How do I convert a string to a number?
Python contains several built-in functions to convert values from one data type to another data type.
The int function takes string and coverts it to an integer.
>>>s = "1234" # s is string
>>>i = int(s) # string converted to int
>>>print i+2
-------------------------
1236
The float function converts strings into float number.
>>>s = "1234.22" # s is string
>>>i = float(s) # string converted to float
>>>print i
-------------------------
1234.22
