2-3、from import多个内容from My_module importname,read,read22-4、给导入的内容起别名from My_module importname as n,read as r,read2 as r22-5、from import *和 __all__关系 1,只有from import *没有__all__的时候,My_module的所有变量都可以在本文件中使用from My_module import * print(name...
运行python文件,发现 BeautifulSoup 模块 报错 Traceback (most recent call last):File"xxx.py",line10,in<module> from bs4 import BeautifulSoupFile"/Library/Python/2.7/site-packages/bs4/__init__.py",line30,in<module> from .builder import builder_registry, ParserRejectedMarkupFile"/Library/Python/...
data_soup.find_all(attrs={"data-foo": "value"}) 按CSS搜索: 按照CSS类名搜索tag的功能非常实用,但标识CSS类名的关键字class在Python中是保留字,使用class做参数会导致语法错误.从Beautiful Soup的 4.1.1 版本开始,可以通过class_参数搜索有指定CSS类名的tag: soup.find_all('li',class_="have-img") s...
File"<stdin>", line1,in<module>File"C:\Users\lei\AppData\Local\Programs\Python\Python35\lib\site-packages\beautifulsoup4-4.5.0-py3.5.egg\bs4\__init__.py", line 191, in __init__UnicodeDecodeError:'gbk'codec can't decode byte 0xbf in position 2: illegal multibyte sequence BeautifulSoup...
# python3 版本get_installed_distributions方法藏得很深 from pip._internal.utils.misc import get_installed_distributions get_installed_distributions() # 最终代码: from pip._internal.utils.misc import get_installed_distributions for module_name in get_installed_distributions(): ...
这就有两个方案：一是利用vagrant打包python环境的box；二是创建一个python环境的docker镜像。
Windows下安装BeautifulSoup4完后，from bs4 import BeautifulSoup报错：>>> from bs4 import BeautifulSoupTraceback (most recent call last): File "<stdin>", line 1, in <module> File "C:\Users\xxx\AppData\Local\Programs\Python\Python35\beautifulsoup4-4.5.0\bs4\__init__.py", line 53 &#...
Writing E:\Program Files\python27\ArcGIS10.2\Lib\site-packages\beautifulsoup4-4.1.0-py2.7.egg-infoC:\Users\Administrator\AppData\Local\Programs\Python\Python35-32>pythonPython 3.5.1 (v3.5.1:37a07cee5969, Dec 6 2015, 01:38:48) [MSC v.1900 32 bit (Intel)] on win...
File "<pyshell#1>", line 1, in <module> from bs4 import BeautifulSoup File "D:\Python\lib\site-packages\bs4\__init__.py", line 29, in <module> from .builder import builder_registry File "D:\Python\lib\site-packages\bs4\builder\__init__.py", line 294, in <module> from . ...
Python BeautifulSoup simple example In the first example, we use BeautifulSoup module to get three tags. simple.py #!/usr/bin/python from bs4 import BeautifulSoup with open('index.html', 'r') as f: contents = f.read() soup = BeautifulSoup(contents, 'lxml') ...