{"id":1060236,"date":"2024-12-31T15:32:09","date_gmt":"2024-12-31T07:32:09","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1060236.html"},"modified":"2024-12-31T15:32:11","modified_gmt":"2024-12-31T07:32:11","slug":"python%e5%a6%82%e4%bd%95%e7%88%ac%e5%8f%963d%e6%a8%a1%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1060236.html","title":{"rendered":"python\u5982\u4f55\u722c\u53d63d\u6a21\u578b"},"content":{"rendered":"

\"python\u5982\u4f55\u722c\u53d63d\u6a21\u578b\"<\/p>\n

Python\u722c\u53d63D\u6a21\u578b\u7684\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528\u73b0\u6210\u7684\u722c\u866b\u5e93\u3001\u89e3\u6790\u7f51\u9875\u5185\u5bb9\u3001\u4fdd\u5b583D\u6a21\u578b\u6587\u4ef6\u3002<\/strong> <\/p>\n<\/p>\n

\u5176\u4e2d\uff0c\u4f7f\u7528\u73b0\u6210\u7684\u722c\u866b\u5e93<\/strong>\u662f\u6700\u4e3a\u63a8\u8350\u7684\u65b9\u5f0f\u3002\u8fd9\u4e9b\u5e93\u63d0\u4f9b\u4e86\u4fbf\u6377\u7684API\u548c\u4e30\u5bcc\u7684\u529f\u80fd\uff0c\u80fd\u591f\u5feb\u901f\u5b9e\u73b03D\u6a21\u578b\u7684\u722c\u53d6\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Python\u722c\u53d63D\u6a21\u578b\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528\u73b0\u6210\u7684\u722c\u866b\u5e93<\/h3>\n<\/p>\n

Python\u4e2d\u6709\u8bb8\u591a\u5f3a\u5927\u7684\u722c\u866b\u5e93\uff0c\u6bd4\u5982Scrapy\u3001BeautifulSoup\u548cSelenium\u7b49\u3002\u4e0b\u9762\u4ee5Scrapy\u4e3a\u4f8b\uff0c\u4ecb\u7ecd\u5982\u4f55\u722c\u53d63D\u6a21\u578b\u3002<\/p>\n<\/p>\n

1\u3001\u5b89\u88c5Scrapy<\/h4>\n<\/p>\n

\u9996\u5148\uff0c\u9700\u8981\u5b89\u88c5Scrapy\u5e93\u3002\u53ef\u4ee5\u901a\u8fc7pip\u6765\u5b89\u88c5\uff1a<\/p>\n<\/p>\n

