# NameError: name 'bs4' is not defined ## 1. 错误原因 这个错误通常表明你的Python环境中没有正确安装或导入`BeautifulSoup`库,或者导入的方式不正确。`BeautifulSoup`是一个用于解析HTML和XML文档的库,在网页抓取和数据解析中非常常用,其包名通常为`bs4`。 ## 2. 解决方法 ### 2.1 检查是否已安装`Beaut...
name 'html_cont' is not defined#coding=utf-8 from bs4 import BeautifulSoup import re import urlparse class htmlparser(object): def _get_new_urls(self, page_url, soup): new_urls=set() links=soup.find_all('a',href=re.compile(r"/view/\d+\.htm")) for link in links: new_url=lin...
简介: 解决安装 ROS Melodic 后终端出现NameError: name ‘reload‘ is not defined的问题 解决在Ubuntu18.04下安装ROS Melodic后打开终端出现NameError: name ‘reload‘ is not defined的问题 方案一 将.bashrc、.zshrc中melodic的source注释掉,例如 # source /opt/ros/melodic/setup.zsh 方案二 将/opt/ros/...
refer to a deleted range name, or forget to put quotation marks around a text string in a formula. This error would have been noticed several times and this can appear for various reasons, the most common being misspelled formula.
然后会出现说__name__未定义from flask import Flask app=Flask(__name__) @app.route('/') def index(): return '<h1>Hello World!</h1>' if __name__=='__main__': app.run(debug==True) 这该怎么解决? 该装的包已经装了 努力的小牛牛 2019-03-28 21:41:08 源自:2-9 app.run相关...
我使用一个名为x的变量,x没有定义,并使用x与mako模板中的数字进行比较: <h1>helloworld</h1>为什么这句话不会导致异常或错误?为什么我不能在IPython中使用这句话?因为如果我在IPython中使用一个未定义的变量,它会告诉我变量不是突然定义的。 浏览1提问于2012-02-02得票数 3 回答已采纳 1回答 没有定义pytho...
<h1>Not Found</h1> <p>The requested URL was not found on this server.</p> <hr> <address>Apache/2.4.29 (Ubuntu) Server at 192.168.56.164 Port 80</address> </body></html> </html><!--passphrase:harder--> 返回页面提示口令: harder,但是这是什么的口令?先搁置一下,扫描一下目标站点有...
How to generate Label in Html from Span to H1 How to generate Line Chart along with data in excel sheet using NPOI Library How to generate PDF in asp.net using vb.net script How to generate the Invoice number in asp.net, the format is like SS01081300001. How to get a count from eac...
H1(children='Hello Dash'), html.Div(children=''' Dash: A web application framework for your data. '''), dcc.Graph( id='example-graph', figure=fig ) ]) if __name__ == '__main__': app.run_server(debug=True) gitlab.ci So far, I get no difference if I add selenium/stand...
INDEX NAME NOT YET ASSIGNED 1.2 CAS No. 2709328-44-7 1.3 CID 154803548 1.4 Molecular Formula C25H34N2O6 1.5 Inchi InChI=1S/C25H34N2O6/c26-9-11-29-13-15-31-17-18-32-16-14-30-12-10-27-25(28)33-19-24-22-7-3-1-5-20(22)21-6-2-4-8-23(21)24/h1-8,24H,9-19,26H2,...