[Python-Dev] [Python-3000] PEP 30XZ: Simplified Parsing (original) (raw)

Eric V. Smith eric+python-dev at trueblade.com
Mon Apr 30 14:39:51 CEST 2007


Jim Jewett wrote:

Rationale for Removing Implicit String Concatenation

Implicit String concatentation can lead to confusing, or even silent, errors. [1] def f(arg1, arg2=None): pass f("abc" "def") # forgot the comma, no warning ... # silently becomes f("abcdef", None) or, using the scons build framework, sourceFiles = [ 'foo.c', 'bar.c', #...many lines omitted... 'q1000x.c']

Since your first example omits the comma, I think this one should, too.

      sourceFiles = [
      'foo.c'
      'bar.c',
      #...many lines omitted...
      'q1000x.c']

That is, either both examples should show an error, or both examples should work, but point out how easy it is to make an error.

Eric.



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