{"id":50339,"date":"2025-07-30T23:01:34","date_gmt":"2025-07-30T15:01:34","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/50339.html"},"modified":"2025-07-30T23:01:34","modified_gmt":"2025-07-30T15:01:34","slug":"python%e7%bc%96%e7%a8%8b%e4%b8%ad%e5%86%85%e5%ad%98%e7%ae%a1%e7%90%86%e5%8e%9f%e7%90%86%e8%ae%b2%e8%a7%a3%e4%b8%8e%e5%ae%9e%e8%b7%b5%e8%af%a6%e8%a7%a3_%e6%a1%88%e4%be%8b%e6%ba%90%e7%a0%81","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/50339.html","title":{"rendered":"Python\u7f16\u7a0b\u4e2d\u5185\u5b58\u7ba1\u7406\u539f\u7406\u8bb2\u89e3\u4e0e\u5b9e\u8df5\u8be6\u89e3_\u6848\u4f8b\u6e90\u7801"},"content":{"rendered":"

Python\u7f16\u7a0b\u4e2d\u5185\u5b58\u7ba1\u7406\u539f\u7406\u8bb2\u89e3\u4e0e\u5b9e\u8df5\u8be6\u89e3_\u6848\u4f8b\u6e90\u7801<\/h2>\n

\u4e00\u3001Python\u5185\u5b58\u7ba1\u7406\u57fa\u7840<\/h3>\n

\u6b22\u8fce\u6765\u5230"\u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2"\u5b66\u4e60Python\u7f16\u7a0b\u7ba1\u7406\u76f8\u5173\u6559\u7a0b！\u4eca\u5929\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8Python\u5185\u5b58\u7ba1\u7406\u7684\u539f\u7406\u4e0e\u5b9e\u8df5\u3002\u7406\u89e3\u5185\u5b58\u7ba1\u7406\u5bf9\u4e8e\u7f16\u5199\u9ad8\u6548\u3001\u53ef\u9760\u7684Python\u7a0b\u5e8f\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

1.1 Python\u5185\u5b58\u5206\u914d\u673a\u5236<\/h4>\n

Python\u7684\u5185\u5b58\u7ba1\u7406\u662f\u81ea\u52a8\u8fdb\u884c\u7684，\u5f00\u53d1\u8005\u4e0d\u9700\u8981\u624b\u52a8\u5206\u914d\u548c\u91ca\u653e\u5185\u5b58\u3002\u8fd9\u4e3b\u8981\u901a\u8fc7\u4ee5\u4e0b\u673a\u5236\u5b9e\u73b0：<\/p>\n

# \u793a\u4f8b1：Python\u53d8\u91cf\u5185\u5b58\u5206\u914d\u6f14\u793a<\/span>
\n# \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u793a\u4f8b\u4ee3\u7801<\/span><\/p>\n

a =<\/span> 10<\/span> # Python\u89e3\u91ca\u5668\u4e3a\u6574\u657010\u5206\u914d\u5185\u5b58，\u53d8\u91cfa\u5f15\u7528\u8be5\u5185\u5b58<\/span>
\nb =<\/span> a # b\u73b0\u5728\u5f15\u7528\u4e0ea\u76f8\u540c\u7684\u5185\u5b58\u5730\u5740<\/span><\/p>\n

print<\/span>(<\/span>id<\/span>(<\/span>a)<\/span>)<\/span> # \u6253\u5370a\u7684\u5185\u5b58\u5730\u5740（\u5341\u4e00\u5251\u6ce8：id()\u51fd\u6570\u8fd4\u56de\u5bf9\u8c61\u7684\u5185\u5b58\u5730\u5740）<\/span>
\nprint<\/span>(<\/span>id<\/span>(<\/span>b)<\/span>)<\/span> # \u6253\u5370b\u7684\u5185\u5b58\u5730\u5740，\u4e0ea\u76f8\u540c<\/span><\/p>\n

# \u8f93\u51fa\u7ed3\u679c：<\/span>
\n# 140736345693136 (\u793a\u4f8b\u5730\u5740，\u5b9e\u9645\u8fd0\u884c\u4f1a\u4e0d\u540c)<\/span>
\n# 140736345693136<\/span><\/p>\n

