Question

我想为我的python包实现以下两个功能，它包含setup.py并使用setuptools：

允许使用符号链接进行安装，而不是复制包文件
允许在使用“install”时运行自定义代码 setup.py

首先，我通常会这样做：

pip install -e . --user

它工作正常。

对于第二个，我在setup.py中执行：

from __future__ import print_function                                                                                                                
from setuptools import setup                                                                                                                         
from setuptools.command.install import install                                                                                                       
import os                                                                                                                                            


class CustomInstallCommand(install):                                                                                                                 
    def run(self):                                                                                                                                   
        print ("Custom code here")                                                                                                  
        install.run(self)                                                                                                                            

setup(...,
packages=['package_name'],                                                                                                                         
      package_dir={'package_name':'package_name'},                                                                                                           
      cmdclass={'install': CustomInstallCommand},                                                                                                    
      zip_safe=False)

然而，我发现：

如果我按上述方式运行pip，则永远不会调用自定义代码
如果我这样做，自定义代码会运行：

python setup.py install --user

但我不确定如何将此命令与等效-e选项一起使用，以便安装符号链接而不是文件副本。我怎样才能实现这两个目标？

Answer 1

那是因为python setup.py install不会被调用。有两种模式可供选择：

通过python setup.py develop调用“真实”安装模式并复制源
“开发”模式通过develop调用，只会为来源创建符号链接。

所以你必须覆盖install命令，就像使用from setuptools.command.develop import develop ... class CustomDevInstallCommand(develop): def run(self): print('running custom develop command') super(CustomDevInstallCommand, self).run() setup( ..., cmdclass={ 'install': CustomInstallCommand, 'develop': CustomDevInstallCommand, }, )一样：

pip install --editable .

通过$ pip install --editable . -v Created temporary directory: /private/var/folders/_y/2qk6029j4c7bwv0ddk3p96r00000gn/T/pip-ephem-wheel-cache-1yw7baz2 ... Installing collected packages: spam Running setup.py develop for spam Running command python -c "import setuptools" Running command /Users/hoefling/.virtualenvs/stackoverflow/bin/python -c "import setuptools, tokenize;__file__='/Users/hoefling/projects/private/stackoverflow/so-49326214/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" develop --no-deps running develop running custom develop command running egg_info ... Successfully installed spam Cleaning up...安装产生：

$ResourceGroupName = "group"
$ServerName = "serverName"
$DatabaseName = "databaseName"
$StorageKeyType = "StorageAccessKey"
$StorageKey = "storageKey"
$StorageUri = "storageUri"
$AdminLogin = "admin"
$AdminPassword = (ConvertTo-SecureString "12345" -AsPlainText -Force)

New-AzureRmSqlDatabaseExport `
        -AdministratorLogin $AdminLogin `
        -AdministratorLoginPassword $AdminPassword `
        -DatabaseName $DatabaseName `
        -ResourceGroupName $ResourceGroupName `
        -ServerName $ServerName `
        -StorageKey $StorageKey `
        -StorageKeyType $StorageKeyType `
        -StorageUri $StorageUri `

Python setuptools符号链接和自定义安装扩展

1 个答案: