如何使用get_actors()函数获取当前存在于世界中的所有actors
时间: 2024-03-23 18:37:56 浏览: 130
您可以使用以下代码来获取当前存在于世界中的所有actors:
```
import carla
# 连接到Carla服务器
client = carla.Client('localhost', 2000)
client.set_timeout(10.0)
# 获取当前世界
world = client.get_world()
# 获取所有actors
actor_list = world.get_actors()
# 输出所有actors的ID和类型
for actor in actor_list:
print("Actor ID: {}, Type: {}".format(actor.id, actor.type_id))
```
这段代码首先连接到Carla服务器,然后获取当前世界并使用`get_actors()`函数获取所有actors。接着,它遍历所有actors并输出每个actor的ID和类型。您可以根据需要修改输出内容。
相关问题
请问为什么下列代码会报错,请修改并优化: @staticmethod def good_actors(): actors_info = {} @films_bp.route('/good_actors', methods=['GET']) def good_actors(): try: result = FilmInfo.good_actors() #直接调用Fileinfo类中构建的静态方法good_actors() logging.info('获得各年份电影数量序列') return jsonify(result) except Exception as e: logging.error('Error occurred while retrieving students from the database. Error message: {}'.format(str(e))) return jsonify({"error": str(e)}) # 查询满足条件的电影信息 films = FilmInfo.query.all() for film in films: actors_str = film.actor.strip("[]") # 去除方括号和单引号 actors = [actor.strip("'") for actor in actors_str.split(",")] # 统计演员参与的电影数量 for actor in actors: info = actors_info.get(actor, {'total_films': 0, 'best_films': 0, 'worst_films': 0, 'average_films': 0}) info['total_films'] += 1 actors_info[actor] = info # 判断电影评分并更新好片、烂片和一般片数量 if film.rate is not None: for actor in actors: info = actors_info.get(actor, {'total_films': 0, 'best_films': 0, 'worst_films': 0, 'average_films': 0}) if film.rate >= 8.5: info['best_films'] += 1 elif film.rate < 6: info['worst_films'] += 1 else: info['average_films'] += 1 actors_info[actor] = info # 计算好片占比并排序 good_actors = sorted(actors_info.items(), key=lambda x: x[1]['best_films'] / x[1]['total_films'], reverse=True)[:10] return good_actors
这段代码会报错的原因是,定义了两个同名的函数good_actors(),一个是FilmInfo类中的静态方法,另一个是films_bp蓝图中的视图函数。这会导致视图函数覆盖了静态方法,导致程序无法正确执行。另外,在视图函数中查询了所有电影信息,这可能会导致性能问题。
可以将FilmInfo类中的静态方法名称修改为其他名称,如get_good_actors()。然后在视图函数中调用该方法,获取演员信息。同时,可以通过在查询时指定只查询演员信息和评分信息来优化查询性能。最终代码如下:
```
@films_bp.route('/good_actors', methods=['GET'])
def get_good_actors():
try:
actors_info = {}
# 查询演员参与的电影数量
films = db.session.query(FilmInfo.actor, FilmInfo.rate).filter(FilmInfo.actor != None).all()
for film in films:
actors_str = film.actor.strip('[]')
# 去除方括号和单引号
actors = [actor.strip("'") for actor in actors_str.split(',')]
# 统计演员参与的电影数量
for actor in actors:
info = actors_info.get(actor, {'total_films': 0, 'best_films': 0, 'worst_films': 0, 'average_films': 0})
info['total_films'] += 1
actors_info[actor] = info
# 判断电影评分并更新好片、烂片和一般片数量
if film.rate is not None:
for actor in actors:
info = actors_info.get(actor, {'total_films': 0, 'best_films': 0, 'worst_films': 0, 'average_films': 0})
if film.rate >= 8.5:
info['best_films'] += 1
elif film.rate < 6:
info['worst_films'] += 1
else:
info['average_films'] += 1
actors_info[actor] = info
# 计算好片占比并排序
good_actors = sorted(actors_info.items(), key=lambda x: x[1]['best_films'] / x[1]['total_films'], reverse=True)[:10]
return jsonify(good_actors)
except Exception as e:
logging.error('Error occurred while retrieving students from the database. Error message: {}'.format(str(e)))
return jsonify({"error": str(e)})
```
注意,在查询演员信息时,使用了filter()方法指定只查询演员不为空的电影信息,并且只查询演员和评分两个字段,以提高查询性能。
import requests from bs4 import BeautifulSoup import openpyxl def get_movie_data(year): url = f'https://maoyan.com/films?year={year}' headers = {'User-Agent': 'Mozilla/5.0'} response = requests.get(url, headers=headers) if response.status_code == 200: soup = BeautifulSoup(response.content, 'html.parser') movies = soup.select('.movie-item-title') movie_data = [] for movie in movies: movie_link = 'https://maoyan.com' + movie.a['href'] movie_data.append(get_movie_details(movie_link)) return movie_data else: print(f"Failed to fetch data for year {year}") return [] def get_movie_details(url): headers = {'User-Agent': 'Mozilla/5.0'} response = requests.get(url, headers=headers) if response.status_code == 200: soup = BeautifulSoup(response.content, 'html.parser') movie_name = soup.select_one('h1.name').text.strip() release_date = soup.select_one('.info-release').text.strip() genre = soup.select_one('.info-category').text.strip() director = soup.select_one('.info-director').text.strip() actors = [actor.text.strip() for actor in soup.select('.info-actor a')] maoyan_score = soup.select_one('.score-num').text.strip() box_office = soup.select_one('.info-num').text.strip() return { '电影名称': movie_name, '上映日期': release_date, '影片类型': genre, '导演': director, '演员': ', '.join(actors), '猫眼口碑': maoyan_score, '累计票房': box_office } else: print(f"Failed to fetch details for {url}") return {} def save_to_excel(data, filename): wb = openpyxl.Workbook() ws = wb.active headers = ['电影名称', '上映日期', '影片类型', '导演', '演员', '猫眼口碑', '累计票房'] ws.append(headers) for movie in data: row_data = [movie.get(header, '') for header in headers] ws.append(row_data) wb.save(filename) print(f"Data saved to {filename}") if __name__ == '__main__': years = range(2017, 2021) all_movie_data = [] for year in years: movie_data = get_movie_data(year) all_movie_data.extend(movie_data) save_to_excel(all_movie_data, 'maoyan_movies_2017_to_2020.xlsx')
这段代码是一个Python脚本,用于从猫眼电影网站上爬取指定年份的电影数据,并保存到Excel文件中。
代码使用了requests库来发送HTTP请求,使用BeautifulSoup库来解析HTML内容,使用openpyxl库来操作Excel文件。
主要功能包括:
- `get_movie_data(year)`函数:根据指定年份获取电影数据的函数。
- `get_movie_details(url)`函数:获取电影详情的函数。
- `save_to_excel(data, filename)`函数:将电影数据保存到Excel文件的函数。
在主程序中,通过循环遍历2017年到2020年的年份,调用`get_movie_data(year)`函数获取电影数据,然后将所有电影数据保存到名为`maoyan_movies_2017_to_2020.xlsx`的Excel文件中。
注意:爬取网站数据时,请遵守网站的相关规定和法律法规,不要过度请求或滥用。
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