ImportError：无法导入名称'BeautifulSoup'，已经安装的bs4

我正在从stackverflow上的一个线程尝试以下代码-使用python从网页中提取在特定单词之后的单词

我已将文件命名为s.py symantec.py之类的多种名称

from bs4 import BeautifulSoup
import requests

response = requests.get('http://vpnbook.com/freevpn')
soup = BeautifulSoup(response.text, 'html.parser')
pricing = soup.find(id = 'pricing')
first_column = pricing.find('div', {'class': 'one-third'})
for li in first_column.find('ul', {'class': 'disc'}):
    if 'password' in str(li).lower():
        password = li.find('strong').text
print(password)

我面临以下错误-

python s.py
Traceback (most recent call last):
  File "s.py", line 1, in <module>
    from bs4 import BeautifulSoup
  File "C:\Users\Abhinav\Documents\automation\bs4.py", line 1, in <module>
    from bs4 import BeautifulSoup
ImportError: cannot import name 'BeautifulSoup'