{"id":991737,"date":"2024-12-27T08:31:36","date_gmt":"2024-12-27T00:31:36","guid":{"rendered":""},"modified":"2024-12-27T08:31:39","modified_gmt":"2024-12-27T00:31:39","slug":"python%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%ad%e7%8e%af%e5%bc%95%e7%94%a8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/991737.html","title":{"rendered":"Python\u5982\u4f55\u5224\u65ad\u73af\u5f15\u7528"},"content":{"rendered":"

\"Python\u5982\u4f55\u5224\u65ad\u73af\u5f15\u7528\"<\/p>\n

\u5728Python\u4e2d\u5224\u65ad\u73af\u5f15\u7528\uff0c\u53ef\u4ee5\u901a\u8fc7\u5f15\u7528\u8ba1\u6570\u3001\u5783\u573e\u56de\u6536\u5668\u68c0\u6d4b\u3001\u5f31\u5f15\u7528\u673a\u5236\u7b49\u65b9\u6cd5\u3002\u5f15\u7528\u8ba1\u6570\u662f\u901a\u8fc7\u8bb0\u5f55\u5bf9\u8c61\u88ab\u5f15\u7528\u7684\u6b21\u6570\u6765\u5224\u65ad\u662f\u5426\u53ef\u4ee5\u56de\u6536\uff0c\u5783\u573e\u56de\u6536\u5668\u5219\u81ea\u52a8\u68c0\u6d4b\u548c\u56de\u6536\u4e0d\u53ef\u8fbe\u5bf9\u8c61\uff0c\u800c\u5f31\u5f15\u7528\u673a\u5236\u5219\u53ef\u4ee5\u907f\u514d\u521b\u5efa\u73af\u5f15\u7528\u3002<\/strong><\/p>\n<\/p>\n

\u5f15\u7528\u8ba1\u6570\u662fPython\u5185\u5b58\u7ba1\u7406\u7684\u4e00\u90e8\u5206\uff0c\u5b83\u901a\u8fc7\u8bb0\u5f55\u6bcf\u4e2a\u5bf9\u8c61\u7684\u5f15\u7528\u6b21\u6570\u6765\u51b3\u5b9a\u4f55\u65f6\u56de\u6536\u5185\u5b58\u3002\u5f53\u4e00\u4e2a\u5bf9\u8c61\u7684\u5f15\u7528\u8ba1\u6570\u53d8\u4e3a\u96f6\u65f6\uff0c\u8be5\u5bf9\u8c61\u7684\u5185\u5b58\u4f1a\u88ab\u91ca\u653e\u3002\u7136\u800c\uff0c\u5f15\u7528\u8ba1\u6570\u65e0\u6cd5\u5904\u7406\u73af\u5f15\u7528\u7684\u95ee\u9898\uff0c\u56e0\u4e3a\u5373\u4f7f\u5bf9\u8c61\u4e92\u76f8\u5f15\u7528\uff0c\u5f15\u7528\u8ba1\u6570\u4e0d\u4f1a\u53d8\u4e3a\u96f6\uff0c\u8fd9\u65f6\u5c31\u9700\u8981\u5783\u573e\u56de\u6536\u5668\u6765\u89e3\u51b3\u3002<\/p>\n<\/p>\n

\u5783\u573e\u56de\u6536\u5668\u662fPython\u5185\u5b58\u7ba1\u7406\u7684\u53e6\u4e00\u4e2a\u91cd\u8981\u90e8\u5206\u3002Python\u7684\u5783\u573e\u56de\u6536\u5668\u53ef\u4ee5\u68c0\u6d4b\u548c\u56de\u6536\u73af\u5f15\u7528\u3002\u5f53\u5783\u573e\u56de\u6536\u5668\u68c0\u6d4b\u5230\u4e00\u7ec4\u5bf9\u8c61\u4e4b\u95f4\u5b58\u5728\u73af\u5f15\u7528\u4e14\u8fd9\u4e9b\u5bf9\u8c61\u4e0d\u518d\u88ab\u5176\u4ed6\u5bf9\u8c61\u5f15\u7528\u65f6\uff0c\u5b83\u4f1a\u5c06\u8fd9\u4e9b\u5bf9\u8c61\u6807\u8bb0\u4e3a\u53ef\u56de\u6536\u72b6\u6001\uff0c\u5e76\u91ca\u653e\u5176\u5185\u5b58\u3002Python\u7684\u5783\u573e\u56de\u6536\u5668\u4f7f\u7528\u5206\u4ee3\u6536\u96c6\u7b97\u6cd5\uff0c\u5b9a\u671f\u626b\u63cf\u5bf9\u8c61\u56fe\u4ee5\u53d1\u73b0\u548c\u6e05\u7406\u73af\u5f15\u7528\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u5f15\u7528\u8ba1\u6570<\/h3>\n<\/p>\n