1.2 \u5f15\u7528\u8ba1\u6570\u673a\u5236<\/h4>\n

Python\u4f7f\u7528\u5f15\u7528\u8ba1\u6570\u4f5c\u4e3a\u4e3b\u8981\u7684\u5185\u5b58\u7ba1\u7406\u673a\u5236：<\/p>\n

# \u793a\u4f8b2：\u5f15\u7528\u8ba1\u6570\u6f14\u793a<\/span>
\n# \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u5b66\u4e60\u793a\u4f8b<\/span><\/p>\n

import<\/span> sys<\/p>\n

def<\/span> ref_count_demo<\/span>(<\/span>)<\/span>:<\/span>
\n x =<\/span> [<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>]<\/span> # \u521b\u5efa\u4e00\u4e2a\u5217\u8868\u5bf9\u8c61，\u5f15\u7528\u8ba1\u6570\u4e3a1<\/span>
\n y =<\/span> x # y\u5f15\u7528\u540c\u4e00\u4e2a\u5217\u8868，\u5f15\u7528\u8ba1\u6570\u53d8\u4e3a2<\/span>
\n print<\/span>(<\/span>"\u5f15\u7528\u8ba1\u6570:"<\/span>,<\/span> sys.<\/span>getrefcount(<\/span>x)<\/span> –<\/span> 1<\/span>)<\/span> # \u5341\u4e00\u5251\u6ce8：getrefcount()\u4f1a\u4e34\u65f6\u589e\u52a0\u5f15\u7528<\/span><\/p>\n

del<\/span> y # \u5220\u9664\u4e00\u4e2a\u5f15\u7528，\u8ba1\u6570\u51cf1<\/span>
\n print<\/span>(<\/span>"\u5220\u9664y\u540e\u5f15\u7528\u8ba1\u6570:"<\/span>,<\/span> sys.<\/span>getrefcount(<\/span>x)<\/span> –<\/span> 1<\/span>)<\/span><\/p>\n

# \u51fd\u6570\u7ed3\u675f\u65f6x\u7684\u5f15\u7528\u4e5f\u4f1a\u88ab\u6e05\u9664，\u8ba1\u6570\u4e3a0\u65f6\u5185\u5b58\u88ab\u56de\u6536<\/span><\/p>\n

ref_count_demo(<\/span>)<\/span><\/p>\n

\u4e8c\u3001Python\u5783\u573e\u56de\u6536\u673a\u5236<\/h3>\n

2.1 \u5206\u4ee3\u56de\u6536<\/h4>\n

Python\u4f7f\u7528\u5206\u4ee3\u5783\u573e\u56de\u6536\u6765\u5904\u7406\u5faa\u73af\u5f15\u7528\u95ee\u9898：<\/p>\n

# \u793a\u4f8b3：\u5faa\u73af\u5f15\u7528\u4e0e\u5783\u573e\u56de\u6536<\/span>
\n# \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u793a\u4f8b<\/span><\/p>\n

import<\/span> gc # \u5783\u573e\u56de\u6536\u6a21\u5757<\/span><\/p>\n

class<\/span> Node<\/span>:<\/span>
\n def<\/span> __init__<\/span>(<\/span>self,<\/span> name)<\/span>:<\/span>
\n self.<\/span>name =<\/span> name
\n self.<\/span>next<\/span> =<\/span> None<\/span><\/p>\n

def<\/span> circular_reference_demo<\/span>(<\/span>)<\/span>:<\/span>
\n # \u521b\u5efa\u5faa\u73af\u5f15\u7528<\/span>
\n node1 =<\/span> Node(<\/span>"\u8282\u70b91"<\/span>)<\/span> # \u5341\u4e00\u5251\u6ce8：\u521b\u5efa\u7b2c\u4e00\u4e2a\u8282\u70b9<\/span>
\n node2 =<\/span> Node(<\/span>"\u8282\u70b92"<\/span>)<\/span> # \u521b\u5efa\u7b2c\u4e8c\u4e2a\u8282\u70b9<\/span><\/p>\n

node1.<\/span>next<\/span> =<\/span> node2 # \u8282\u70b91\u6307\u5411\u8282\u70b92<\/span>
\n node2.<\/span>next<\/span> =<\/span> node1 # \u8282\u70b92\u6307\u5411\u8282\u70b91，\u5f62\u6210\u5faa\u73af\u5f15\u7528<\/span><\/p>\n

