On 1/17/2014 8:49 AM, Ethan Furman wrote:
%s is restricted in what it will accept::
- input type supports Py_buffer?
use it to collect the necessary bytes
- input type is something else?
use its __bytes__ method; if there isn't one, raise a TypeError
Examples:
>>> b'%s' % b'abc'
b'abc'
>>> b'%s' % 3.14
Traceback (most recent call last):
...
TypeError: 3.14 has no __bytes__ method
>>> b'%s' % 'hello world!'
Traceback (most recent call last):
...
TypeError: 'hello world' has no __bytes__ method, perhaps you need
to encode it?
If you produce a helpful error message for str (re: encoding), might it
not be appropriate to produce a helpful error message for builtin number
types (, perhaps you need a numeric format code?)?
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