{"id":1168466,"date":"2025-01-15T15:58:25","date_gmt":"2025-01-15T07:58:25","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1168466.html"},"modified":"2025-01-15T15:58:27","modified_gmt":"2025-01-15T07:58:27","slug":"python%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3%e5%a4%9a%e9%87%8d%e5%be%aa%e7%8e%af","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1168466.html","title":{"rendered":"python\u5982\u4f55\u89e3\u51b3\u591a\u91cd\u5faa\u73af"},"content":{"rendered":"

\"python\u5982\u4f55\u89e3\u51b3\u591a\u91cd\u5faa\u73af\"<\/p>\n

Python\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5217\u8868\u751f\u6210\u5f0f\u3001\u51fd\u6570\u548c\u9012\u5f52\u3001\u751f\u6210\u5668\u7b49\u65b9\u6cd5\u89e3\u51b3\u591a\u91cd\u5faa\u73af\u7684\u95ee\u9898<\/strong>\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u4e0d\u4ec5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\uff0c\u8fd8\u53ef\u4ee5\u63d0\u5347\u8fd0\u884c\u6548\u7387\u3002\u5217\u8868\u751f\u6210\u5f0f<\/strong>\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u7b80\u6d01\u7684\u8bed\u6cd5\u6765\u5b9e\u73b0\u591a\u91cd\u5faa\u73af\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u53ca\u5176\u5e94\u7528\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u5217\u8868\u751f\u6210\u5f0f<\/h3>\n<\/p>\n

\u5217\u8868\u751f\u6210\u5f0f\u662f\u4e00\u79cd\u7d27\u51d1\u4e14\u5f3a\u5927\u7684\u65b9\u5f0f\uff0c\u7528\u4e8e\u751f\u6210\u5217\u8868\u3002\u5b83\u53ef\u4ee5\u66ff\u4ee3\u591a\u91cd\u5faa\u73af\uff0c\u4f7f\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u548c\u6613\u8bfb\u3002<\/p>\n<\/p>\n

\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n

# \u4f20\u7edf\u591a\u91cd\u5faa\u73af<\/p>\n
result = []<\/p>\n
for i in range(3):<\/p>\n
    for j in range(3):<\/p>\n
        result.append((i, j))<\/p>\n
print(result)<\/p>\n
\u5217\u8868\u751f\u6210\u5f0f<\/strong><\/h2>\n
result = [(i, j) for i in range(3) for j in range(3)]<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u5217\u8868\u751f\u6210\u5f0f\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\uff0c\u4e0d\u4ec5\u51cf\u5c11\u4e86\u4ee3\u7801\u884c\u6570\uff0c\u8fd8\u63d0\u9ad8\u4e86\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u51fd\u6570\u548c\u9012\u5f52<\/h3>\n<\/p>\n
\u901a\u8fc7\u4f7f\u7528\u51fd\u6570\u548c\u9012\u5f52\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u591a\u91cd\u5faa\u73af\u7684\u95ee\u9898\u5206\u89e3\u6210\u66f4\u5c0f\u7684\u5b50\u95ee\u9898\uff0c\u4ece\u800c\u907f\u514d\u5d4c\u5957\u5faa\u73af\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
def generate_pAI<\/a>rs(n, m):<\/p>\n
    if n == 0:<\/p>\n
        return [(0, j) for j in range(m)]<\/p>\n
    else:<\/p>\n
        result = generate_pairs(n - 1, m)<\/p>\n
        return result + [(n, j) for j in range(m)]<\/p>\n
result = generate_pairs(3, 3)<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u9012\u5f52\u7684\u65b9\u6cd5\u751f\u6210\u4e86\u6240\u6709\u7684\u914d\u5bf9\uff0c\u907f\u514d\u4e86\u591a\u91cd\u5faa\u73af\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u751f\u6210\u5668<\/h3>\n<\/p>\n
\u751f\u6210\u5668\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u8fed\u4ee3\u5668\uff0c\u901a\u8fc7 yield<\/code> \u5173\u952e\u5b57\u53ef\u4ee5\u9010\u6b65\u751f\u6210\u503c\uff0c\u907f\u514d\u4e86\u5c06\u6240\u6709\u6570\u636e\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