\u5f15\u7528\u8ba1\u6570\u662fPython\u5185\u5b58\u7ba1\u7406\u7684\u57fa\u672c\u673a\u5236\u3002\u6bcf\u4e2a\u5bf9\u8c61\u90fd\u6709\u4e00\u4e2a\u5f15\u7528\u8ba1\u6570\u5668\uff0c\u8bb0\u5f55\u7740\u88ab\u591a\u5c11\u4e2a\u5bf9\u8c61\u5f15\u7528\u3002\u5f53\u5f15\u7528\u8ba1\u6570\u53d8\u4e3a\u96f6\u65f6\uff0cPython\u89e3\u91ca\u5668\u4f1a\u7acb\u5373\u56de\u6536\u8be5\u5bf9\u8c61\u7684\u5185\u5b58\u3002<\/p>\n<\/p>\n

1.\u5f15\u7528\u8ba1\u6570\u7684\u4f18\u7f3a\u70b9<\/h4>\n<\/p>\n

\u5f15\u7528\u8ba1\u6570\u7684\u4f18\u70b9\u5728\u4e8e\u5b83\u53ef\u4ee5\u5feb\u901f\u91ca\u653e\u4e0d\u518d\u9700\u8981\u7684\u5bf9\u8c61\uff0c\u56e0\u4e3a\u53ea\u8981\u5f15\u7528\u8ba1\u6570\u4e3a\u96f6\uff0c\u5185\u5b58\u5c31\u4f1a\u88ab\u7acb\u5373\u56de\u6536\u3002\u7136\u800c\uff0c\u5b83\u7684\u7f3a\u70b9\u5728\u4e8e\u65e0\u6cd5\u5904\u7406\u73af\u5f15\u7528\u3002\u5f53\u4e24\u4e2a\u6216\u591a\u4e2a\u5bf9\u8c61\u4e92\u76f8\u5f15\u7528\u65f6\uff0c\u5373\u4f7f\u5b83\u4eec\u4e0d\u518d\u88ab\u7a0b\u5e8f\u4f7f\u7528\uff0c\u5b83\u4eec\u7684\u5f15\u7528\u8ba1\u6570\u4e5f\u4e0d\u4f1a\u53d8\u4e3a\u96f6\uff0c\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\u3002<\/p>\n<\/p>\n

class Node:<\/p>\n
    def __init__(self, value):<\/p>\n
        self.value = value<\/p>\n
        self.next = None<\/p>\n
a = Node(1)<\/p>\n
b = Node(2)<\/p>\n
a.next = b<\/p>\n
b.next = a<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0ca<\/code>\u548cb<\/code>\u4e92\u76f8\u5f15\u7528\uff0c\u5f62\u6210\u4e00\u4e2a\u73af\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5f15\u7528\u8ba1\u6570\u65e0\u6cd5\u8bc6\u522b\u8fd9\u4e9b\u5bf9\u8c61\u53ef\u4ee5\u88ab\u56de\u6536\u3002<\/p>\n<\/p>\n
2.\u5982\u4f55\u67e5\u770b\u5f15\u7528\u8ba1\u6570<\/h4>\n<\/p>\n
Python\u63d0\u4f9b\u4e86sys<\/code>\u6a21\u5757\u4e2d\u7684getrefcount<\/code>\u51fd\u6570\uff0c\u53ef\u4ee5\u7528\u6765\u67e5\u770b\u5bf9\u8c61\u7684\u5f15\u7528\u8ba1\u6570\u3002<\/p>\n<\/p>\n
import sys<\/p>\n
x = []<\/p>\n
print(sys.getrefcount(x))  # \u8f93\u51fa\u4e3a2\uff0c\u56e0\u4e3agetrefcount\u51fd\u6570\u4f1a\u4e34\u65f6\u521b\u5efa\u4e00\u4e2a\u5f15\u7528<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u5783\u573e\u56de\u6536\u5668<\/h3>\n<\/p>\n
\u4e3a\u4e86\u5904\u7406\u73af\u5f15\u7528\uff0cPython\u5f15\u5165\u4e86\u5783\u573e\u56de\u6536\u5668\u3002Python\u7684\u5783\u573e\u56de\u6536\u5668\u4f7f\u7528\u201c\u5206\u4ee3\u6536\u96c6\u201d\u7b97\u6cd5\uff0c\u81ea\u52a8\u68c0\u6d4b\u548c\u56de\u6536\u73af\u5f15\u7528\u3002<\/p>\n<\/p>\n
