why no automatic conversion in string concatenation?

[Michael Pelz Sherman]

As a Java & PHP developer, I find it kind of annoying that I have to explicitly convert non-string variables to strings when concatenating them, especially when python is quite capable of doing the conversion automatically.

i.e.:

>>> myBool = True
>>> print myBool
True
>>> print "myBool is " + myBool
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: cannot concatenate 'str' and 'bool' objects
>>> print "myBool is " + str(myBool)
myBool is True

Can anyone explain why this is so? Are there any plans to change this in python 3000?

Thanks,
- Michael
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