equivalent to Java's toString()?

[Gabriel Cooper]

What is the python equivalent to java's toString()?

When debugging I want to be able to basically be able to do this:

print MyObjectInstanc e

or
print str(MyObjectIns tance)

and have it print out formatted output along the lines of:

Object properties: Red=0 Yellow=0 Blue=255

currently I get something like this:

<Some Object at 0xff32ffca3>

In java it would look like this:

class SomeClass {
[...]
String toString() {
return new String("Object properties: Red=" + red + " Yellow: " +
yellow + " Blue: " + blue);
}
}

[Michael Geary]

Re: equivalent to Java's toString()?

Gabriel Cooper wrote:[color=blue]
> What is the python equivalent to java's toString()?
>
> When debugging I want to be able to basically be able to do this:
>
> print MyObjectInstanc e
>
> or
> print str(MyObjectIns tance)
>
> and have it print out formatted output along the lines of:
>
> Object properties: Red=0 Yellow=0 Blue=255[/color]

Define a __str__ method in your class. It works just like toString() in Java
and JavaScript:
[color=blue][color=green][color=darkred]
>>> class MyTest( object ):[/color][/color][/color]
.... def __str__( self ):
.... return 'My Test!'
....[color=blue][color=green][color=darkred]
>>> test = MyTest()
>>> print test[/color][/color][/color]
My Test![color=blue][color=green][color=darkred]
>>>[/color][/color][/color]

Also see __repr__ for a related method.

-Mike

[Roy Smith]

Re: equivalent to Java's toString()?

In article <1087t9hc5vl833 b@corp.supernew s.com>,
"Michael Geary" <Mike@DeleteThi s.Geary.com> wrote:
[color=blue]
> Gabriel Cooper wrote:[color=green]
> > What is the python equivalent to java's toString()?
> >
> > When debugging I want to be able to basically be able to do this:
> >
> > print MyObjectInstanc e
> >
> > or
> > print str(MyObjectIns tance)
> >
> > and have it print out formatted output along the lines of:
> >
> > Object properties: Red=0 Yellow=0 Blue=255[/color]
>
> Define a __str__ method in your class. It works just like toString() in Java
> and JavaScript:
>[color=green][color=darkred]
> >>> class MyTest( object ):[/color][/color]
> ... def __str__( self ):
> ... return 'My Test!'
> ...[color=green][color=darkred]
> >>> test = MyTest()
> >>> print test[/color][/color]
> My Test![color=green][color=darkred]
> >>>[/color][/color]
>
> Also see __repr__ for a related method.
>
> -Mike[/color]

Also, you might want to look at the pprint module. It's not quite what
you were asking for, but it's worth knowing about if you're doing this
kind of stuff.

[Ype Kingma]

Re: equivalent to Java's toString()?

Michael Geary wrote:
[color=blue]
> Gabriel Cooper wrote:[color=green]
>> What is the python equivalent to java's toString()?
>>
>> When debugging I want to be able to basically be able to do this:
>>
>> print MyObjectInstanc e
>>
>> or
>> print str(MyObjectIns tance)
>>
>> and have it print out formatted output along the lines of:
>>
>> Object properties: Red=0 Yellow=0 Blue=255[/color]
>
> Define a __str__ method in your class. It works just like toString() in[/color]
Java[color=blue]
> and JavaScript:
>[color=green][color=darkred]
>>>> class MyTest( object ):[/color][/color]
> ... def __str__( self ):
> ... return 'My Test!'
> ...[color=green][color=darkred]
>>>> test = MyTest()
>>>> print test[/color][/color]
> My Test![color=green][color=darkred]
>>>>[/color][/color]
>
> Also see __repr__ for a related method.
>
> -Mike[/color]

Closing the circle, just for info, from the java docs of jython:

http://www.jython.org/docs/javadoc/o....html#__str__()

"""Equivale nt to the standard Python __str__ method. This method should not
typically need to be overridden. The easiest way to configure the string
representation of a PyObject is to override the standard Java toString
method."""

Regards,
Ype