1.\u5206\u4ee3\u6536\u96c6\u7b97\u6cd5<\/h4>\n<\/p>\n
Python\u7684\u5783\u573e\u56de\u6536\u5668\u5c06\u5185\u5b58\u5206\u4e3a\u4e09\u4ee3\uff1a\u5e74\u8f7b\u4ee3\u3001\u4e2d\u751f\u4ee3\u548c\u8001\u5e74\u4ee3\u3002\u5bf9\u8c61\u6839\u636e\u5176\u5b58\u6d3b\u65f6\u95f4\u88ab\u5212\u5206\u5230\u4e0d\u540c\u7684\u4ee3\u4e2d\u3002\u5e74\u8f7b\u4ee3\u4e2d\u7684\u5bf9\u8c61\u5b58\u6d3b\u65f6\u95f4\u8f83\u77ed\uff0c\u8001\u5e74\u4ee3\u4e2d\u7684\u5bf9\u8c61\u5b58\u6d3b\u65f6\u95f4\u8f83\u957f\u3002\u5783\u573e\u56de\u6536\u5668\u4f1a\u9891\u7e41\u5730\u68c0\u67e5\u5e74\u8f7b\u4ee3\u4e2d\u7684\u5bf9\u8c61\uff0c\u800c\u8f83\u5c11\u68c0\u67e5\u8001\u5e74\u4ee3\u4e2d\u7684\u5bf9\u8c61\u3002<\/p>\n<\/p>\n
\u8fd9\u79cd\u7b56\u7565\u7684\u4f18\u70b9\u5728\u4e8e\u5927\u591a\u6570\u5bf9\u8c61\u90fd\u5728\u5e74\u8f7b\u4ee3\u4e2d\u88ab\u56de\u6536\uff0c\u56e0\u4e3a\u7a0b\u5e8f\u4e2d\u521b\u5efa\u7684\u5bf9\u8c61\u5927\u591a\u662f\u77ed\u547d\u7684\u3002\u901a\u8fc7\u51cf\u5c11\u5bf9\u8001\u5e74\u4ee3\u7684\u626b\u63cf\u9891\u7387\uff0c\u63d0\u9ad8\u4e86\u5783\u573e\u56de\u6536\u7684\u6548\u7387\u3002<\/p>\n<\/p>\n
2.\u5783\u573e\u56de\u6536\u5668\u7684\u8fd0\u884c<\/h4>\n<\/p>\n
\u5783\u573e\u56de\u6536\u5668\u4f1a\u5b9a\u671f\u626b\u63cf\u5bf9\u8c61\u56fe\uff0c\u4ee5\u68c0\u6d4b\u4e0d\u53ef\u8fbe\u5bf9\u8c61\u3002\u5f53\u53d1\u73b0\u4e00\u7ec4\u5bf9\u8c61\u4e4b\u95f4\u5b58\u5728\u73af\u5f15\u7528\u4e14\u8fd9\u4e9b\u5bf9\u8c61\u4e0d\u518d\u88ab\u5176\u4ed6\u5bf9\u8c61\u5f15\u7528\u65f6\uff0c\u5b83\u4f1a\u5c06\u8fd9\u4e9b\u5bf9\u8c61\u6807\u8bb0\u4e3a\u53ef\u56de\u6536\u72b6\u6001\uff0c\u5e76\u91ca\u653e\u5176\u5185\u5b58\u3002<\/p>\n<\/p>\n
import gc<\/p>\n
gc.collect()  # \u624b\u52a8\u89e6\u53d1\u5783\u573e\u56de\u6536<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u8c03\u7528gc.collect()<\/code>\u53ef\u4ee5\u624b\u52a8\u89e6\u53d1\u5783\u573e\u56de\u6536\uff0c\u901a\u5e38\u4e0d\u9700\u8981\u624b\u52a8\u8c03\u7528\uff0c\u56e0\u4e3aPython\u4f1a\u81ea\u52a8\u7ba1\u7406\u5185\u5b58\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u5f31\u5f15\u7528\u673a\u5236<\/h3>\n<\/p>\n
\u5f31\u5f15\u7528\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u5f15\u7528\uff0c\u4e0d\u4f1a\u589e\u52a0\u5bf9\u8c61\u7684\u5f15\u7528\u8ba1\u6570\u3002\u901a\u8fc7\u4f7f\u7528\u5f31\u5f15\u7528\uff0c\u53ef\u4ee5\u907f\u514d\u73af\u5f15\u7528\u3002<\/p>\n<\/p>\n
1.weakref\u6a21\u5757<\/h4>\n<\/p>\n