# \u5220\u9664\u5916\u90e8\u5f15\u7528<\/span>
\n del<\/span> node1
\n del<\/span> node2<\/p>\n

# \u624b\u52a8\u89e6\u53d1\u5783\u573e\u56de\u6536<\/span>
\n collected =<\/span> gc.<\/span>collect(<\/span>)<\/span> # \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u5b66\u4e60：\u663e\u5f0f\u8c03\u7528\u5783\u573e\u56de\u6536<\/span>
\n print<\/span>(<\/span>f"\u56de\u6536\u7684\u5783\u573e\u5bf9\u8c61\u6570\u91cf: <\/span>{<\/span>collected}<\/span><\/span>"<\/span><\/span>)<\/span><\/p>\n

circular_reference_demo(<\/span>)<\/span><\/p>\n

2.2 \u5185\u5b58\u6c60\u673a\u5236<\/h4>\n

Python\u4f7f\u7528\u5185\u5b58\u6c60\u6765\u7ba1\u7406\u5c0f\u5bf9\u8c61\u7684\u5185\u5b58\u5206\u914d：<\/p>\n

# \u793a\u4f8b4：\u5c0f\u6574\u6570\u5bf9\u8c61\u6c60<\/span>
\n# \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u5b66\u4e60\u793a\u4f8b<\/span><\/p>\n

def<\/span> small_int_pool<\/span>(<\/span>)<\/span>:<\/span>
\n a =<\/span> 10<\/span>
\n b =<\/span> 10<\/span>
\n print<\/span>(<\/span>"a\u548cb\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u5417?"<\/span>,<\/span> a is<\/span> b)<\/span> # True，\u56e0\u4e3a\u5c0f\u6574\u6570\u4f7f\u7528\u5bf9\u8c61\u6c60<\/span><\/p>\n

c =<\/span> 1000<\/span>
\n d =<\/span> 1000<\/span>
\n print<\/span>(<\/span>"c\u548cd\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u5417?"<\/span>,<\/span> c is<\/span> d)<\/span> # \u5341\u4e00\u5251\u6ce8：Python\u5b9e\u73b0\u53ef\u80fd\u4e0d\u540c，\u53ef\u80fd\u4e3aFalse<\/span><\/p>\n

# \u5728\u4ea4\u4e92\u5f0f\u73af\u5883\u4e2d，\u5c0f\u6574\u6570(-5\u5230256)\u4f1a\u88ab\u7f13\u5b58<\/span>
\n e =<\/span> 256<\/span>
\n f =<\/span> 256<\/span>
\n print<\/span>(<\/span>"e\u548cf\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u5417?"<\/span>,<\/span> e is<\/span> f)<\/span> # True<\/span><\/p>\n

g =<\/span> 257<\/span>
\n h =<\/span> 257<\/span>
\n print<\/span>(<\/span>"g\u548ch\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u5417?"<\/span>,<\/span> g is<\/span> h)<\/span> # False<\/span><\/p>\n

small_int_pool(<\/span>)<\/span><\/p>\n

\u4e09\u3001\u5185\u5b58\u4f18\u5316\u5b9e\u8df5<\/h3>\n

3.1 \u4f7f\u7528__slots__\u51cf\u5c11\u5185\u5b58\u5360\u7528<\/h4>\n

# \u793a\u4f8b5：\u4f7f\u7528__slots__\u4f18\u5316\u5185\u5b58<\/span>
\n# \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u793a\u4f8b\u4ee3\u7801<\/span><\/p>\n

import<\/span> sys<\/p>\n

class<\/span> RegularUser<\/span>:<\/span>
\n def<\/span> __init__<\/span>(<\/span>self,<\/span> name,<\/span> age)<\/span>:<\/span>
\n self.<\/span>name =<\/span> name
\n self.<\/span>age =<\/span> age<\/p>\n

