On 2/22/2011 6:32 PM, Senthil Kumaran wrote:
On Tue, Feb 22, 2011 at 6:01 PM, Steve Holden<st...@holdenweb.com> wrote:
... It would appear from tests
that "{0[X]}".format(...) first tries to convert the string "X" to in
integer. If it succeeds then __getitem__() is called with the integer as an
argument, otherwise it is called with the string itself as an argument. Is
this correct?
This is addressed in the PEP 3101:
"""
The rules for parsing an item key are very simple.
If it starts with a digit, then it is treated as a number, otherwise
it is used as a string.
""" http://www.python.org/dev/peps/pep-3101/
To the other question :
Furthermore, how does one access the key '1' in a format statement?
~Ethan~
I think, parsing rule already helps to understand the problem with the
key like '1'.
The PEP also explicitly states that:
"""
Because keys are not quote-delimited, it is not possible to
specify arbitrary dictionary keys (e.g., the strings "10" or
":-]") from within a format string.
"""
Is this all specific in the lib docs? If not, it should be.
--
Terry Jan Reedy
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