Python\u7684weakref<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u521b\u5efa\u5f31\u5f15\u7528\u7684\u65b9\u6cd5\u3002\u5f31\u5f15\u7528\u5141\u8bb8\u4f60\u5f15\u7528\u4e00\u4e2a\u5bf9\u8c61\u800c\u4e0d\u589e\u52a0\u5176\u5f15\u7528\u8ba1\u6570\u3002\u5f53\u5bf9\u8c61\u88ab\u56de\u6536\u65f6\uff0c\u5f31\u5f15\u7528\u4f1a\u81ea\u52a8\u53d8\u4e3aNone<\/code>\u3002<\/p>\n<\/p>\n
import weakref<\/p>\n
class Node:<\/p>\n
    def __init__(self, value):<\/p>\n
        self.value = value<\/p>\n
        self.next = None<\/p>\n
a = Node(1)<\/p>\n
b = Node(2)<\/p>\n
a.next = weakref.ref(b)  # \u4f7f\u7528\u5f31\u5f15\u7528<\/p>\n
print(a.next())  # \u8f93\u51fab\u5bf9\u8c61<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0ca.next<\/code>\u4f7f\u7528\u5f31\u5f15\u7528\u6307\u5411b<\/code>\u5bf9\u8c61\u3002\u5373\u4f7f\u5b58\u5728\u73af\u5f15\u7528\uff0cb<\/code>\u5bf9\u8c61\u7684\u5f15\u7528\u8ba1\u6570\u4e0d\u4f1a\u589e\u52a0\uff0c\u5783\u573e\u56de\u6536\u5668\u53ef\u4ee5\u6b63\u786e\u56de\u6536\u5b83\u3002<\/p>\n<\/p>\n
2.\u5f31\u5f15\u7528\u7684\u5e94\u7528\u573a\u666f<\/h4>\n<\/p>\n
\u5f31\u5f15\u7528\u9002\u7528\u4e8e\u7f13\u5b58\u3001\u4e8b\u4ef6\u76d1\u542c\u7b49\u573a\u666f\u3002\u5728\u8fd9\u4e9b\u573a\u666f\u4e2d\uff0c\u5e94\u7528\u4e0d\u5e0c\u671b\u5bf9\u8c61\u88ab\u5f3a\u5f15\u7528\u800c\u65e0\u6cd5\u56de\u6536\uff0c\u901a\u8fc7\u4f7f\u7528\u5f31\u5f15\u7528\u53ef\u4ee5\u6709\u6548\u7ba1\u7406\u5185\u5b58\u3002<\/p>\n<\/p>\n
\u56db\u3001\u907f\u514d\u73af\u5f15\u7528\u7684\u65b9\u6cd5<\/h3>\n<\/p>\n
\u5c3d\u7ba1Python\u7684\u5783\u573e\u56de\u6536\u5668\u53ef\u4ee5\u5904\u7406\u73af\u5f15\u7528\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u907f\u514d\u73af\u5f15\u7528\u4ecd\u7136\u662f\u4e00\u4e2a\u597d\u7684\u5b9e\u8df5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u907f\u514d\u73af\u5f15\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n
1.\u4f7f\u7528\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668<\/h4>\n<\/p>\n
\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u53ef\u4ee5\u786e\u4fdd\u5bf9\u8c61\u5728\u4e0d\u518d\u9700\u8981\u65f6\u88ab\u6b63\u786e\u91ca\u653e\u3002\u901a\u8fc7\u4f7f\u7528with<\/code>\u8bed\u53e5\uff0c\u53ef\u4ee5\u907f\u514d\u624b\u52a8\u7ba1\u7406\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u3002<\/p>\n<\/p>\n
with open('file.txt', 'r') as file:<\/p>\n
    content = file.read()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cfile<\/code>\u5bf9\u8c61\u4f1a\u5728with<\/code>\u8bed\u53e5\u5757\u7ed3\u675f\u540e\u81ea\u52a8\u5173\u95ed\uff0c\u907f\u514d\u4e86\u8d44\u6e90\u6cc4\u6f0f\u3002<\/p>\n<\/p>\n