class<\/span> SlotUser<\/span>:<\/span>
\n __slots__ =<\/span> [<\/span>'name'<\/span>,<\/span> 'age'<\/span>]<\/span> # \u5341\u4e00\u5251\u6ce8：\u9650\u5236\u5c5e\u6027，\u8282\u7701\u5185\u5b58<\/span><\/p>\n

def<\/span> __init__<\/span>(<\/span>self,<\/span> name,<\/span> age)<\/span>:<\/span>
\n self.<\/span>name =<\/span> name
\n self.<\/span>age =<\/span> age<\/p>\n

def<\/span> memory_compare<\/span>(<\/span>)<\/span>:<\/span>
\n regular =<\/span> RegularUser(<\/span>"\u5341\u4e00\u5251"<\/span>,<\/span> 30<\/span>)<\/span>
\n slot =<\/span> SlotUser(<\/span>"\u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2"<\/span>,<\/span> 30<\/span>)<\/span><\/p>\n

# \u6bd4\u8f83\u5185\u5b58\u5360\u7528<\/span>
\n regular_size =<\/span> sys.<\/span>getsizeof(<\/span>regular)<\/span> +<\/span> sys.<\/span>getsizeof(<\/span>regular.<\/span>__dict__)<\/span>
\n slot_size =<\/span> sys.<\/span>getsizeof(<\/span>slot)<\/span> # __slots__\u7c7b\u6ca1\u6709__dict__<\/span><\/p>\n

print<\/span>(<\/span>f"\u5e38\u89c4\u7c7b\u5185\u5b58\u5360\u7528: <\/span>{<\/span>regular_size}<\/span><\/span> \u5b57\u8282"<\/span><\/span>)<\/span>
\n print<\/span>(<\/span>f"__slots__\u7c7b\u5185\u5b58\u5360\u7528: <\/span>{<\/span>slot_size}<\/span><\/span> \u5b57\u8282"<\/span><\/span>)<\/span> # \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u5b66\u4e60：\u660e\u663e\u66f4\u5c0f<\/span><\/p>\n

memory_compare(<\/span>)<\/span><\/p>\n

3.2 \u751f\u6210\u5668\u4e0e\u5185\u5b58\u6548\u7387<\/h4>\n

# \u793a\u4f8b6：\u751f\u6210\u5668\u8282\u7701\u5185\u5b58<\/span>
\n# \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u5b66\u4e60\u793a\u4f8b<\/span><\/p>\n

def<\/span> large_list_memory<\/span>(<\/span>)<\/span>:<\/span>
\n # \u4f20\u7edf\u5217\u8868\u65b9\u5f0f<\/span>
\n def<\/span> get_squares_list<\/span>(<\/span>n)<\/span>:<\/span>
\n return<\/span> [<\/span>i**<\/span>2<\/span> for<\/span> i in<\/span> range<\/span>(<\/span>n)<\/span>]<\/span> # \u521b\u5efa\u5b8c\u6574\u5217\u8868<\/span><\/p>\n

# \u751f\u6210\u5668\u65b9\u5f0f<\/span>
\n def<\/span> get_squares_gen<\/span>(<\/span>n)<\/span>:<\/span>
\n return<\/span> (<\/span>i**<\/span>2<\/span> for<\/span> i in<\/span> range<\/span>(<\/span>n)<\/span>)<\/span> # \u5341\u4e00\u5251\u6ce8：\u8fd4\u56de\u751f\u6210\u5668\u8868\u8fbe\u5f0f<\/span><\/p>\n

import<\/span> sys
\n n =<\/span> 1000000<\/span><\/p>\n

# \u6bd4\u8f83\u5185\u5b58\u4f7f\u7528<\/span>
\n list_size =<\/span> sys.<\/span>getsizeof(<\/span>get_squares_list(<\/span>n)<\/span>)<\/span>
\n gen_size =<\/span> sys.<\/span>getsizeof(<\/span>get_squares_gen(<\/span>n)<\/span>)<\/span><\/p>\n

