{"id":969191,"date":"2024-12-27T05:14:25","date_gmt":"2024-12-26T21:14:25","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/969191.html"},"modified":"2024-12-27T05:14:27","modified_gmt":"2024-12-26T21:14:27","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8sum","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/969191.html","title":{"rendered":"python\u4e2d\u5982\u4f55\u4f7f\u7528sum"},"content":{"rendered":"

\"python\u4e2d\u5982\u4f55\u4f7f\u7528sum\"<\/p>\n

\u5728Python\u4e2d\uff0c\u4f7f\u7528sum<\/code>\u51fd\u6570\u6765\u8ba1\u7b97\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\u4e2d\u5143\u7d20\u7684\u603b\u548c<\/strong>\u3002sum<\/code>\u51fd\u6570\u662fPython\u7684\u5185\u7f6e\u51fd\u6570\uff0c\u80fd\u591f\u65b9\u4fbf\u5730\u5bf9\u5217\u8868\u3001\u5143\u7ec4\u6216\u5176\u4ed6\u53ef\u8fed\u4ee3\u5bf9\u8c61\u4e2d\u7684\u6570\u503c\u8fdb\u884c\u6c42\u548c\u64cd\u4f5c\u3002\u5176\u57fa\u672c\u7528\u6cd5\u662fsum(iterable, start=0)<\/code><\/strong>\uff0c\u5176\u4e2diterable<\/code>\u662f\u8981\u6c42\u548c\u7684\u5bf9\u8c61\uff0cstart<\/code>\u662f\u4e00\u4e2a\u53ef\u9009\u53c2\u6570\uff0c\u6307\u5b9a\u6c42\u548c\u7684\u8d77\u59cb\u503c\uff0c\u9ed8\u8ba4\u4e3a0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528sum<\/code>\u51fd\u6570\u7684\u5e38\u89c1\u573a\u666f\u548c\u6280\u5de7\u3002<\/p>\n<\/p>\n

\u4e00\u3001SUM \u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n

Python\u4e2dsum<\/code>\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5\u662f\u975e\u5e38\u7b80\u5355\u7684\u3002\u4f60\u53ea\u9700\u8981\u5c06\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\u4f20\u9012\u7ed9sum<\/code>\u51fd\u6570\uff0c\u5b83\u5c31\u4f1a\u8fd4\u56de\u8be5\u5bf9\u8c61\u4e2d\u6240\u6709\u5143\u7d20\u7684\u548c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n<\/p>\n

numbers = [1, 2, 3, 4, 5]<\/p>\n
total = sum(numbers)<\/p>\n
print(total)  # \u8f93\u51fa\uff1a15<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u6b64\u793a\u4f8b\u4e2d\uff0csum<\/code>\u51fd\u6570\u5bf9\u5217\u8868numbers<\/code>\u4e2d\u7684\u6240\u6709\u5143\u7d20\u8fdb\u884c\u6c42\u548c\uff0c\u8fd4\u56de\u503c\u4e3a15\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528 START \u53c2\u6570<\/h3>\n<\/p>\n
sum<\/code>\u51fd\u6570\u63d0\u4f9b\u4e86\u4e00\u4e2a\u53ef\u9009\u7684start<\/code>\u53c2\u6570\uff0c\u7528\u4e8e\u6307\u5b9a\u6c42\u548c\u7684\u8d77\u59cb\u503c\u3002\u8fd9\u4e2a\u53c2\u6570\u5728\u4f60\u9700\u8981\u5c06\u67d0\u4e2a\u56fa\u5b9a\u503c\u52a0\u5230\u603b\u548c\u4e2d\u7684\u60c5\u51b5\u4e0b\u975e\u5e38\u6709\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
numbers = [1, 2, 3, 4, 5]<\/p>\n
