Python 类不带参数，给定 3（使用 __init__）

Question

我正在尝试从 youtube 教程等创建网络爬虫。

我遇到了一个问题，我有一个不带参数的类（其他类确实带参数，结构或多或少相同）

类 (crawler.py)。我正在使用__init__，我在其中接受 3 个参数。

class Crawler:
    # class variables are shared among all crawler instances
    project_name = ''
    home_url = ''
    site_domain = ''
    # use set to speed up read/write process
    file_queue = ''
    queue = set()
    # use set to speed up read/write process
    file_crawled = ''
    crawled = set()

    def __init__(self, project_name, home_url, site_domain):
        Crawler.project_name = project_name
        Crawler.home_url = home_url
        Crawler.site_domain = site_domain
        Crawler.file_queue = Crawler.project_name + '/links_on_queue.txt'
        Crawler.file_crawled = Crawler.project_name + '/links_crawled.txt'
        self.starter(Crawler.site_domain)
        self.crawl_page('first_crawler', Crawler.home_url)

调用它的位置，在最后一行 (main.py)

import threading
from queue import Queue
# import from files
from crawler import Crawler
from domain_finder import *
from general_crawler_functions import *

# like multiple group members doing different parts, the program
# creates multiple thread that works simultaneously

PROJECT_NAME = 'Demoblaze'
HOME_URL = 'https://www.demoblaze.com/'
DOMAIN_NAME = get_domain(HOME_URL)
FILE_QUEUE = PROJECT_NAME + '/links_on_queue.txt'
FILE_CRAWLED = PROJECT_NAME + '/links_crawled.txt'
THREAD_COUNT = 4
# queue of threads
queue = Queue()
Crawler(PROJECT_NAME, HOME_URL, DOMAIN_NAME)

错误说这个类没有参数，3个给定

如果有帮助，我正在 Windows 上使用 PyCharm 社区

Answer 1

在 main.py 你已经从 crawler 导入了 Crawler

from crawler import Crawler

你应该导入你自己实现的爬虫。 使用

import Crawler

而不是

Crawler from crawler