def generate_pairs(n, m):<\/p>\n
    for i in range(n):<\/p>\n
        for j in range(m):<\/p>\n
            yield (i, j)<\/p>\n
result = list(generate_pairs(3, 3))<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u751f\u6210\u5668\u4e0d\u4ec5\u4f7f\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\uff0c\u8fd8\u80fd\u8282\u7701\u5185\u5b58\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6548\u7387\u3002<\/p>\n<\/p>\n
\u56db\u3001\u5229\u7528 itertools \u6a21\u5757<\/h3>\n<\/p>\n
itertools<\/code> \u6a21\u5757\u63d0\u4f9b\u4e86\u591a\u79cd\u8fed\u4ee3\u5668\u751f\u6210\u51fd\u6570\uff0c\u53ef\u4ee5\u7528\u6765\u7b80\u5316\u591a\u91cd\u5faa\u73af\u7684\u5904\u7406\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
import itertools<\/p>\n
result = list(itertools.product(range(3), range(3)))<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
itertools.product<\/code> \u53ef\u4ee5\u751f\u6210\u7b1b\u5361\u5c14\u79ef\uff0c\u5728\u591a\u91cd\u5faa\u73af\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
\u4e94\u3001Map \u548c Lambda \u51fd\u6570<\/h3>\n<\/p>\n
\u901a\u8fc7 map<\/code> \u51fd\u6570\u548c lambda<\/code> \u8868\u8fbe\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u66f4\u4e3a\u7b80\u6d01\u7684\u591a\u91cd\u5faa\u73af\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
result = list(map(lambda x: (x \/\/ 3, x % 3), range(9)))<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u5229\u7528\u4e86\u6570\u5b66\u8fd0\u7b97\u6765\u751f\u6210\u6240\u6709\u914d\u5bf9\uff0c\u907f\u514d\u4e86\u663e\u5f0f\u7684\u591a\u91cd\u5faa\u73af\u3002<\/p>\n<\/p>\n
\u516d\u3001NumPy \u5e93<\/h3>\n<\/p>\n
\u5bf9\u4e8e\u5904\u7406\u591a\u7ef4\u6570\u7ec4\u548c\u77e9\u9635\uff0cNumPy \u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u66ff\u4ee3\u591a\u91cd\u5faa\u73af\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
import numpy as np<\/p>\n
array = np.array([[i, j] for i in range(3) for j in range(3)])<\/p>\n
print(array)<\/p>\n
<\/code><\/pre>\n<\/p>\n
NumPy \u7684\u5411\u91cf\u5316\u64cd\u4f5c\u53ef\u4ee5\u5927\u5e45\u63d0\u5347\u6027\u80fd\uff0c\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u9ad8\u6548\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u6570\u636e\u6846\u67b6<\/h3>\n<\/p>\n
\u5bf9\u4e8e\u6570\u636e\u5904\u7406\u4efb\u52a1\uff0c\u4f7f\u7528\u6570\u636e\u6846\u67b6\u5982 Pandas\uff0c\u53ef\u4ee5\u66ff\u4ee3\u591a\u91cd\u5faa\u73af\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u7b80\u6d01\u6027\u548c\u6548\u7387\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
import pandas as pd<\/p>\n
df = pd.DataFrame([(i, j) for i in range(3) for j in range(3)], columns=['i', 'j'])<\/p>\n
print(df)<\/p>\n
<\/code><\/pre>\n<\/p>\n
Pandas \u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u6570\u636e\u64cd\u4f5c\u65b9\u6cd5\uff0c\u4f7f\u5f97\u6570\u636e\u5904\u7406\u66f4\u52a0\u4fbf\u6377\u3002<\/p>\n<\/p>\n
\u516b\u3001\u591a\u7ebf\u7a0b\u548c\u591a\u8fdb\u7a0b<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u591a\u91cd\u5faa\u73af\u53ef\u4ee5\u901a\u8fc7\u591a\u7ebf\u7a0b\u6216\u591a\u8fdb\u7a0b\u6765\u4f18\u5316\uff0c\u5c24\u5176\u662f\u5f53\u5faa\u73af\u4f53\u5185\u7684\u4efb\u52a1\u53ef\u4ee5\u5e76\u884c\u6267\u884c\u65f6\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
import concurrent.futures<\/p>\n
def process_pair(pair):<\/p>\n
    i, j = pair<\/p>\n
    return (i, j)<\/p>\n