2.\u8bbe\u8ba1\u826f\u597d\u7684\u6570\u636e\u7ed3\u6784<\/h4>\n<\/p>\n
\u5728\u8bbe\u8ba1\u6570\u636e\u7ed3\u6784\u65f6\uff0c\u5c3d\u91cf\u907f\u514d\u521b\u5efa\u73af\u5f15\u7528\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u6811\u7ed3\u6784\u4ee3\u66ff\u56fe\u7ed3\u6784\uff0c\u6216\u4f7f\u7528\u5f31\u5f15\u7528\u6765\u6253\u7834\u73af\u3002<\/p>\n<\/p>\n
class TreeNode:<\/p>\n
    def __init__(self, value):<\/p>\n
        self.value = value<\/p>\n
        self.children = []<\/p>\n
root = TreeNode(1)<\/p>\n
child = TreeNode(2)<\/p>\n
root.children.append(child)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6811\u8282\u70b9\u6ca1\u6709\u5f15\u7528\u7236\u8282\u70b9\uff0c\u907f\u514d\u4e86\u73af\u5f15\u7528\u3002<\/p>\n<\/p>\n
3.\u624b\u52a8\u6253\u7834\u73af\u5f15\u7528<\/h4>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u901a\u8fc7\u624b\u52a8\u89e3\u9664\u5bf9\u8c61\u4e4b\u95f4\u7684\u5f15\u7528\u6765\u6253\u7834\u73af\u3002<\/p>\n<\/p>\n
a.next = None  # \u624b\u52a8\u89e3\u9664\u5f15\u7528<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u624b\u52a8\u89e3\u9664\u5f15\u7528\uff0c\u53ef\u4ee5\u786e\u4fdd\u5bf9\u8c61\u7684\u5f15\u7528\u8ba1\u6570\u53d8\u4e3a\u96f6\uff0c\u4ece\u800c\u88ab\u6b63\u786e\u56de\u6536\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u76d1\u63a7\u548c\u8c03\u8bd5\u73af\u5f15\u7528<\/h3>\n<\/p>\n
\u5728\u5f00\u53d1\u548c\u8c03\u8bd5\u8fc7\u7a0b\u4e2d\uff0c\u76d1\u63a7\u548c\u68c0\u6d4b\u73af\u5f15\u7528\u662f\u786e\u4fdd\u5185\u5b58\u7ba1\u7406\u6b63\u786e\u7684\u91cd\u8981\u6b65\u9aa4\u3002<\/p>\n<\/p>\n
1.\u4f7f\u7528gc\u6a21\u5757\u8c03\u8bd5<\/h4>\n<\/p>\n
Python\u7684gc<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u591a\u79cd\u8c03\u8bd5\u529f\u80fd\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u8bc6\u522b\u548c\u89e3\u51b3\u73af\u5f15\u7528\u95ee\u9898\u3002<\/p>\n<\/p>\n
import gc<\/p>\n
gc.set_debug(gc.DEBUG_LEAK)  # \u542f\u7528\u6cc4\u6f0f\u8c03\u8bd5<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u542f\u7528\u6cc4\u6f0f\u8c03\u8bd5\uff0c\u5783\u573e\u56de\u6536\u5668\u4f1a\u8f93\u51fa\u5173\u4e8e\u65e0\u6cd5\u56de\u6536\u7684\u5bf9\u8c61\u7684\u4fe1\u606f\u3002<\/p>\n<\/p>\n
2.\u4f7f\u7528\u5de5\u5177\u76d1\u63a7\u5185\u5b58<\/h4>\n<\/p>\n
