python写一个多线程爬虫
时间: 2023-05-17 21:07:50 浏览: 180
可以使用Python的多线程库threading来实现多线程爬虫。以下是一个简单的示例代码:
```python
import threading
import requests
def fetch_url(url):
response = requests.get(url)
print(response.text)
urls = ['https://www.google.com', 'https://www.baidu.com', 'https://www.yahoo.com']
threads = []
for url in urls:
t = threading.Thread(target=fetch_url, args=(url,))
threads.append(t)
t.start()
for t in threads:
t.join()
```
这个代码会创建三个线程,每个线程都会去请求一个URL并打印出响应内容。最后,主线程会等待所有子线程执行完毕后再退出。
相关问题
python举一个多线程爬虫的示例
可以使用Python的threading模块来实现多线程爬虫。以下是一个简单的示例:
```python
import threading
import requests
def fetch_url(url):
response = requests.get(url)
print(response.text)
urls = ['https://www.baidu.com', 'https://www.google.com', 'https://www.github.com']
threads = []
for url in urls:
t = threading.Thread(target=fetch_url, args=(url,))
threads.append(t)
t.start()
for t in threads:
t.join()
```
这个示例中,我们定义了一个fetch_url函数,用于获取指定URL的内容。然后,我们创建了一个包含多个URL的列表,并使用threading模块创建了多个线程,每个线程都调用fetch_url函数来获取指定URL的内容。最后,我们使用join方法等待所有线程执行完毕。
帮我写一个多线程爬虫python代码
答:以下是一段多线程爬虫python代码:import threading
import requestsdef fetch_content(url):
response = requests.get(url)
print(response.content)urls = [
'http://example.com/1',
'http://example.com/2',
'http://example.com/3',
]threads = [threading.Thread(target=fetch_content, args=(url,)) for url in urls]for thread in threads:
thread.start()for thread in threads:
thread.join()
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