pairs = [(i, j) for i in range(3) for j in range(3)]<\/p>\n
with concurrent.futures.ThreadPoolExecutor() as executor:<\/p>\n
    result = list(executor.map(process_pair, pairs))<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u4f7f\u7528 concurrent.futures<\/code> \u6a21\u5757\uff0c\u6211\u4eec\u53ef\u4ee5\u5e76\u884c\u5904\u7406\u5faa\u73af\u4e2d\u7684\u4efb\u52a1\uff0c\u63d0\u9ad8\u6267\u884c\u6548\u7387\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u5206\u6cbb\u6cd5<\/h3>\n<\/p>\n
\u5206\u6cbb\u6cd5\u662f\u4e00\u79cd\u5c06\u95ee\u9898\u5206\u6210\u66f4\u5c0f\u90e8\u5206\uff0c\u9010\u4e00\u89e3\u51b3\u7684\u7b56\u7565\uff0c\u9002\u7528\u4e8e\u67d0\u4e9b\u590d\u6742\u7684\u591a\u91cd\u5faa\u73af\u95ee\u9898\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
def divide_and_conquer(pairs):<\/p>\n
    if len(pairs) == 1:<\/p>\n
        return pairs<\/p>\n
    mid = len(pairs) \/\/ 2<\/p>\n
    left = divide_and_conquer(pairs[:mid])<\/p>\n
    right = divide_and_conquer(pairs[mid:])<\/p>\n
    return left + right<\/p>\n
pairs = [(i, j) for i in range(3) for j in range(3)]<\/p>\n
result = divide_and_conquer(pairs)<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u5c06\u95ee\u9898\u5206\u89e3\uff0c\u5206\u6cbb\u6cd5\u53ef\u4ee5\u7b80\u5316\u591a\u91cd\u5faa\u73af\u7684\u5904\u7406\u3002<\/p>\n<\/p>\n
\u5341\u3001\u52a8\u6001\u89c4\u5212<\/h3>\n<\/p>\n
\u52a8\u6001\u89c4\u5212\u662f\u4e00\u79cd\u901a\u8fc7\u4fdd\u5b58\u5b50\u95ee\u9898\u7684\u89e3\u6765\u907f\u514d\u91cd\u590d\u8ba1\u7b97\u7684\u7b56\u7565\uff0c\u9002\u7528\u4e8e\u67d0\u4e9b\u591a\u91cd\u5faa\u73af\u7684\u95ee\u9898\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
def dynamic_programming(n, m):<\/p>\n
    dp = [[0 for _ in range(m)] for _ in range(n)]<\/p>\n
    for i in range(n):<\/p>\n
        for j in range(m):<\/p>\n
            if i == 0 or j == 0:<\/p>\n
                dp[i][j] = 1<\/p>\n
            else:<\/p>\n
                dp[i][j] = dp[i-1][j] + dp[i][j-1]<\/p>\n
    return dp<\/p>\n
result = dynamic_programming(3, 3)<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u52a8\u6001\u89c4\u5212\u901a\u8fc7\u4fdd\u5b58\u4e2d\u95f4\u7ed3\u679c\uff0c\u53ef\u4ee5\u5927\u5e45\u51cf\u5c11\u8ba1\u7b97\u91cf\uff0c\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n<\/p>\n
\u5341\u4e00\u3001\u88c5\u9970\u5668<\/h3>\n<\/p>\n
\u88c5\u9970\u5668\u662f\u4e00\u79cd\u51fd\u6570\uff0c\u53ef\u4ee5\u7528\u4e8e\u4fee\u6539\u5176\u4ed6\u51fd\u6570\u7684\u884c\u4e3a\uff0c\u9002\u7528\u4e8e\u67d0\u4e9b\u9700\u8981\u91cd\u590d\u6267\u884c\u7684\u591a\u91cd\u5faa\u73af\u4efb\u52a1\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
def loop_decorator(func):<\/p>\n
    def wrapper(*args, kwargs):<\/p>\n
        result = []<\/p>\n
        for i in range(args[0]):<\/p>\n
            for j in range(args[1]):<\/p>\n
                result.append(func(i, j))<\/p>\n
        return result<\/p>\n
    return wrapper<\/p>\n
@loop_decorator<\/p>\n
def process_pair(i, j):<\/p>\n
    return (i, j)<\/p>\n
result = process_pair(3, 3)<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u88c5\u9970\u5668\u53ef\u4ee5\u4f7f\u591a\u91cd\u5faa\u73af\u7684\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u548c\u6a21\u5757\u5316\u3002<\/p>\n<\/p>\n
\u5341\u4e8c\u3001\u5143\u7f16\u7a0b<\/h3>\n<\/p>\n