\u6709\u591a\u79cd\u5de5\u5177\u53ef\u4ee5\u7528\u4e8e\u76d1\u63a7Python\u7a0b\u5e8f\u7684\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\uff0c\u4f8b\u5982objgraph<\/code>\u5e93\u3002objgraph<\/code>\u53ef\u4ee5\u53ef\u89c6\u5316\u5bf9\u8c61\u5f15\u7528\u56fe\uff0c\u5e2e\u52a9\u8bc6\u522b\u73af\u5f15\u7528\u3002<\/p>\n<\/p>\n
import objgraph<\/p>\n
objgraph.show_backrefs([a], filename='graph.png')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u751f\u6210\u5bf9\u8c61\u5f15\u7528\u56fe\uff0c\u53ef\u4ee5\u76f4\u89c2\u5730\u770b\u5230\u5bf9\u8c61\u4e4b\u95f4\u7684\u5f15\u7528\u5173\u7cfb\uff0c\u5e2e\u52a9\u8bc6\u522b\u73af\u5f15\u7528\u3002<\/p>\n<\/p>\n
\u516d\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u5224\u65ad\u548c\u5904\u7406\u73af\u5f15\u7528\u662f\u5185\u5b58\u7ba1\u7406\u7684\u91cd\u8981\u90e8\u5206\u3002\u5f15\u7528\u8ba1\u6570\u3001\u5783\u573e\u56de\u6536\u5668\u548c\u5f31\u5f15\u7528\u673a\u5236<\/strong>\u662fPython\u63d0\u4f9b\u7684\u4e09\u79cd\u4e3b\u8981\u65b9\u6cd5\u6765\u5e94\u5bf9\u73af\u5f15\u7528\u95ee\u9898\u3002\u5f15\u7528\u8ba1\u6570\u65e0\u6cd5\u5904\u7406\u73af\u5f15\u7528\uff0c\u800c\u5783\u573e\u56de\u6536\u5668\u53ef\u4ee5\u81ea\u52a8\u68c0\u6d4b\u548c\u56de\u6536\u73af\u5f15\u7528\u3002\u5f31\u5f15\u7528\u901a\u8fc7\u907f\u514d\u589e\u52a0\u5f15\u7528\u8ba1\u6570\u6765\u9632\u6b62\u73af\u5f15\u7528\u3002\u4e3a\u4e86\u907f\u514d\u73af\u5f15\u7528\uff0c\u5efa\u8bae\u8bbe\u8ba1\u826f\u597d\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5e76\u5728\u9002\u5f53\u7684\u65f6\u5019\u4f7f\u7528\u5f31\u5f15\u7528\u548c\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u3002\u6b64\u5916\uff0c\u901a\u8fc7\u4f7f\u7528gc<\/code>\u6a21\u5757\u548c\u5de5\u5177\u6765\u76d1\u63a7\u548c\u8c03\u8bd5\u5185\u5b58\u4f7f\u7528\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u7ba1\u7406Python\u7a0b\u5e8f\u7684\u5185\u5b58\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u68c0\u6d4b\u5bf9\u8c61\u7684\u73af\u5f15\u7528\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528gc<\/code>\u6a21\u5757\u6765\u68c0\u6d4b\u73af\u5f15\u7528\u3002gc<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86gc.collect()<\/code>\u548cgc.garbage<\/code>\u5c5e\u6027\uff0c\u524d\u8005\u7528\u4e8e\u5f3a\u5236\u8fdb\u884c\u5783\u573e\u56de\u6536\uff0c\u800c\u540e\u8005\u53ef\u4ee5\u8fd4\u56de\u65e0\u6cd5\u88ab\u56de\u6536\u7684\u5bf9\u8c61\u3002\u5982\u679c\u6709\u73af\u5f15\u7528\u5b58\u5728\uff0c\u8fd9\u4e9b\u5bf9\u8c61\u5c06\u51fa\u73b0\u5728gc.garbage<\/code>\u4e2d\u3002\u901a\u8fc7\u8fd9\u4e9b\u5de5\u5177\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u76d1\u6d4b\u548c\u5904\u7406\u73af\u5f15\u7528\u95ee\u9898\u3002<\/p>\n