total = sum(numbers, 10)<\/p>\n
print(total)  # \u8f93\u51fa\uff1a25<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0csum<\/code>\u51fd\u6570\u4e0d\u4ec5\u5bf9\u5217\u8868numbers<\/code>\u4e2d\u7684\u5143\u7d20\u6c42\u548c\uff0c\u8fd8\u52a0\u4e0a\u4e86start<\/code>\u53c2\u6570\u7684\u503c10\u3002\u56e0\u6b64\uff0c\u603b\u548c\u4e3a25\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u5904\u7406\u4e0d\u540c\u7c7b\u578b\u7684\u53ef\u8fed\u4ee3\u5bf9\u8c61<\/h3>\n<\/p>\n
sum<\/code>\u51fd\u6570\u53ef\u4ee5\u5904\u7406\u5404\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0c\u5305\u62ec\u5143\u7ec4\u3001\u5217\u8868\u751f\u6210\u5668\u7b49\u3002\u8fd9\u4f7f\u5f97\u5b83\u5728\u5904\u7406\u6570\u636e\u65f6\u975e\u5e38\u7075\u6d3b\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u751f\u6210\u5668\u8868\u8fbe\u5f0f\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
total = sum(x * x for x in range(1, 6))<\/p>\n
print(total)  # \u8f93\u51fa\uff1a55<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0csum<\/code>\u51fd\u6570\u5bf9\u4ece1\u52305\u7684\u6240\u6709\u6574\u6570\u7684\u5e73\u65b9\u6c42\u548c\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4e0e\u5176\u4ed6\u51fd\u6570\u7ed3\u5408\u4f7f\u7528<\/h3>\n<\/p>\n
sum<\/code>\u51fd\u6570\u53ef\u4ee5\u4e0ePython\u4e2d\u7684\u5176\u4ed6\u51fd\u6570\u7ed3\u5408\u4f7f\u7528\uff0c\u4ee5\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u6570\u636e\u5904\u7406\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528map<\/code>\u51fd\u6570\u6765\u5bf9\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u8fdb\u884c\u67d0\u79cd\u64cd\u4f5c\uff0c\u7136\u540e\u5bf9\u7ed3\u679c\u8fdb\u884c\u6c42\u548c\uff1a<\/p>\n<\/p>\n
numbers = [1, 2, 3, 4, 5]<\/p>\n
total = sum(map(lambda x: x * 2, numbers))<\/p>\n
print(total)  # \u8f93\u51fa\uff1a30<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cmap<\/code>\u51fd\u6570\u5c06\u5217\u8868numbers<\/code>\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u4e58\u4ee52\uff0c\u7136\u540esum<\/code>\u51fd\u6570\u5bf9\u7ed3\u679c\u6c42\u548c\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u5904\u7406\u591a\u7ef4\u6570\u7ec4<\/h3>\n<\/p>\n
\u5728\u5904\u7406\u591a\u7ef4\u6570\u7ec4\uff08\u5982\u5217\u8868\u7684\u5217\u8868\uff09\u65f6\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u5bf9\u5185\u90e8\u5217\u8868\u8fdb\u884c\u6c42\u548c\u3002\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\uff1a<\/p>\n<\/p>\n
matrix = [<\/p>\n
    [1, 2, 3],<\/p>\n
    [4, 5, 6],<\/p>\n
    [7, 8, 9]<\/p>\n
]<\/p>\n
total = sum(sum(row) for row in matrix)<\/p>\n
