Little problem with the "+" operator

[Steve Purcell]

Zamurai wrote:
> variableOne = 500
> myVariable = variableOne + "cool"
> 
> But I get the following error: "unsupported operand types for +"
> 
> Does someone know how to solve the problem?

You can't add variables of different types together in Python and expect them
to magically agree on a sensible result.

So, you have to explicitly say:

>>> variableOne = 500
>>> myVariable = str(variableOne) + "cool"
>>> myVariable 
'500cool'
>>> 

Or,

>>> variableOne = 500
>>> myVariable = variableOne + int("cool")
Traceback (innermost last):
  File "<stdin>", line 1, in ?
ValueError: invalid literal for int(): cool
>>> 


This is infinitely more sane than:

% perl -e 'print 500 + "cool"'
500


-Steve

-- 
Steve Purcell, Pythangelist
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