python basic statement
You must assign a value to a python variable before using it, because python variables do not have default values.
Get user input value
Note at this point: The return value of the input function is a text or a string.
some simple functions
power
absolute value
rounding floating point numbers
Round numbers down using modules
Round numbers up
Import a specific function in a module
The format is as follows: from module import function
Use variables to refer to functions
Complex arithmetic with python
Note: Unless you must use the from version of the import command, you should stick to the regular version of the import command.
python supports complex arithmetic
__future__ module never understood
