The Python interpreter has a number of functions built-in that are always available.
abs()
all()
any()
basestring()
bin()
bool()
bytearray()
callable()
chr()
classmethod()
cmp()
compile()
complex()
delattr()
dict()
dir()
divmod()
enumerate()
eval()
execfile()
file()
filter()
float()
format()
frozenset()
getattr()
globals()
hasattr()
hash()
help()
hex()
id()
input()
int()
isinstance()
issubclass()
iter()
len()
list()
locals()
long()
map()
max()
memoryview()
min()
next()
object()
oct()
open()
ord()
pow()
print()
property()
range()
raw_input()
reduce()
reload()
repr()
reversed()
round()
set()
setattr()
slice()
sorted()
staticmethod()
str()
sum()
super()
tuple()
type()
unichr()
unicode()
vars()
xrange()
zip()
__import__()
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