User Manual

17-12
k Using Modules (import)
In the Python mode, you can use the functions below in addition to Python built-in functions.
• Python standard math module and random module functions
• CASIO-original casioplot module functions (see page 17-18)
However, to use a function contained in a module you have to first import (
import) the module.
import Syntax
Description
import <module name> Imports the module (py file) specified by
<module name>.
from <module name> import ½ Imports all of the elements* included in the
module specified by <module name>.
from <module name> import <element>
[, <element>]
Imports the specified elements (functions,
etc.) included in the module specified by
<module name>.
* An element with a name that starts with an underscore (_) character cannot be imported.
• A single py file written by a py script is called a “module”. py files are imported using the
same syntax as
import.
• For an example of importing and using a py file, see “Sample 4: Importing a py File” in
“Sample Scripts” (page 17-31).
Notation Examples:
import math (Imports the math module.)
from math import pi, sqrt (From the math module, imports
pi and sqrt only.)
• If you use
import to import a module, you need to include “<module name>.” before a
function in order to use that function. To use
pi within the math module, for example, it would
need to be written as “math.pi”.
• When using
from to import a module, do not use the syntax below.
<module name>.<function name>
Executing an import operation with this syntax will cause an error.