pip install scrapy<\/p>\n
<\/code><\/pre>\n<\/p>\n
2\u3001\u521b\u5efaScrapy\u9879\u76ee<\/h4>\n<\/p>\n
\u4f7f\u7528Scrapy\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u722c\u866b\u9879\u76ee\uff1a<\/p>\n<\/p>\n
scrapy startproject model_scraper<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fdb\u5165\u9879\u76ee\u76ee\u5f55\uff0c\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u722c\u866b\uff1a<\/p>\n<\/p>\n
cd model_scraper<\/p>\n
scrapy genspider example example.com<\/p>\n
<\/code><\/pre>\n<\/p>\n
3\u3001\u7f16\u5199\u722c\u866b\u4ee3\u7801<\/h4>\n<\/p>\n
\u5728spiders<\/code>\u76ee\u5f55\u4e0b\u627e\u5230example.py<\/code>\u6587\u4ef6\uff0c\u7f16\u5199\u722c\u866b\u4ee3\u7801\u3002\u5047\u8bbe\u76ee\u6807\u7f51\u7ad9\u662f\u4e00\u4e2a3D\u6a21\u578b\u5206\u4eab\u7f51\u7ad9\uff0c\u9700\u8981\u722c\u53d6\u6a21\u578b\u7684\u4e0b\u8f7d\u94fe\u63a5\u3002<\/p>\n<\/p>\n
import scrapy<\/p>\n
class ExampleSpider(scrapy.Spider):<\/p>\n
    name = 'example'<\/p>\n
    start_urls = ['http:\/\/example.com\/models']<\/p>\n
    def parse(self, response):<\/p>\n
        for model in response.css('div.model'):<\/p>\n
            model_url = model.css('a::attr(href)').get()<\/p>\n
            yield response.follow(model_url, self.parse_model)<\/p>\n
    def parse_model(self, response):<\/p>\n
        model_name = response.css('h1::text').get()<\/p>\n
        download_url = response.css('a.download::attr(href)').get()<\/p>\n
        yield {<\/p>\n
            'model_name': model_name,<\/p>\n
            'download_url': download_url<\/p>\n
        }<\/p>\n
<\/code><\/pre>\n<\/p>\n
4\u3001\u8fd0\u884c\u722c\u866b<\/h4>\n<\/p>\n
\u5728\u9879\u76ee\u76ee\u5f55\u4e0b\u8fd0\u884c\u722c\u866b\uff1a<\/p>\n<\/p>\n
scrapy crawl example<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u722c\u866b\u5c06\u4f1a\u6293\u53d63D\u6a21\u578b\u7684\u4e0b\u8f7d\u94fe\u63a5\uff0c\u5e76\u4fdd\u5b58\u5230\u8f93\u51fa\u7ed3\u679c\u4e2d\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u89e3\u6790\u7f51\u9875\u5185\u5bb9<\/h3>\n<\/p>\n
\u89e3\u6790\u7f51\u9875\u5185\u5bb9\u662f\u722c\u53d63D\u6a21\u578b\u7684\u5173\u952e\u6b65\u9aa4\u4e4b\u4e00\u3002\u901a\u5e38\u4f7f\u7528BeautifulSoup<\/code>\u5e93\u6765\u89e3\u6790HTML\u5185\u5bb9\u3002<\/p>\n<\/p>\n
1\u3001\u5b89\u88c5BeautifulSoup<\/h4>\n<\/p>\n
\u53ef\u4ee5\u901a\u8fc7pip\u6765\u5b89\u88c5BeautifulSoup\u548crequests\u5e93\uff1a<\/p>\n<\/p>\n
pip install beautifulsoup4 requests<\/p>\n
<\/code><\/pre>\n<\/p>\n
2\u3001\u7f16\u5199\u89e3\u6790\u4ee3\u7801<\/h4>\n<\/p>\n
\u5047\u8bbe\u5df2\u7ecf\u83b7\u53d6\u5230\u7f51\u9875\u7684HTML\u5185\u5bb9\uff0c\u63a5\u4e0b\u6765\u89e3\u6790\u6a21\u578b\u7684\u4e0b\u8f7d\u94fe\u63a5\u3002<\/p>\n<\/p>\n
import requests<\/p>\n
from bs4 import BeautifulSoup<\/p>\n
url = 'http:\/\/example.com\/models'<\/p>\n
response = requests.get(url)<\/p>\n
soup = BeautifulSoup(response.content, 'html.parser')<\/p>\n
models = soup.find_all('div', class_='model')<\/p>\n
for model in models:<\/p>\n
    model_name = model.find('h1').text<\/p>\n
    download_url = model.find('a', class_='download')['href']<\/p>\n