\u73af\u5f15\u7528\u5bf9Python\u5185\u5b58\u7ba1\u7406\u6709\u4ec0\u4e48\u5f71\u54cd\uff1f<\/strong>
\u73af\u5f15\u7528\u4f1a\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\uff0c\u56e0\u4e3aPython\u7684\u5f15\u7528\u8ba1\u6570\u673a\u5236\u65e0\u6cd5\u81ea\u52a8\u56de\u6536\u8fd9\u4e9b\u4e92\u76f8\u5f15\u7528\u7684\u5bf9\u8c61\u3002\u5373\u4f7f\u5bf9\u8c61\u7684\u5f15\u7528\u8ba1\u6570\u4e3a\u96f6\uff0c\u53ea\u8981\u5b58\u5728\u73af\u5f15\u7528\uff0c\u5783\u573e\u56de\u6536\u5668\u4e5f\u4e0d\u4f1a\u5c06\u5176\u6e05\u9664\u3002\u8fd9\u53ef\u80fd\u5bfc\u81f4\u7a0b\u5e8f\u5728\u957f\u65f6\u95f4\u8fd0\u884c\u65f6\u5360\u7528\u8d8a\u6765\u8d8a\u591a\u7684\u5185\u5b58\uff0c\u964d\u4f4e\u6027\u80fd\u3002<\/p>\n
\u5982\u4f55\u907f\u514d\u5728Python\u4e2d\u521b\u5efa\u73af\u5f15\u7528\uff1f<\/strong>
\u907f\u514d\u73af\u5f15\u7528\u7684\u6700\u4f73\u5b9e\u8df5\u5305\u62ec\u4f7f\u7528\u5f31\u5f15\u7528\uff08\u901a\u8fc7weakref<\/code>\u6a21\u5757\uff09\u6765\u4ee3\u66ff\u5f3a\u5f15\u7528\uff0c\u5c24\u5176\u662f\u5728\u5bf9\u8c61\u4e4b\u95f4\u5b58\u5728\u53cc\u5411\u5f15\u7528\u65f6\u3002\u6b64\u5916\uff0c\u8bbe\u8ba1\u826f\u597d\u7684\u6570\u636e\u7ed3\u6784\u548c\u4f7f\u7528\u5408\u9002\u7684\u8bbe\u8ba1\u6a21\u5f0f\uff08\u5982\u89c2\u5bdf\u8005\u6a21\u5f0f\uff09\u4e5f\u6709\u52a9\u4e8e\u51cf\u5c11\u73af\u5f15\u7528\u7684\u53ef\u80fd\u6027\u3002\u5b9a\u671f\u4f7f\u7528gc.collect()<\/code>\u8fdb\u884c\u624b\u52a8\u5783\u573e\u56de\u6536\u4e5f\u662f\u4e00\u4e2a\u6709\u6548\u7684\u9632\u8303\u63aa\u65bd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u5224\u65ad\u73af\u5f15\u7528\uff0c\u53ef\u4ee5\u901a\u8fc7\u5f15\u7528\u8ba1\u6570\u3001\u5783\u573e\u56de\u6536\u5668\u68c0\u6d4b\u3001\u5f31\u5f15\u7528\u673a\u5236\u7b49\u65b9\u6cd5\u3002\u5f15\u7528\u8ba1\u6570\u662f\u901a\u8fc7\u8bb0\u5f55\u5bf9\u8c61\u88ab\u5f15\u7528\u7684 […]","protected":false},"author":3,"featured_media":991746,"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\/991737"}],"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=991737"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/991737\/revisions"}],"predecessor-version":[{"id":991748,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/991737\/revisions\/991748"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/991746"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=991737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=991737"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=991737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}