print(total)  # \u8f93\u51fa\uff1a45<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0csum<\/code>\u51fd\u6570\u9996\u5148\u5bf9\u6bcf\u4e00\u884c\u8fdb\u884c\u6c42\u548c\uff0c\u7136\u540e\u5bf9\u6240\u6709\u884c\u7684\u603b\u548c\u6c42\u548c\u3002<\/p>\n<\/p>\n
\u516d\u3001\u6027\u80fd\u8003\u8651<\/h3>\n<\/p>\n
\u867d\u7136sum<\/code>\u51fd\u6570\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u8fd0\u884c\u5f97\u975e\u5e38\u5feb\uff0c\u4f46\u5728\u5904\u7406\u975e\u5e38\u5927\u7684\u6570\u636e\u96c6\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u8003\u8651\u6027\u80fd\u95ee\u9898\u3002sum<\/code>\u51fd\u6570\u662f\u4e00\u4e2a\u9010\u4e00\u7d2f\u52a0\u7684\u8fc7\u7a0b\uff0c\u5904\u7406\u5927\u91cf\u6570\u636e\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u4e00\u4e9b\u65f6\u95f4\u3002\u5bf9\u4e8e\u5927\u6570\u636e\u96c6\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528NumPy\u5e93\u4e2d\u7684sum<\/code>\u51fd\u6570\uff0c\u8be5\u5e93\u4e13\u4e3a\u5904\u7406\u5927\u6570\u636e\u548c\u6570\u7ec4\u8fd0\u7b97\u8fdb\u884c\u4e86\u4f18\u5316\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u4f7f\u7528 NUMPY \u8fdb\u884c\u4f18\u5316<\/h3>\n<\/p>\n
\u5bf9\u4e8e\u66f4\u5927\u89c4\u6a21\u7684\u6570\u636e\u96c6\uff0cNumPy<\/code>\u5e93\u63d0\u4f9b\u4e86\u4e00\u4e2a\u66f4\u9ad8\u6548\u7684sum<\/code>\u51fd\u6570\u3002NumPy<\/code>\u7684sum<\/code>\u51fd\u6570\u53ef\u4ee5\u5904\u7406\u591a\u7ef4\u6570\u7ec4\uff0c\u5e76\u4e14\u901a\u5e38\u6bd4\u5185\u7f6e\u7684sum<\/code>\u51fd\u6570\u66f4\u5feb\u3002<\/p>\n<\/p>\n
import numpy as np<\/p>\n
array = np.array([1, 2, 3, 4, 5])<\/p>\n
total = np.sum(array)<\/p>\n
print(total)  # \u8f93\u51fa\uff1a15<\/p>\n
<\/code><\/pre>\n<\/p>\n
NumPy<\/code>\u7684sum<\/code>\u51fd\u6570\u4e0d\u4ec5\u66f4\u5feb\uff0c\u800c\u4e14\u8fd8\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u529f\u80fd\uff0c\u4f8b\u5982\u6cbf\u6307\u5b9a\u7684\u8f74\u8fdb\u884c\u6c42\u548c\u3002<\/p>\n<\/p>\n
\u516b\u3001\u5e38\u89c1\u9519\u8bef\u4e0e\u8c03\u8bd5<\/h3>\n<\/p>\n
\u5728\u4f7f\u7528sum<\/code>\u51fd\u6570\u65f6\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u4e00\u4e9b\u5e38\u89c1\u9519\u8bef\u3002\u4f8b\u5982\uff0c\u5c1d\u8bd5\u5bf9\u975e\u6570\u5b57\u5143\u7d20\u6c42\u548c\u4f1a\u5bfc\u81f4\u9519\u8bef\uff1a<\/p>\n<\/p>\n
numbers = [1, 'two', 3]<\/p>\n
try:<\/p>\n
    total = sum(numbers)<\/p>\n
except TypeError as e:<\/p>\n
    print(f"Error: {e}")  # \u8f93\u51fa\uff1aError: unsupported operand type(s) for +: 'int' and 'str'<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e3a\u907f\u514d\u6b64\u7c7b\u9519\u8bef\uff0c\u5728\u8fdb\u884c\u6c42\u548c\u64cd\u4f5c\u524d\uff0c\u786e\u4fdd\u6240\u6709\u5143\u7d20\u90fd\u662f\u6570\u503c\u7c7b\u578b\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
