At its core DI is basically constructing instances of objects with the help of other objects. So you have constructor injection , setter injection , property in

At its core DI is basically constructing instances of objects with the help of other objects. So you have constructor injection , setter injection , property injection ,etc ... Now that you got these huge object graphs, you need a way to wire them without pain. That's where service locators and IOC containers are handy. A service locator is basically a registery that holds the dependencies and you instanciate objects that way container.createDefinition("MyClass").injectProperty("prop1","MyOtherClass").injectConstructor("MyThirdClass","MyLastClass") then myInstance = container.create("MyClass") or whatever The question is while dependency injection is good practice in general , do Pythonists need IOC containers or Service Locators? etc ... AMD in javascript has nothing to do with dependency injection. AMD is not about instanciating objects but resolving file dependencies.