关于我们 """# 使用BeautifulSoup解析HTML内容，这里默认使用Python的html.parser作为解析器 # 你也可以指定其他解析器，如'lxml'或'html5lib'，但需要先安装它们 soup = BeautifulSoup(html_content, 'html.parser') # 提取并打印标签的文本内容 print("网页标题:", soup.title.string) # ...
from test1.lib.one import a print (a) #加载方式四 from test1.lib import * print (one.a) print (two.b) 注意直接使用第四种方式是不能正确导入test1.lib下的one子模块的,这就需要在目录下的__init__.py文件中定义好需要加载子模块的名称 test1/lib/__init__.py __all__=['one','two'] ...
2. 环境变量PYTHONPATH中的目录 3. Python安装目录(for Linux OS:/usr/local/lib/python When a module named spam is imported, the interpreter search for a file named spam.py in the current directory and then in list of directoried specified by the enviroment variable PYTHONPATH. This has the ...
博主在/usr/local/lib/python3.7/site-packages路径下新建python3_path.pth文件,内容如下: [root@localhost site-packages]# cat py3_path.pth /usr/local/python3/lib/python3.7/site-packages 再次验证Python搜索路径已经存在,且import相关包也不会报错。 参考资料:...
importsysfromcontextlibimportcontextmanager@contextmanagerdefadd_path(path):sys.path.append(path)try:...
Package libffi was not found in the pkg-config search path. Perhaps you should add the directory containing `libffi.pc' to the PKG_CONFIG_PATH environment variable No package 'libffi' found 于是设置:PKG_CONFIG_PATH export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH ...
img = cv2.imread(os.path.dirname(__file__) + "/img.jpg") return img is None [Out]: False 1. 2. 3. 4. 5. 6. 7. 2. 模块搜索路径问题 上述代码在PyCharm中运行得不错,但是当我们在控制台中运行时,会出现模块调用的错误:
When you include arguments, the search results shows pip install or conda install followed by the contents of the search box:Installing a package creates subfolders within the environment's Lib folder on the file system. For example, if you have Python 3.6 installed in ...
# 你也可以指定其他解析器,如'lxml'或'html5lib',但需要先安装它们 soup = BeautifulSoup(html_content, 'html.parser') # 提取并打印标签的文本内容 print("网页标题:", soup.title.string) # 网页标题: 示例网页 # 提取并打印标签的文本内容,这里使用class属性来定位 print("介绍内容...
Package libffi was not foundinthepkg-configsearch path. Perhaps you should add the directory containing `libffi.pc'to the PKG_CONFIG_PATH environment variable No package'libffi'found 于是设置:PKG_CONFIG_PATH export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH ...