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POIn Python, can you call an instance method of class A, but pass in an instance of class B?
 

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  1. POIn Python, can you call an instance method of class A, but pass in an instance of class B?
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    <p>In the interest of reusing some existing code that was defined as an instance method of a different class, I was tying to do something like the following:</p> <pre><code>class Foo(object): def __init__(self): self.name = "Foo" def hello(self): print "Hello, I am " + self.name + "." class Bar(object): def __init__(self): self.name = "Bar" bar = Bar() Foo.hello(bar) </code></pre> <p>but that results in:</p> <blockquote> <p>TypeError: unbound method hello() must be called with Foo instance as first argument (got Bar instance instead)</p> </blockquote> <p>Is something like this possible?</p> <hr> <p>I should have been clear that I know this is a bad idea. Obviously the real solution is a bit of refactoring. I just figured there must be a way, and it turns out there is.</p> <p>Thanks for the comments.</p>
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    1. USJason DeFontes
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    1. COLooks like Python gave you your answer. This is the wrong approach for reusing existing code, anyway.
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    2. COWhy don't you want to factor out the common functionality and call it from the instance methods of both Foo and Bar?
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      1. USNathan Kitchen
    3. COYes, this is clearly the wrong approach. I just assumed it could be done due to Python's dynamic nature, and was a little surprised when it didn't work as I expected.
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      1. USJason DeFontes
 

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