\u5143\u7f16\u7a0b\u662f\u4e00\u79cd\u7f16\u5199\u4ee3\u7801\u751f\u6210\u4ee3\u7801\u7684\u6280\u672f\uff0c\u53ef\u4ee5\u7528\u4e8e\u751f\u6210\u591a\u91cd\u5faa\u73af\u7684\u4ee3\u7801\uff0c\u9002\u7528\u4e8e\u590d\u6742\u7684\u5faa\u73af\u7ed3\u6784\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
def generate_loop_code(n, m):<\/p>\n
    code = 'result = []\\n'<\/p>\n
    for i in range(n):<\/p>\n
        code += f'for i{i} in range({m}):\\n'<\/p>\n
        code += '    ' * (i + 1) + f'result.append(({", ".join([f"i{j}" for j in range(i+1)])}))\\n'<\/p>\n
    return code<\/p>\n
exec_code = generate_loop_code(3, 3)<\/p>\n
exec(exec_code)<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u5143\u7f16\u7a0b\uff0c\u6211\u4eec\u53ef\u4ee5\u52a8\u6001\u751f\u6210\u591a\u91cd\u5faa\u73af\u7684\u4ee3\u7801\uff0c\u63d0\u9ad8\u7075\u6d3b\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<\/p>\n
\u5341\u4e09\u3001\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668<\/h3>\n<\/p>\n
\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u53ef\u4ee5\u7528\u4e8e\u7ba1\u7406\u8d44\u6e90\u7684\u5206\u914d\u548c\u91ca\u653e\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5728\u591a\u91cd\u5faa\u73af\u4e2d\u8fdb\u884c\u8d44\u6e90\u7ba1\u7406<\/a>\u7684\u4efb\u52a1\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
from contextlib import contextmanager<\/p>\n
@contextmanager<\/p>\n
def open_file(name):<\/p>\n
    f = open(name, 'w')<\/p>\n
    try:<\/p>\n
        yield f<\/p>\n
    finally:<\/p>\n
        f.close()<\/p>\n
with open_file('output.txt') as f:<\/p>\n
    for i in range(3):<\/p>\n
        for j in range(3):<\/p>\n
            f.write(f'{i}, {j}\\n')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u53ef\u4ee5\u786e\u4fdd\u8d44\u6e90\u7684\u6b63\u786e\u7ba1\u7406\uff0c\u907f\u514d\u8d44\u6e90\u6cc4\u6f0f\u3002<\/p>\n<\/p>\n
\u5341\u56db\u3001\u5d4c\u5957\u51fd\u6570<\/h3>\n<\/p>\n
\u901a\u8fc7\u5c06\u591a\u91cd\u5faa\u73af\u7684\u4ee3\u7801\u5c01\u88c5\u5230\u5d4c\u5957\u51fd\u6570\u4e2d\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u6a21\u5757\u5316\u7a0b\u5ea6\u548c\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
def generate_pairs(n, m):<\/p>\n
    def inner(i, j):<\/p>\n
        return (i, j)<\/p>\n
    result = []<\/p>\n
    for i in range(n):<\/p>\n
        for j in range(m):<\/p>\n
            result.append(inner(i, j))<\/p>\n
    return result<\/p>\n
result = generate_pairs(3, 3)<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5d4c\u5957\u51fd\u6570\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u52a0\u6e05\u6670\uff0c\u4fbf\u4e8e\u7ef4\u62a4\u3002<\/p>\n<\/p>\n
\u5341\u4e94\u3001\u7c7b\u548c\u5bf9\u8c61<\/h3>\n<\/p>\n
\u901a\u8fc7\u5c06\u591a\u91cd\u5faa\u73af\u7684\u4ee3\u7801\u5c01\u88c5\u5230\u7c7b\u4e2d\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u91cd\u7528\u6027\u548c\u6269\u5c55\u6027\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
class PairGenerator:<\/p>\n
    def __init__(self, n, m):<\/p>\n
        self.n = n<\/p>\n
        self.m = m<\/p>\n
    def generate(self):<\/p>\n
        result = []<\/p>\n
        for i in range(self.n):<\/p>\n
            for j in range(self.m):<\/p>\n
                result.append((i, j))<\/p>\n
        return result<\/p>\n
generator = PairGenerator(3, 3)<\/p>\n
result = generator.generate()<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u7c7b\u548c\u5bf9\u8c61\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u52a0\u9762\u5411\u5bf9\u8c61\uff0c\u6613\u4e8e\u6269\u5c55\u3002<\/p>\n<\/p>\n