    print(f'Model Name: {model_name}, Download URL: {download_url}')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u4fdd\u5b583D\u6a21\u578b\u6587\u4ef6<\/h3>\n<\/p>\n
\u83b7\u53d6\u52303D\u6a21\u578b\u7684\u4e0b\u8f7d\u94fe\u63a5\u540e\uff0c\u9700\u8981\u5c06\u6a21\u578b\u6587\u4ef6\u4fdd\u5b58\u5230\u672c\u5730\u3002\u53ef\u4ee5\u4f7f\u7528requests<\/code>\u5e93\u6765\u4e0b\u8f7d\u6587\u4ef6\u3002<\/p>\n<\/p>\n
import requests<\/p>\n
def download_model(url, save_path):<\/p>\n
    response = requests.get(url)<\/p>\n
    with open(save_path, 'wb') as file:<\/p>\n
        file.write(response.content)<\/p>\n
download_url = 'http:\/\/example.com\/models\/model1.obj'<\/p>\n
save_path = 'models\/model1.obj'<\/p>\n
download_model(download_url, save_path)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u5904\u74063D\u6a21\u578b\u6587\u4ef6<\/h3>\n<\/p>\n
\u5904\u74063D\u6a21\u578b\u6587\u4ef6\u662f\u722c\u53d63D\u6a21\u578b\u7684\u6700\u540e\u4e00\u6b65\u3002\u53ef\u4ee5\u4f7f\u7528pywavefront<\/code>\u5e93\u6765\u52a0\u8f7d\u548c\u5904\u74063D\u6a21\u578b\u6587\u4ef6\u3002<\/p>\n<\/p>\n
1\u3001\u5b89\u88c5pywavefront<\/h4>\n<\/p>\n
\u53ef\u4ee5\u901a\u8fc7pip\u6765\u5b89\u88c5pywavefront\u5e93\uff1a<\/p>\n<\/p>\n
pip install pywavefront<\/p>\n
<\/code><\/pre>\n<\/p>\n
2\u3001\u52a0\u8f7d3D\u6a21\u578b\u6587\u4ef6<\/h4>\n<\/p>\n
\u4f7f\u7528pywavefront\u5e93\u52a0\u8f7d3D\u6a21\u578b\u6587\u4ef6\uff0c\u5e76\u8fdb\u884c\u4e00\u4e9b\u7b80\u5355\u7684\u5904\u7406\u3002<\/p>\n<\/p>\n
import pywavefront<\/p>\n
scene = pywavefront.Wavefront('models\/model1.obj')<\/p>\n
for name, material in scene.materials.items():<\/p>\n
    print(f'Material Name: {name}')<\/p>\n
    for vertex in material.vertices:<\/p>\n
        print(f'Vertex: {vertex}')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u901a\u8fc7\u4e0a\u8ff0\u6b65\u9aa4\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Python\u722c\u53d63D\u6a21\u578b\u3002\u9996\u5148\uff0c\u4f7f\u7528\u73b0\u6210\u7684\u722c\u866b\u5e93Scrapy\u6765\u6293\u53d63D\u6a21\u578b\u7684\u4e0b\u8f7d\u94fe\u63a5\uff1b\u5176\u6b21\uff0c\u4f7f\u7528BeautifulSoup\u89e3\u6790\u7f51\u9875\u5185\u5bb9\uff0c\u63d0\u53d6\u6a21\u578b\u4fe1\u606f\uff1b\u7136\u540e\uff0c\u901a\u8fc7requests\u5e93\u4e0b\u8f7d3D\u6a21\u578b\u6587\u4ef6\uff1b\u6700\u540e\uff0c\u4f7f\u7528pywavefront\u5e93\u52a0\u8f7d\u548c\u5904\u74063D\u6a21\u578b\u6587\u4ef6\u3002\u6574\u4e2a\u8fc7\u7a0b\u6db5\u76d6\u4e86\u4ece\u6293\u53d6\u7f51\u9875\u6570\u636e\u5230\u5904\u74063D\u6a21\u578b\u6587\u4ef6\u7684\u5b8c\u6574\u6d41\u7a0b\uff0c\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u5feb\u901f\u5b9e\u73b03D\u6a21\u578b\u7684\u722c\u53d6\u3002<\/p>\n<\/p>\n
\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5982\u679c\u4f60\u6709\u4efb\u4f55\u95ee\u9898\u6216\u5efa\u8bae\uff0c\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u7559\u8a00\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u4f7f\u7528Python\u722c\u53d63D\u6a21\u578b\u7f51\u7ad9\u7684\u6570\u636e\uff1f<\/strong>
