python與其他編程語言對比，python有類似spring_Python的Spring與J的Spring相比

依賴注入框架在動態類型語言中幾乎沒有那么有用。例如，請參見Java中的表示Dependency Injection: Vitally important or totally irrelevant?依賴注入框架提供的靈活性是至關重要的，而在Python中，這通常會導致不必要的復雜性。

python與其他編程語言對比、這并不意味著原則是錯誤的。請參閱以下示例如何使用簡單的習慣用法實現類之間的松散耦合：# A concrete class implementing the greeting provider interface

class EnglishGreetingProvider(object):

python語言和java語言有什么區別。def get_greeting(self, who):

return "Hello %s!" % who

# A class that takes a greeting provider factory as a parameter

class ConsoleGreeter(object):

def __init__(self, who, provider=EnglishGreetingProvider):

self.who = who

self.provider = provider()

def greet(self):

print(self.provider.get_greeting(self.who))

# Default wiring

greeter = ConsoleGreeter(who="World")

greeter.greet()

# Alternative implementation

class FrenchGreetingProvider(object):

def get_greeting(self, who):

return "Bonjour %s!" % who

greeter = ConsoleGreeter(who="World", provider=FrenchGreetingProvider)

greeter.greet()