51fd\u6570\u6216\u8005f-string\u3002\u6bd4\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528"{:.2f}".format(value)<\/code>\u6765\u683c\u5f0f\u5316\u6570\u5b57\u4e3a\u4e24\u4f4d\u5c0f\u6570\uff0c\u6216\u8005\u5728Python 3.6\u53ca\u4ee5\u540e\u7684\u7248\u672c\u4e2d\uff0c\u4f7f\u7528f"{value:.2f}"<\/code>\u4e5f\u662f\u4e00\u4e2a\u7b80\u6d01\u7684\u65b9\u6cd5\u3002\u8fd9\u4e24\u79cd\u65b9\u5f0f\u90fd\u80fd\u786e\u4fdd\u8f93\u51fa\u7684\u6570\u5b57\u53ea\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u3002<\/p>\n
\u5728Python\u4e2d\u662f\u5426\u53ef\u4ee5\u901a\u8fc7\u56db\u820d\u4e94\u5165\u6765\u8f93\u51fa\u4e24\u4f4d\u5c0f\u6570\uff1f<\/strong>
\u662f\u7684\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684round()<\/code>\u51fd\u6570\u6765\u5b9e\u73b0\u56db\u820d\u4e94\u5165\u3002\u4f8b\u5982\uff0cround(value, 2)<\/code>\u4f1a\u5c06value<\/code>\u56db\u820d\u4e94\u5165\u5230\u4e24\u4f4d\u5c0f\u6570\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cround()<\/code>\u51fd\u6570\u8fd4\u56de\u7684\u662f\u6d6e\u70b9\u6570\uff0c\u5982\u679c\u9700\u8981\u683c\u5f0f\u5316\u4e3a\u5b57\u7b26\u4e32\u4ee5\u4fbf\u8f93\u51fa\uff0c\u53ef\u4ee5\u7ed3\u5408format()<\/code>\u51fd\u6570\u6216f-string\u4f7f\u7528\u3002<\/p>\n
\u4f7f\u7528Python\u7684Decimal\u6a21\u5757\u662f\u5426\u66f4\u9002\u5408\u5904\u7406\u5c0f\u6570\u8f93\u51fa\uff1f<\/strong>
\u5728\u9700\u8981\u9ad8\u7cbe\u5ea6\u548c\u63a7\u5236\u5c0f\u6570\u4f4d\u6570\u7684\u573a\u666f\u4e0b\uff0c\u4f7f\u7528Decimal<\/code>\u6a21\u5757\u662f\u4e00\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u3002Decimal<\/code>\u7c7b\u5141\u8bb8\u7528\u6237\u6307\u5b9a\u5c0f\u6570\u4f4d\u6570\u5e76\u8fdb\u884c\u7cbe\u786e\u7684\u56db\u820d\u4e94\u5165\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u901a\u8fc7from decimal import Decimal<\/code>\u5f15\u5165\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528Decimal(value).quantize(Decimal('0.00'))<\/code>\u6765\u786e\u4fdd\u8f93\u51fa\u4e3a\u4e24\u4f4d\u5c0f\u6570\u3002\u8fd9\u79cd\u65b9\u5f0f\u5728\u91d1\u878d\u8ba1\u7b97\u7b49\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u573a\u5408\u5c24\u5176\u6709\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u8bbe\u7f6e\u8f93\u51fa\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570round()\u3001\u4f7f […]","protected":false},"author":3,"featured_media":1112023,"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\/1112018"}],"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=1112018"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1112018\/revisions"}],"predecessor-version":[{"id":1112024,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1112018\/revisions\/1112024"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1112023"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1112018"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1112018"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1112018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}