Peter Dembinski wrote:
> AFAIK inc is builtin function. And builtin functions doesn't have to
> be real functions, they can be just aliases to Python's VM bytecodes
> or sets of bytecodes.
Wrong on both counts. ;)
py> inc
Traceback (most recent call last):
File "<interactive input>", line 1, in ?
NameError: name 'inc' is not defined
py> __builtins__.inc
Traceback (most recent call last):
File "<interactive input>", line 1, in ?
AttributeError: 'module' object has no attribute 'inc'
There is no builtin 'inc'. To verify, check:
http://docs.python.org/lib/built-in-funcs.html
http://docs.python.org/lib/non-essential-built-in-funcs.html
And while builtin functions may not have to be real *functions*, they do
have to be real *callables*:
py> type(abs)
<type 'builtin_function_or_method'>
py> help(type(abs))
Help on class builtin_function_or_method in module __builtin__:
class builtin_function_or_method(object)
| Methods defined here:
|
| __call__(...)
| x.__call__(...) <==> x(...)
...
py> type(bool)
<type 'type'>
py> help(type(bool))
Help on class type in module __builtin__:
class type(object)
| type(object) -> the object's type
| type(name, bases, dict) -> a new type
|
| Methods defined here:
|
| __call__(...)
| x.__call__(...) <==> x(...)
...
Note that both <type 'builtin_function_or_method'> and <type 'type'>
have a __call__ method, which means they are callable objects. They're
not just bytecodes; they're real objects, just like everything else in
Python. =)
STeVe
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