\u5728\u4f7f\u7528Python\u722c\u53d63D\u6a21\u578b\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u9009\u62e9\u5408\u9002\u7684\u5e93\uff0c\u6bd4\u5982Requests\u548cBeautifulSoup\u3002\u901a\u8fc7Requests\u5e93\u53ef\u4ee5\u53d1\u9001HTTP\u8bf7\u6c42\u83b7\u53d6\u7f51\u9875\u5185\u5bb9\uff0c\u800cBeautifulSoup\u5219\u7528\u4e8e\u89e3\u6790HTML\u6587\u6863\u3002\u6839\u636e\u76ee\u6807\u7f51\u7ad9\u7684\u7ed3\u6784\uff0c\u63d0\u53d63D\u6a21\u578b\u7684\u4e0b\u8f7d\u94fe\u63a5\u3001\u540d\u79f0\u548c\u63cf\u8ff0\u7b49\u4fe1\u606f\u3002\u5728\u722c\u53d6\u8fc7\u7a0b\u4e2d\uff0c\u786e\u4fdd\u9075\u5faa\u7f51\u7ad9\u7684robots.txt\u534f\u8bae\uff0c\u907f\u514d\u5bf9\u670d\u52a1\u5668\u9020\u6210\u4e0d\u5fc5\u8981\u7684\u538b\u529b\u3002<\/p>\n
\u722c\u53d63D\u6a21\u578b\u65f6\u9700\u8981\u6ce8\u610f\u54ea\u4e9b\u6cd5\u5f8b\u548c\u9053\u5fb7\u95ee\u9898\uff1f<\/strong>
\u5728\u8fdb\u884c\u722c\u53d6\u65f6\uff0c\u7528\u6237\u5fc5\u987b\u4e86\u89e3\u7248\u6743\u548c\u4f7f\u7528\u6761\u6b3e\u3002\u5f88\u591a\u7f51\u7ad9\u5bf9\u4e8e3D\u6a21\u578b\u6709\u660e\u786e\u7684\u7248\u6743\u58f0\u660e\uff0c\u672a\u7ecf\u5141\u8bb8\u4e0b\u8f7d\u548c\u4f7f\u7528\u8fd9\u4e9b\u6a21\u578b\u53ef\u80fd\u4f1a\u6d89\u53ca\u4fb5\u6743\u3002\u56e0\u6b64\uff0c\u5728\u722c\u53d6\u4e4b\u524d\uff0c\u9605\u8bfb\u76f8\u5173\u7684\u6761\u6b3e\u548c\u6761\u4ef6\u662f\u5341\u5206\u5fc5\u8981\u7684\u3002\u540c\u65f6\uff0c\u5c0a\u91cd\u539f\u4f5c\u8005\u7684\u521b\u4f5c\u548c\u52b3\u52a8\u6210\u679c\u4e5f\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n
\u6709\u6ca1\u6709\u63a8\u8350\u7684Python\u5e93\u53ef\u4ee5\u5e2e\u52a9\u7b80\u53163D\u6a21\u578b\u7684\u722c\u53d6\u8fc7\u7a0b\uff1f<\/strong>
\u9664\u4e86Requests\u548cBeautifulSoup\uff0c\u8fd8\u6709\u4e00\u4e9b\u4e13\u95e8\u7528\u4e8e\u5904\u74063D\u6a21\u578b\u548c\u56fe\u5f62\u6570\u636e\u7684\u5e93\uff0c\u6bd4\u5982PyMesh\u548cOpen3D\u3002\u8fd9\u4e9b\u5e93\u53ef\u4ee5\u5e2e\u52a9\u7528\u6237\u5728\u5904\u74063D\u6a21\u578b\u65f6\u8fdb\u884c\u4e00\u4e9b\u989d\u5916\u7684\u64cd\u4f5c\uff0c\u6bd4\u5982\u683c\u5f0f\u8f6c\u6362\u3001\u6a21\u578b\u7b80\u5316\u7b49\u3002\u5982\u679c\u722c\u53d6\u540e\u8fd8\u9700\u8981\u5bf93D\u6a21\u578b\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u5904\u7406\uff0c\u8fd9\u4e9b\u5de5\u5177\u4f1a\u975e\u5e38\u6709\u5e2e\u52a9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u722c\u53d63D\u6a21\u578b\u7684\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528\u73b0\u6210\u7684\u722c\u866b\u5e93\u3001\u89e3\u6790\u7f51\u9875\u5185\u5bb9\u3001\u4fdd\u5b583D\u6a21\u578b\u6587\u4ef6\u3002 \u5176\u4e2d\uff0c\u4f7f\u7528\u73b0\u6210\u7684\u722c\u866b\u5e93\u662f […]","protected":false},"author":3,"featured_media":1060250,"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\/1060236"}],"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=1060236"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1060236\/revisions"}],"predecessor-version":[{"id":1060252,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1060236\/revisions\/1060252"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1060250"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1060236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1060236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1060236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}