Python\u7684sum<\/code>\u51fd\u6570\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u80fd\u591f\u7b80\u5316\u5f88\u591a\u5e38\u89c1\u7684\u6570\u636e\u5904\u7406\u4efb\u52a1\u3002\u901a\u8fc7\u7406\u89e3sum<\/code>\u51fd\u6570\u7684\u7528\u6cd5\u3001start<\/code>\u53c2\u6570\u7684\u4f5c\u7528\u4ee5\u53ca\u5982\u4f55\u4e0e\u5176\u4ed6\u51fd\u6570\u7ed3\u5408\u4f7f\u7528<\/strong>\uff0c\u53ef\u4ee5\u66f4\u9ad8\u6548\u5730\u5904\u7406\u5404\u79cd\u6570\u636e\u96c6\u3002\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u65f6\uff0c\u8003\u8651\u4f7f\u7528NumPy<\/code>\u7b49\u4f18\u5316\u5e93\uff0c\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<\/p>\n
\u901a\u8fc7\u638c\u63e1\u4ee5\u4e0a\u6280\u5de7\u548c\u6ce8\u610f\u4e8b\u9879\uff0c\u4f60\u53ef\u4ee5\u5728\u5404\u79cd\u573a\u666f\u4e0b\u6709\u6548\u5730\u4f7f\u7528sum<\/code>\u51fd\u6570\uff0c\u4ece\u800c\u63d0\u9ad8Python\u7f16\u7a0b\u7684\u6548\u7387\u548c\u80fd\u529b\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5728Python\u4e2d\uff0csum\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5\u662f\u4ec0\u4e48\uff1f<\/strong>
sum\u51fd\u6570\u662fPython\u5185\u7f6e\u7684\u4e00\u4e2a\u51fd\u6570\uff0c\u7528\u4e8e\u8ba1\u7b97\u53ef\u8fed\u4ee3\u5bf9\u8c61\u4e2d\u6240\u6709\u5143\u7d20\u7684\u603b\u548c\u3002\u5b83\u7684\u57fa\u672c\u8bed\u6cd5\u4e3asum(iterable, start)<\/code>\uff0c\u5176\u4e2diterable<\/code>\u662f\u8981\u8ba1\u7b97\u7684\u5bf9\u8c61\uff08\u5982\u5217\u8868\u3001\u5143\u7ec4\u7b49\uff09\uff0c\u800cstart<\/code>\u662f\u53ef\u9009\u7684\u521d\u59cb\u503c\uff0c\u9ed8\u8ba4\u4e3a0\u3002\u4f8b\u5982\uff0c\u4f7f\u7528sum([1, 2, 3])<\/code>\u4f1a\u8fd4\u56de6\u3002<\/p>\n
\u53ef\u4ee5\u7528sum\u51fd\u6570\u8ba1\u7b97\u54ea\u4e9b\u7c7b\u578b\u7684\u6570\u503c\uff1f<\/strong>
sum\u51fd\u6570\u53ef\u4ee5\u5904\u7406\u591a\u79cd\u6570\u503c\u7c7b\u578b\uff0c\u5305\u62ec\u6574\u6570\u548c\u6d6e\u70b9\u6570\u3002\u4f60\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u6570\u503c\u5b58\u50a8\u5728\u5217\u8868\u3001\u5143\u7ec4\u6216\u5176\u4ed6\u53ef\u8fed\u4ee3\u5bf9\u8c61\u4e2d\u3002\u5982\u679c\u4f60\u7684\u6570\u636e\u4e2d\u5305\u542b\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u503c\uff08\u5982\u6574\u6570\u548c\u6d6e\u70b9\u6570\uff09\uff0csum\u51fd\u6570\u4e5f\u80fd\u6b63\u5e38\u5de5\u4f5c\uff0c\u8fd4\u56de\u7ed3\u679c\u4e3a\u6d6e\u70b9\u6570\u3002<\/p>\n
\u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528sum\u51fd\u6570\u5904\u7406\u5d4c\u5957\u5217\u8868\uff1f<\/strong>
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