Implicit Conversions

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I wanted to know the order of implicit conversions and which sort of values
allow them. From searching around in books and the archive of this mailing
list, it seems to be that only numbers are implicitly converted within each
other and bools can be implicitly converted to ints? However, I'm unable to
find any other implicit conversions and the order of the implicit
conversions (something like int->float->long). Any help would be greatly
apprectiated. Also, I'm not on the mailing list so can everyone please cc me
in the replies?
Reneé

 

[Serge Orlov]

Anybody?

Speaking as a Python programmer (not a Python developer),
I would say that Python doesn't generally do implicit
conversions.

To be more specific Python Virtual Machine doesn't do implicit
conversions. However any class including builtin ones can
convert any input argument to any other type. From the
outer point of view (e.g. user of int class) it's implicit conversion,
but from inner point of view (e.g. int class) there is no implicit
conversions of input arguments so the int class has to explicitly
convert them.

-- Serge.

 

[John Roth]

The coercion rules are documented in the Python Reference Manual under
Data Model - Special Method Names - Coercion Rules.

John Roth


I wanted to know the order of implicit conversions and which sort of values
allow them. From searching around in books and the archive of this mailing
list, it seems to be that only numbers are implicitly converted within each
other and bools can be implicitly converted to ints? However, I'm unable to
find any other implicit conversions and the order of the implicit
conversions (something like int->float->long). Any help would be greatly
apprectiated. Also, I'm not on the mailing list so can everyone please cc me
in the replies?
Reneé