Python Pocket Reference, 3rd Edition

Built-in Functions

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__complex__(self)

Invoked on complex(self).

__int__(self)

Invoked on int(self).

__long__(self)

Invoked on long(self).

__float__(self)

Invoked on float(self).

__oct__(self)

Invoked on oct(self). This method returns an octal

string representation.

__hex__(self)

Invoked on hex(self). This method returns a hex string

representation.

__nonzero__(self)

Invoked on truth-value (otherwise, uses __len__ if

defined).

__coerce__(self, other)

Invoked on the mixed-mode arithmetic expression,

coerce(). This method returns a tuple of (self, other)

converted to a common type. If __coerce__ is defined, it

is generally called before any real operator methods are

tried (e.g., before

__add__). It should return a tuple con-

taining operands converted to a common type (or

None if

it can’t convert). See the Python Language Reference

(http://www.python.org/doc/) for more on coercion rules.

Built-in Functions

All built-in names (functions, exceptions, and so on) exist

in the implied outer built-in scope, which corresponds to

the

__builtin__ module. Because this scope is always

searched last on name lookups, these functions are always

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Python Pocket Reference

available in programs without imports. However, their

names are not reserved words and might be hidden by

assignments to the same name in global or local scopes. ...