The Python Apprentice

int

We've already seen Python integers in action quite a lot. Python integers are signed and have, for all practical purposes, unlimited precision. This means that there is no pre-defined limit to the magnitude of the values they can hold.

Integer literals in Python are typically specified in decimal:

>>> 1010

They may also be specified in binary with a 0b prefix:

>>> 0b102

There may also be a octal, with a 0o prefix:

>>> 0o108

If its a hexadecimal we use the 0x prefix:

>>> 0x1016

We can also construct integers by a call to the int constructor which can convert from other numeric types, such as floats, to integers:

>>> int(3.5)3

Note that, when using the int constructor, the rounding is always towards zero:

>>> int(-3.5)-3>>> int(3.5)3