Builtin functions and exceptions

All builtin functions and exceptions are described here. They are also available via builtins module.

Functions and types

Not all of these functions and types are turned on in all CircuitPython ports, for space reasons.

abs()
all()
any()
bin()
class bool
class bytearray
class bytes

See CPython documentation: bytes.

callable()
chr()
classmethod()
compile()
class complex
delattr(obj, name)

The argument name should be a string, and this function deletes the named attribute from the object given by obj.

class dict
dir()
divmod()
enumerate()
eval()
exec()
filter()
class float
class frozenset

frozenset() is not enabled on non-Express CircuitPython boards.

getattr()
globals()
hasattr()
hash()
hex()
id()
input()
class int
classmethod from_bytes(bytes, byteorder)

In CircuitPython, byteorder parameter must be positional (this is compatible with CPython).

to_bytes(size, byteorder)

In CircuitPython, byteorder parameter must be positional (this is compatible with CPython).

isinstance()
issubclass()
iter()
len()
class list
locals()
map()
max()
class memoryview
min()
next()
class object
oct()
open()
ord()
pow()
print()
property()
range()
repr()
reversed()

reversed() is not enabled on non-Express CircuitPython boards.

round()
class set
setattr()
class slice

The slice builtin is the type that slice objects have.

sorted()
staticmethod()
class str
sum()
super()
class tuple
type()
zip()

Exceptions

exception AssertionError
exception AttributeError
exception Exception
exception ImportError
exception IndexError
exception KeyboardInterrupt
exception KeyError
exception MemoryError
exception NameError
exception NotImplementedError
exception OSError

See CPython documentation: OSError. CircuitPython doesn’t implement the errno attribute, instead use the standard way to access exception arguments: exc.args[0].

exception RuntimeError
exception ReloadException

ReloadException is used internally to deal with soft restarts.

exception StopIteration
exception SyntaxError
exception SystemExit

See CPython documentation: python:SystemExit.

exception TypeError

See CPython documentation: python:TypeError.

exception ValueError
exception ZeroDivisionError