All builtin functions are described here. They are also available via builtins module.
abs()
all()
any()
bin()
class bool
class bytearray
class bytes
callable()
chr()
class method()
compile()
class complex
class dict
dir()
divmod()
enumerate()
eval()
exec()
filter()
class float
class frozenset
getattr()
globals()
hasattr()
hash()
hex()
id()
input()
class int
isinstance()
issubclass()
iter()
len()
class list
locals()
map()
max()
class memoryview
min()
next()
class object
oct()
open()
ord()
pow()
print()
property()
range()
repr()
reversed()
round()
class set
setattr()
sorted()
staticmethod()
class str
sum()
super()
class tuple
type()
zip()