1. 测试库放在python的site-packages 路径下 一般我们自己写的测试库会放在 python的site-packages 路径下,其他第三方库自动安装的也都在这个目录中,这样在导入库的时候,会自动识别。 在python安装目录下的 Lib\site-packages 目录下 新建一个目录,目录名就是库名,如 NewLibrary 在新建的NewLibr
When we want to update packages in Python. Firstly, we may check the packages that are already installed in it. Check package's version: 1. To check a certain package's version, type the followings inPython terminal import numpy as np print(np.__version__) There are 2 '_' at both ...
... print(f"bin called W")... defbingo(self):... self.bin()... self.go()... w =W()... w.bingo()...bin called inXbin called Wgo called Y方法解析顺序对于W类的实例（第22行），当我们调用bingo()方法时，此方法在其自己的类中解析，因为它是在类中定义的（第18-20...
importpkg_resources# 获取所有已安装的包installed_packages = pkg_resources.working_set# 打印所有包及其版本forpackageininstalled_packages:print(f"{package.key}=={package.version}")# 检查特定包是否存在package_name ="numpy"try: version = pkg_resources.get_distribution(package_name).versionprint(f"{pa...
print(installed_packages_list) Output: ['absl-py==0.7.0', 'adodbapi==2.6.0.7', 'alabaster==0.7.12', 'alembic==1.0.7', 'amqp==2.4.1', 'anyjson==0.3.3', List Modules in a Console without Pip To list all installed modules from a python console without pip, you can use the fol...
# to show installed packages pip list # to show the information about a particularpackagepip show package_name # to install a listofdependencies,suchasto clone a virtual environment pip install-r requirements.txt 4. LEGB(Local, Enclosing, Global and Built-in) ...
ENVintidstringnameVIRTUAL_ENVintidstringpathPACKAGESintidstringnamestringlocationcontainsinstalled_in 结语 Python包安装问题是一个常见但容易解决的问题。通过检查Python环境、包安装路径、虚拟环境以及包名拼写,我们可以快速定位并解决问题。希望本文能帮助你在遇到类似问题时,能够迅速找到解决方案,提高开发效率。
The following script will run pip as a subprocess to install one or more packages, and then print an updated list of installed packages: import sys import subprocess # implement pip as a subprocess: subprocess.check_call([sys.executable, '-m', 'pip', 'install', '<packagename>']) # ...
>>> print(sys.path)['','/usr/lib/python310.zip','/usr/lib/python3.10','/usr/lib/python3.10/lib-dynload','<YOUR HOME>/.local/lib/python3.10/site-packages','/usr/local/lib/python3.10/dist-packages','/usr/lib/python3/dist-packages']...
就是说从源代码手动安装,将使用site-packages目录。第三方python软件安装到dist-packages目录,这是为了减少与操作系统版本的python的冲突,因为Debian系统的许多工具都依赖与系统版本的python。 查找Python 安装路径 >>>fromdistutils.sysconfigimportget_python_lib>>>print(get_python_lib()) ...