\u5341\u516d\u3001\u88c5\u9970\u6a21\u5f0f<\/h3>\n<\/p>\n
\u88c5\u9970\u6a21\u5f0f\u662f\u4e00\u79cd\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u53ef\u4ee5\u7528\u4e8e\u52a8\u6001\u5730\u6dfb\u52a0\u529f\u80fd\u5230\u5bf9\u8c61\u4e2d\uff0c\u9002\u7528\u4e8e\u9700\u8981\u7075\u6d3b\u6269\u5c55\u529f\u80fd\u7684\u591a\u91cd\u5faa\u73af\u4efb\u52a1\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
class BaseGenerator:<\/p>\n
    def generate(self, n, m):<\/p>\n
        result = []<\/p>\n
        for i in range(n):<\/p>\n
            for j in range(m):<\/p>\n
                result.append((i, j))<\/p>\n
        return result<\/p>\n
class Decorator:<\/p>\n
    def __init__(self, generator):<\/p>\n
        self.generator = generator<\/p>\n
    def generate(self, n, m):<\/p>\n
        result = self.generator.generate(n, m)<\/p>\n
        return [(x[0] * 2, x[1] * 2) for x in result]<\/p>\n
generator = Decorator(BaseGenerator())<\/p>\n
result = generator.generate(3, 3)<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u88c5\u9970\u6a21\u5f0f\u53ef\u4ee5\u52a8\u6001\u5730\u6dfb\u52a0\u529f\u80fd\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u3002<\/p>\n<\/p>\n
\u5341\u4e03\u3001\u7b56\u7565\u6a21\u5f0f<\/h3>\n<\/p>\n
\u7b56\u7565\u6a21\u5f0f\u662f\u4e00\u79cd\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u53ef\u4ee5\u7528\u4e8e\u5b9a\u4e49\u4e00\u7cfb\u5217\u7b97\u6cd5\uff0c\u5c06\u6bcf\u4e2a\u7b97\u6cd5\u5c01\u88c5\u8d77\u6765\uff0c\u5e76\u4f7f\u5b83\u4eec\u53ef\u4ee5\u4e92\u6362\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n
class Strategy:<\/p>\n
    def execute(self, n, m):<\/p>\n
        raise NotImplementedError<\/p>\n
class ConcreteStrategyA(Strategy):<\/p>\n
    def execute(self, n, m):<\/p>\n
        return [(i, j) for i in range(n) for j in range(m)]<\/p>\n
class ConcreteStrategyB(Strategy):<\/p>\n
    def execute(self, n, m):<\/p>\n
        result = []<\/p>\n
        for i in range(n):<\/p>\n
            for j in range(m):<\/p>\n
                result.append((i, j))<\/p>\n
        return result<\/p>\n
class Context:<\/p>\n
    def __init__(self, strategy):<\/p>\n
        self.strategy = strategy<\/p>\n
    def execute_strategy(self, n, m):<\/p>\n
        return self.strategy.execute(n, m)<\/p>\n
context = Context(ConcreteStrategyA())<\/p>\n
result = context.execute_strategy(3, 3)<\/p>\n
print(result)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u7b56\u7565\u6a21\u5f0f\u53ef\u4ee5\u4f7f\u7b97\u6cd5\u53ef\u4ee5\u4e92\u6362\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0a\u591a\u79cd\u65b9\u6cd5\u548c\u6280\u672f\uff0cPython\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u51b3\u591a\u91cd\u5faa\u73af\u7684\u95ee\u9898\u3002\u8fd9\u4e9b\u65b9\u6cd5\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u7ef4\u62a4\u6027\uff0c\u8fd8\u63d0\u5347\u4e86\u8fd0\u884c\u6548\u7387\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u7684\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u4f18\u5316\u591a\u91cd\u5faa\u73af\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5728Python\u4e2d\uff0c\u5982\u4f55\u4f18\u5316\u591a\u91cd\u5faa\u73af\u7684\u6027\u80fd\uff1f<\/strong>
