Get bound method by name

[Johannes Bauer]

Hello group,

I'm looking for a Python function but have forgotten it's name.
Essentially what I want is:

class Foo():
def bar(self):
pass

x = Foo()
y = x.MAGIC("bar")
print(y)
<bound method Foo.bar of <__main__.Foo instance at 0xb7e11fcc>>

So the question is: How is the magic function called which returns me
the bound method of a class instance by its name? I know there was a way
but just can't remember...

Thanks in advance,
Kind regards,
Johannes

 

[John Machin]

Hello group,

I'm looking for a Python function but have forgotten it's name.
Essentially what I want is:

class Foo():
        def bar(self):
                pass

x = Foo()
y = x.MAGIC("bar")
print(y)
<bound method Foo.bar of <__main__.Foo instance at 0xb7e11fcc>>

So the question is: How is the magic function called which returns me
the bound method of a class instance by its name? I know there was a way
but just can't remember...

getattr(x, "bar")

 

[Chris Rebert]

Hello group,

I'm looking for a Python function but have forgotten it's name.
Essentially what I want is:

class Foo():
       def bar(self):
               pass

x = Foo()
y = x.MAGIC("bar")

getattr() is the function you seek.

y = getattr(x, "bar")

print(y)
<bound method Foo.bar of <__main__.Foo instance at 0xb7e11fcc>>

Cheers,
Chris

 

[Graham Breed]

Hello group,

I'm looking for a Python function but have forgotten it's name.
Essentially what I want is:

class Foo():
def bar(self):
pass

x = Foo()
y = x.MAGIC("bar")
print(y)
<bound method Foo.bar of <__main__.Foo instance at 0xb7e11fcc>>

So the question is: How is the magic function called which returns me
the bound method of a class instance by its name? I know there was a way
but just can't remember...

y = getattr(x, "bar")

 

[Steve Holden]

y = getattr(x, "bar")

Or, as a method call (which was requested):

y = x.__getattr__("bar")

regards
Steve

 

[Chris Rebert]

Or, as a method call (which was requested):

The OP was a bit inconsistent. He only used the word "function", but
his pseudocode used a method.
Either way, one shouldn't normally use magic methods directly.

Cheers,
Chris