在Java中,IoC / DI是一种非常常见的实践,广泛应用于web应用程序、几乎所有可用的框架和Java EE中。另一方面,也有很多大型的Python web应用程序,但除了Zope(我听说它的编码真的很糟糕)之外,IoC在Python世界中似乎并不常见。(如果你认为我是错的,请举一些例子)。
当然,有一些流行的Java IoC框架的克隆可用于Python,例如springpython。但它们似乎都没有被实际使用。至少,我从来没有碰到过Django或sqlalchemy+<插入您最喜欢的wsgi工具箱在这里>的基于web应用程序使用类似的东西。
在我看来,IoC有合理的优势,可以很容易地取代django-default-user-model,但在Python中广泛使用接口类和IoC看起来有点奇怪,而且不»pythonic«。但是也许有人有更好的解释,为什么IoC在Python中没有被广泛使用。
Haven't used Python in several years, but I would say that it has more to do with it being a dynamically typed language than anything else. For a simple example, in Java, if I wanted to test that something wrote to standard out appropriately I could use DI and pass in any PrintStream to capture the text being written and verify it. When I'm working in Ruby, however, I can dynamically replace the 'puts' method on STDOUT to do the verify, leaving DI completely out of the picture. If the only reason I'm creating an abstraction is to test the class that's using it (think File system operations or the clock in Java) then DI/IoC creates unnecessary complexity in the solution.