\u4f18\u5316\u591a\u91cd\u5faa\u73af\u7684\u6027\u80fd\u53ef\u4ee5\u901a\u8fc7\u51e0\u79cd\u65b9\u6cd5\u5b9e\u73b0\u3002\u9996\u5148\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u6216\u751f\u6210\u5668\u8868\u8fbe\u5f0f\u6765\u66ff\u4ee3\u4f20\u7edf\u7684for\u5faa\u73af\uff0c\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u4ee3\u7801\u884c\u6570\u5e76\u63d0\u9ad8\u53ef\u8bfb\u6027\u3002\u5176\u6b21\uff0c\u5229\u7528Python\u7684\u5185\u7f6e\u51fd\u6570\u5982map()<\/code>\u548cfilter()<\/code>\u4e5f\u53ef\u4ee5\u63d0\u5347\u6027\u80fd\u3002\u6b64\u5916\uff0c\u4f7f\u7528NumPy\u7b49\u9ad8\u6548\u7684\u6570\u503c\u8ba1\u7b97\u5e93\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u5904\u7406\u5927\u6570\u636e\u96c6\u65f6\u7684\u6548\u7387\uff0c\u907f\u514d\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u8fdb\u884c\u5143\u7d20\u7ea7\u7684\u64cd\u4f5c\u3002<\/p>\n
\u5728\u5904\u7406\u591a\u91cd\u5faa\u73af\u65f6\uff0c\u5982\u4f55\u907f\u514d\u4ee3\u7801\u7684\u590d\u6742\u6027\uff1f<\/strong>
\u907f\u514d\u4ee3\u7801\u590d\u6742\u6027\u7684\u4e00\u79cd\u6709\u6548\u65b9\u6cd5\u662f\u5c06\u591a\u91cd\u5faa\u73af\u63d0\u53d6\u5230\u5355\u72ec\u7684\u51fd\u6570\u4e2d\u3002\u8fd9\u6837\u53ef\u4ee5\u589e\u52a0\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u8bfb\u6027\u3002\u6bcf\u4e2a\u51fd\u6570\u5e94\u4e13\u6ce8\u4e8e\u4e00\u4e2a\u7279\u5b9a\u7684\u4efb\u52a1\uff0c\u7b80\u5316\u4e3b\u903b\u8f91\u3002\u53e6\u5916\uff0c\u4f7f\u7528\u5b57\u5178\u6216\u96c6\u5408\u6765\u5b58\u50a8\u4e2d\u95f4\u7ed3\u679c\uff0c\u53ef\u4ee5\u51cf\u5c11\u91cd\u590d\u8ba1\u7b97\uff0c\u4ece\u800c\u7b80\u5316\u5faa\u73af\u903b\u8f91\u3002<\/p>\n
\u5728Python\u4e2d\uff0c\u6709\u54ea\u4e9b\u66ff\u4ee3\u591a\u91cd\u5faa\u73af\u7684\u7b97\u6cd5\u6216\u6570\u636e\u7ed3\u6784\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u6709\u591a\u79cd\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5\u53ef\u4ee5\u66ff\u4ee3\u591a\u91cd\u5faa\u73af\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u96c6\u5408\u53ef\u4ee5\u5728\u67e5\u627e\u64cd\u4f5c\u4e2d\u663e\u8457\u63d0\u9ad8\u6548\u7387\uff0c\u901a\u5e38\u53ef\u4ee5\u5c06\u65f6\u95f4\u590d\u6742\u5ea6\u4eceO(n)\u964d\u4f4e\u5230O(1)\u3002\u56fe\u7b97\u6cd5\u548c\u52a8\u6001\u89c4\u5212\u4e5f\u662f\u6709\u6548\u7684\u66ff\u4ee3\u65b9\u6848\uff0c\u7279\u522b\u662f\u5728\u89e3\u51b3\u8def\u5f84\u548c\u7ec4\u5408\u95ee\u9898\u65f6\u3002\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u51cf\u5c11\u5faa\u73af\u7684\u5d4c\u5957\u5c42\u6570\uff0c\u4ece\u800c\u63d0\u9ad8\u7b97\u6cd5\u7684\u6574\u4f53\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5217\u8868\u751f\u6210\u5f0f\u3001\u51fd\u6570\u548c\u9012\u5f52\u3001\u751f\u6210\u5668\u7b49\u65b9\u6cd5\u89e3\u51b3\u591a\u91cd\u5faa\u73af\u7684\u95ee\u9898\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u4e0d\u4ec5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb […]","protected":false},"author":3,"featured_media":1168473,"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\/1168466"}],"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=1168466"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1168466\/revisions"}],"predecessor-version":[{"id":1168474,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1168466\/revisions\/1168474"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1168473"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1168466"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1168466"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1168466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}