Advanced Numbers

In this lecture we will learn about a few more reperesentations of numbers in Python.

Hexadecimal

Using the function hex() you can convert numbers into a hexadecimal format:



In [4]:

    
hex(246)









    Out[4]:





'0xf6'



In [5]:

    
hex(512)









    Out[5]:





'0x200'

Binary

Using the function bin() you can convert numbers into their binary format.



In [19]:

    
bin(1234)









    Out[19]:





'0b10011010010'



In [18]:

    
bin(128)









    Out[18]:





'0b10000000'



In [16]:

    
bin(512)









    Out[16]:





'0b1000000000'

pow()

With two arguments, equivalent to x^y. With three arguments, equivalent to (x^y) % z, but may be more efficient (e.g. for longs).



In [8]:

    
pow(2,4)









    Out[8]:





16

abs

Absolute Value



In [9]:

    
abs(-3)









    Out[9]:





3



In [10]:

    
abs(3)









    Out[10]:





3

round

Round a number to a given precision in decimal digits (default 0 digits). This always returns a floating point number.



In [11]:

    
round(3)









    Out[11]:





3.0



In [13]:

    
round(3.1415926535,2)









    Out[13]:





3.14

Python has a built-in math library that is also useful to play around with in case you are ever in need of some mathematical operations. Explore the documentation here!