print<\/span>(<\/span>f"\u5217\u8868\u5360\u7528\u5185\u5b58: <\/span>{<\/span>list_size\/<\/span>1024<\/span>\/<\/span>1024<\/span>:<\/span>.2f<\/span>}<\/span><\/span> MB"<\/span><\/span>)<\/span> # \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2：\u7ea68.58MB<\/span>
\n print<\/span>(<\/span>f"\u751f\u6210\u5668\u5360\u7528\u5185\u5b58: <\/span>{<\/span>gen_size}<\/span><\/span> \u5b57\u8282"<\/span><\/span>)<\/span> # \u4ec5112\u5b57\u8282<\/span><\/p>\n

large_list_memory(<\/span>)<\/span><\/p>\n

\u56db\u3001\u9ad8\u7ea7\u5185\u5b58\u5206\u6790\u5de5\u5177<\/h3>\n

4.1 \u4f7f\u7528memory_profiler\u5206\u6790\u5185\u5b58<\/h4>\n

# \u793a\u4f8b7：\u5185\u5b58\u5206\u6790\u5de5\u5177\u4f7f\u7528<\/span>
\n# \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u793a\u4f8b\u4ee3\u7801<\/span><\/p>\n

# \u9700\u8981\u5148\u5b89\u88c5：pip install memory-profiler<\/span>
\nfrom<\/span> memory_profiler import<\/span> profile<\/p>\n

@profile<\/span> # \u5341\u4e00\u5251\u6ce8：\u88c5\u9970\u5668\u7528\u4e8e\u5185\u5b58\u5206\u6790<\/span>
\ndef<\/span> memory_intensive_task<\/span>(<\/span>)<\/span>:<\/span>
\n # \u521b\u5efa\u4e00\u4e2a\u5927\u6570\u636e\u7ed3\u6784<\/span>
\n big_list =<\/span> [<\/span>i for<\/span> i in<\/span> range<\/span>(<\/span>100000<\/span>)<\/span>]<\/span> # \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u5b66\u4e60：\u5217\u8868\u63a8\u5bfc\u5f0f<\/span><\/p>\n

# \u5904\u7406\u6570\u636e<\/span>
\n result =<\/span> sum<\/span>(<\/span>x *<\/span> 2<\/span> for<\/span> x in<\/span> big_list)<\/span><\/p>\n

# \u521b\u5efa\u53e6\u4e00\u4e2a\u5927\u5b57\u5178<\/span>
\n big_dict =<\/span> {<\/span>i:<\/span> str<\/span>(<\/span>i)<\/span> for<\/span> i in<\/span> range<\/span>(<\/span>100000<\/span>)<\/span>}<\/span><\/p>\n

return<\/span> result<\/p>\n

if<\/span> __name__ ==<\/span> "__main__"<\/span>:<\/span>
\n memory_intensive_task(<\/span>)<\/span><\/p>\n

4.2 \u4f7f\u7528tracemalloc\u8ddf\u8e2a\u5185\u5b58\u5206\u914d<\/h4>\n

# \u793a\u4f8b8：tracemalloc\u5185\u5b58\u8ddf\u8e2a<\/span>
\n# \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u5b66\u4e60\u793a\u4f8b<\/span><\/p>\n

import<\/span> tracemalloc<\/p>\n

def<\/span> trace_memory_allocation<\/span>(<\/span>)<\/span>:<\/span>
\n # \u5f00\u59cb\u8ddf\u8e2a\u5185\u5b58\u5206\u914d<\/span>
\n tracemalloc.<\/span>start(<\/span>)<\/span><\/p>\n

# \u5206\u914d\u4e00\u4e9b\u5185\u5b58<\/span>
\n x =<\/span> [<\/span>i for<\/span> i in<\/span> range<\/span>(<\/span>10000<\/span>)<\/span>]<\/span> # \u5341\u4e00\u5251\u6ce8：\u521b\u5efa\u5927\u5217\u8868<\/span>
\n y =<\/span> {<\/span>i:<\/span> str<\/span>(<\/span>i)<\/span> for<\/span> i in<\/span> range<\/span>(<\/span>10000<\/span>)<\/span>}<\/span> # \u521b\u5efa\u5927\u5b57\u5178<\/span><\/p>\n

