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网站如何做cc防护,西安房产网签查询系统,做网站的如何开发业务,重庆本地生活平台一#xff1a;主要的知识点 1、说明 本文只是教程内容的一小段#xff0c;因博客字数限制#xff0c;故进行拆分。主教程链接#xff1a;vtk教程——逐行解析官网所有Python示例-CSDN博客 2、知识点纪要 本段代码主要涉及的有①根据类名寻找示例代码 二#xff1a;代码…一主要的知识点1、说明本文只是教程内容的一小段因博客字数限制故进行拆分。主教程链接vtk教程——逐行解析官网所有Python示例-CSDN博客2、知识点纪要本段代码主要涉及的有①根据类名寻找示例代码二代码及注释#!/usr/bin/env python3 import json import os import random import tempfile from datetime import datetime from operator import itemgetter from pathlib import Path from urllib.error import HTTPError from urllib.request import urlretrieve def get_program_parameters(): import argparse description Get examples that use a particular VTK class for a given language. epilogue The JSON file needed by this script is obtained from the gh-pages branch of the vtk-examples GitHub site. It is stored in your tempfile directory. If you change the URL to the JSON file, remember that there is a ten minute wait before you can overwrite the last downloaded file. To force the download specify -o on the command line. Here is the URL for an alternative site for testing: https://raw.githubusercontent.com/ajpmaclean/web-test/gh-pages/src/Coverage/vtk_vtk-examples_xref.json parser argparse.ArgumentParser(descriptiondescription, epilogepilogue, formatter_classargparse.RawTextHelpFormatter) # parser.add_argument(vtk_class, defaultvtkFiltersSources,helpThe desired VTK class.) # parser.add_argument(language, defaultPython,helpThe desired language, one of: CSharp, Cxx, Java, Python.) parser.add_argument(-a, --all_values, actionstore_true, helpAll examples (Warning: Can be a very long list).) parser.add_argument(-n, --number, typeint, default5, helpThe maximum number of examples.) parser.add_argument(-m, --md, actionstore_true, helpDisplay links in markdown inline format e.g. [label](URL).) parser.add_argument(-j, --json_xref_url, defaulthttps://raw.githubusercontent.com/Kitware/vtk-examples/gh-pages/src/Coverage/vtk_vtk-examples_xref.json, helpThe URL for the JSON cross-reference file.) parser.add_argument(-o, --overwrite, actionstore_true, helpForce an initial download of the JSON cross-reference file.) args parser.parse_args() return args.all_values, args.md, args.number, args.json_xref_url, args.overwrite def download_file(dl_path, dl_url, overwriteFalse): Use the URL to get a file. :param dl_path: The path to download the file to. :param dl_url: The URL of the file. :param overwrite: If true, do a download even if the file exists. :return: The path to the file as a pathlib Path. file_name dl_url.split(/)[-1] # Create necessary subdirectories in the dl_path # (if they dont exist). Path(dl_path).mkdir(parentsTrue, exist_okTrue) # Download if it doesnt exist in the directory overriding if overwrite is True. path Path(dl_path, file_name) if not path.is_file() or overwrite: try: urlretrieve(dl_url, path) except HTTPError as e: raise RuntimeError(fFailed to download {dl_url}. {e.reason}) return path def get_examples(d, vtk_class, lang, all_valuesFalse, number5, md_fmtFalse): For the VTK Class and language return the total number of examples and a list of examples. :param d: The dictionary. :param vtk_class: The VTK Class e.g. vtkActor. :param lang: The language, e.g. Cxx. :param all_values: True if all examples are needed. :param number: The number of values. :param md_fmt: Use Markdown format with label and URL defined together. :return: Total number of examples and a list of examples. try: kv d[vtk_class][lang].items() except KeyError: return None, None if len(kv) number: if all_values: samples list(kv) else: samples random.sample(list(kv), number) else: samples kv if md_fmt: links [f[{s.rsplit(/, 1)[1]}]({s}) for s in sorted(map(itemgetter(1), samples))] else: links sorted(map(itemgetter(1), samples)) return len(links), links def get_crossref_dict(ref_dir, xref_url, overwriteFalse): Download and return the json cross-reference file. This function ensures that the dictionary is recent. :param ref_dir: The directory where the file will be downloaded. :param xref_url: The URL for the JSON cross-reference file. :param overwrite: If true, do a download even if the file exists. :return: The dictionary cross-referencing vtk classes to examples. path download_file(ref_dir, xref_url, overwriteoverwrite) if not path.is_file(): print(fThe path: {str(path)} does not exist.) return None dt datetime.today().timestamp() - os.path.getmtime(path) # Force a new download if the time difference is 10 minutes. if dt 600: path download_file(ref_dir, xref_url, overwriteTrue) with open(path) as json_file: return json.load(json_file) def main(): all_values, md, number, xref_url, overwrite get_program_parameters() vtk_class vtkNamedColors language Python language language.lower() available_languages {k.lower(): k for k in [CSharp, Cxx, Java, Python, PythonicAPI]} available_languages.update({cpp: Cxx, c: Cxx, c#: CSharp}) if language not in available_languages: print(fThe language: {language} is not available.) tmp , .join(sorted([lang for lang in set(available_languages.values())])) print(fChoose one of these: {tmp}.) return else: language available_languages[language] xref_dict get_crossref_dict(tempfile.gettempdir(), xref_url, overwrite) if xref_dict is None: print(The dictionary cross-referencing vtk classes to examples was not downloaded.) return total_number, examples get_examples(xref_dict, vtk_class, language, all_valuesall_values, numbernumber, md_fmtmd) if examples: if total_number number or all_values: print(fVTK Class: {vtk_class}, language: {language}\n fNumber of example(s): {total_number}.) else: print(fVTK Class: {vtk_class}, language: {language}\n fNumber of example(s): {total_number} with {number} random sample(s) shown.) print(\n.join(examples)) else: print(fNo examples for the VTK Class: {vtk_class} and language: {language}) if __name__ __main__: main()