[Python-Dev] list += string?? (original) (raw)

David Abrahams dave at boost-consulting.com
Thu Aug 26 16🔞39 CEST 2004


I just discovered the following behavior:

C:\Documents and Settings\dave>python Python 2.3 (#46, Aug 25 2003, 18:37:29) [MSC v.1200 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information.

prefix = ['foo', 'bar', 'baz'] prefix += 'bomb' # meant to write prefix += [ 'bomb' ] prefix ['foo', 'bar', 'baz', 'b', 'o', 'm', 'b']

Is it new and/or intentional? I would have expected an error from the +=. I was very surprised when my error "passed silently".

-- Dave Abrahams Boost Consulting http://www.boost-consulting.com



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