# \u83b7\u53d6\u5185\u5b58\u5feb\u7167<\/span>
\n snapshot =<\/span> tracemalloc.<\/span>take_snapshot(<\/span>)<\/span>
\n top_stats =<\/span> snapshot.<\/span>statistics(<\/span>'lineno'<\/span>)<\/span><\/p>\n

print<\/span>(<\/span>"[\u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2] \u5185\u5b58\u5206\u914d\u7edf\u8ba1:"<\/span>)<\/span>
\n for<\/span> stat in<\/span> top_stats[<\/span>:<\/span>5<\/span>]<\/span>:<\/span> # \u663e\u793a\u524d5\u4e2a\u5185\u5b58\u5206\u914d<\/span>
\n print<\/span>(<\/span>stat)<\/span><\/p>\n

trace_memory_allocation(<\/span>)<\/span><\/p>\n

\u4e94\u3001\u5b9e\u9645\u5e94\u7528\u6848\u4f8b<\/h3>\n

5.1 \u5927\u6570\u636e\u5904\u7406\u4f18\u5316<\/h4>\n

# \u793a\u4f8b9：\u5927\u6570\u636e\u5904\u7406\u5185\u5b58\u4f18\u5316<\/span>
\n# \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u793a\u4f8b\u4ee3\u7801<\/span><\/p>\n

def<\/span> process_large_file<\/span>(<\/span>file_path)<\/span>:<\/span>
\n """\u5904\u7406\u5927\u6587\u4ef6\u7684\u5185\u5b58\u4f18\u5316\u65b9\u6cd5"""<\/span>
\n # \u5341\u4e00\u5251\u6ce8：\u9010\u884c\u5904\u7406\u800c\u4e0d\u52a0\u8f7d\u6574\u4e2a\u6587\u4ef6<\/span>
\n with<\/span> open<\/span>(<\/span>file_path,<\/span> 'r'<\/span>)<\/span> as<\/span> file<\/span>:<\/span>
\n for<\/span> line in<\/span> file<\/span>:<\/span> # \u4f7f\u7528\u8fed\u4ee3\u5668\u9010\u884c\u8bfb\u53d6<\/span>
\n # \u5904\u7406\u6bcf\u4e00\u884c\u6570\u636e<\/span>
\n processed_line =<\/span> line.<\/span>strip(<\/span>)<\/span>.<\/span>upper(<\/span>)<\/span>
\n yield<\/span> processed_line # \u4f7f\u7528\u751f\u6210\u5668\u8fd4\u56de\u7ed3\u679c<\/span><\/p>\n

def<\/span> save_processed_data<\/span>(<\/span>output_path,<\/span> data_gen)<\/span>:<\/span>
\n """\u4fdd\u5b58\u5904\u7406\u540e\u7684\u6570\u636e"""<\/span>
\n with<\/span> open<\/span>(<\/span>output_path,<\/span> 'w'<\/span>)<\/span> as<\/span> out_file:<\/span>
\n for<\/span> data in<\/span> data_gen:<\/span> # \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u5b66\u4e60：\u9010\u4e2a\u5904\u7406\u751f\u6210\u5668\u9879<\/span>
\n out_file.<\/span>write(<\/span>data +<\/span> '\\\\n'<\/span>)<\/span><\/p>\n

# \u4f7f\u7528\u793a\u4f8b<\/span>
\nif<\/span> __name__ ==<\/span> "__main__"<\/span>:<\/span>
\n input_file =<\/span> "large_input.txt"<\/span>
\n output_file =<\/span> "processed_output.txt"<\/span><\/p>\n

data_processor =<\/span> process_large_file(<\/span>input_file)<\/span>
\n save_processed_data(<\/span>output_file,<\/span> data_processor)<\/span><\/p>\n

print<\/span>(<\/span>"[\u5341\u4e00\u5251] \u5927\u6587\u4ef6\u5904\u7406\u5b8c\u6210，\u5185\u5b58\u9ad8\u6548\u4f7f\u7528！"<\/span>)<\/span><\/p>\n

