On 5/6/2011 3:22 PM, harrismh777 wrote:
I don't really like the old style, not because there is anything wrong
with it,
There is in that it special cases tuples. For instance, a message
function like
def emsg(x):
print("The following object caused a proplem: %s" % x)
raises "TypeError: not all arguments converted during string formatting"
if x is a tuple with other than 1 member and extracts x[0] if there is
just one. Neither is the desired behavior. That has been a problem (and
sometimes a debugging puzzle) in real code One has to remember to write
something like
def emsg(x):
if isinstance(x,tuple):
x = (x,)
print(The following object caused a proplem: %s" % x)
Guido sees that his original design is a bit of a bug trap, which is one
reason he wanted to replace it.
--
Terry Jan Reedy
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