5.2 \u7f13\u5b58\u4f18\u5316\u5b9e\u8df5<\/h4>\n

# \u793a\u4f8b10：\u4f7f\u7528functools.lru_cache\u4f18\u5316\u9012\u5f52<\/span>
\n# \u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2\u5b66\u4e60\u793a\u4f8b<\/span><\/p>\n

import<\/span> functools
\nimport<\/span> time<\/p>\n

# \u4e0d\u4f7f\u7528\u7f13\u5b58<\/span>
\ndef<\/span> fib<\/span>(<\/span>n)<\/span>:<\/span>
\n """\u666e\u901a\u6590\u6ce2\u90a3\u5951\u5b9e\u73b0"""<\/span>
\n if<\/span> n <<\/span> 2<\/span>:<\/span>
\n return<\/span> n
\n return<\/span> fib(<\/span>n–<\/span>1<\/span>)<\/span> +<\/span> fib(<\/span>n–<\/span>2<\/span>)<\/span><\/p>\n

# \u4f7f\u7528\u7f13\u5b58\u4f18\u5316<\/span>
\n@functools.<\/span>lru_cache<\/span>(<\/span>maxsize=<\/span>None<\/span>)<\/span> # \u5341\u4e00\u5251\u6ce8：\u65e0\u9650\u5927\u5c0f\u7f13\u5b58<\/span>
\ndef<\/span> fib_cached<\/span>(<\/span>n)<\/span>:<\/span>
\n """\u5e26\u7f13\u5b58\u7684\u6590\u6ce2\u90a3\u5951\u5b9e\u73b0"""<\/span>
\n if<\/span> n <<\/span> 2<\/span>:<\/span>
\n return<\/span> n
\n return<\/span> fib_cached(<\/span>n–<\/span>1<\/span>)<\/span> +<\/span> fib_cached(<\/span>n–<\/span>2<\/span>)<\/span><\/p>\n

def<\/span> performance_compare<\/span>(<\/span>)<\/span>:<\/span>
\n n =<\/span> 35<\/span> # \u8ba1\u7b97\u6590\u6ce2\u90a3\u5951\u6570\u5217\u7b2c35\u9879<\/span><\/p>\n

print<\/span>(<\/span>"[\u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2] \u6027\u80fd\u6bd4\u8f83:"<\/span>)<\/span><\/p>\n

# \u6d4b\u8bd5\u666e\u901a\u7248\u672c<\/span>
\n start =<\/span> time.<\/span>time(<\/span>)<\/span>
\n result =<\/span> fib(<\/span>n)<\/span>
\n end =<\/span> time.<\/span>time(<\/span>)<\/span>
\n print<\/span>(<\/span>f"\u666e\u901a\u7248\u672c: \u7ed3\u679c=<\/span>{<\/span>result}<\/span><\/span>, \u8017\u65f6=<\/span>{<\/span>end–<\/span>start:<\/span>.4f<\/span>}<\/span><\/span>\u79d2"<\/span><\/span>)<\/span><\/p>\n

# \u6d4b\u8bd5\u7f13\u5b58\u7248\u672c<\/span>
\n start =<\/span> time.<\/span>time(<\/span>)<\/span>
\n result =<\/span> fib_cached(<\/span>n)<\/span>
\n end =<\/span> time.<\/span>time(<\/span>)<\/span>
\n print<\/span>(<\/span>f"\u7f13\u5b58\u7248\u672c: \u7ed3\u679c=<\/span>{<\/span>result}<\/span><\/span>, \u8017\u65f6=<\/span>{<\/span>end–<\/span>start:<\/span>.4f<\/span>}<\/span><\/span>\u79d2"<\/span><\/span>)<\/span><\/p>\n

performance_compare(<\/span>)<\/span><\/p>\n

\u516d\u3001\u5212\u91cd\u70b9！！！<\/h3>\n

\u901a\u8fc7"\u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2"\u7684\u8fd9\u7bc7\u6559\u7a0b，\u6211\u4eec\u4ecePython\u5185\u5b58\u7ba1\u7406\u7684\u57fa\u7840\u539f\u7406\u51fa\u53d1，\u9010\u6b65\u6df1\u5165\u5230\u5b9e\u9645\u5e94\u7528\u548c\u4f18\u5316\u6280\u5de7\u3002\u5173\u952e\u8981\u70b9\u5305\u62ec：<\/p>\n

  • Python\u4f7f\u7528\u5f15\u7528\u8ba1\u6570\u548c\u5783\u573e\u56de\u6536\u81ea\u52a8\u7ba1\u7406\u5185\u5b58<\/li>\n
  • \u5185\u5b58\u6c60\u673a\u5236\u4f18\u5316\u4e86\u5c0f\u5bf9\u8c61\u7684\u5185\u5b58\u5206\u914d<\/li>\n
  • \u4f7f\u7528__slots__\u3001\u751f\u6210\u5668\u7b49\u6280\u672f\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u5185\u5b58\u5360\u7528<\/li>\n
  • \u5de5\u5177\u5982memory_profiler\u548ctracemalloc\u53ef\u5e2e\u52a9\u5206\u6790\u5185\u5b58\u4f7f\u7528<\/li>\n
  • \u5728\u5b9e\u9645\u5e94\u7528\u4e2d，\u91c7\u7528\u9002\u5f53\u7b56\u7565\u5904\u7406\u5927\u6570\u636e\u548c\u7f13\u5b58<\/li>\n

    \u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u5e2e\u52a9\u60a8\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f18\u5316Python\u7a0b\u5e8f\u7684\u5185\u5b58\u4f7f\u7528！\u8bb0\u4f4f，\u826f\u597d\u7684\u5185\u5b58\u7ba1\u7406\u4e60\u60ef\u662f\u6210\u4e3a\u9ad8\u7ea7Python\u5f00\u53d1\u8005\u7684\u91cd\u8981\u4e00\u6b65\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb223\u6b21\uff0c\u70b9\u8d5e3\u6b21\uff0c\u6536\u85cf8\u6b21\u3002\u6b22\u8fce\u6765\u5230"\u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2"\u5b66\u4e60Python\u7f16\u7a0b\u7ba1\u7406\u76f8\u5173\u6559\u7a0b\uff01\u4eca\u5929\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8Python\u5185\u5b58\u7ba1\u7406\u7684\u539f\u7406\u4e0e\u5b9e\u8df5\u3002\u7406\u89e3\u5185\u5b58\u7ba1\u7406\u5bf9\u4e8e\u7f16\u5199\u9ad8\u6548\u3001\u53ef\u9760\u7684Python\u7a0b\u5e8f\u81f3\u5173\u91cd\u8981\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[81,371,190,427],"topic":[],"class_list":["post-50339","post","type-post","status-publish","format-standard","hentry","category-server","tag-python","tag-371","tag-190","tag-427"],"yoast_head":"\nPython\u7f16\u7a0b\u4e2d\u5185\u5b58\u7ba1\u7406\u539f\u7406\u8bb2\u89e3\u4e0e\u5b9e\u8df5\u8be6\u89e3_\u6848\u4f8b\u6e90\u7801 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/50339.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python\u7f16\u7a0b\u4e2d\u5185\u5b58\u7ba1\u7406\u539f\u7406\u8bb2\u89e3\u4e0e\u5b9e\u8df5\u8be6\u89e3_\u6848\u4f8b\u6e90\u7801 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb223\u6b21\uff0c\u70b9\u8d5e3\u6b21\uff0c\u6536\u85cf8\u6b21\u3002\u6b22\u8fce\u6765\u5230"\u5341\u4e00\u5251\u7684CS_DN\u535a\u5ba2"\u5b66\u4e60Python\u7f16\u7a0b\u7ba1\u7406\u76f8\u5173\u6559\u7a0b\uff01\u4eca\u5929\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8Python\u5185\u5b58\u7ba1\u7406\u7684\u539f\u7406\u4e0e\u5b9e\u8df5\u3002\u7406\u89e3\u5185\u5b58\u7ba1\u7406\u5bf9\u4e8e\u7f16\u5199\u9ad8\u6548\u3001\u53ef\u9760\u7684Python\u7a0b\u5e8f\u81f3\u5173\u91cd\u8981\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/50339.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-30T15:01:34+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/50339.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/50339.html\",\"name\":\"Python\u7f16\u7a0b\u4e2d\u5185\u5b58\u7ba1\u7406\u539f\u7406\u8bb2\u89e3\u4e0e\u5b9e\u8df5\u8be6\u89e3_\u6848\u4f8b\u6e90\u7801 - 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