Ch 9 test two

import tools

A programmer using the interactive interpreter wants to use a function defined in the file tools.py. Write a statement that imports the content of tools.py into the interpreter.

from my_funcs import factorial, squared

The following code uses functions defined in my_funcs.py. Complete the import statement at the top of the program SOLUTION a = 5 print('a! =', factorial(a)) print('a^2 =', squared(a))

import my_funcs

The following code uses functions defined in my_funcs.py. Complete the import statement at the top of the program SOLUTION a = 5 print('a! =', my_funcs.factorial(a)) print('a^2 =', my_funcs.squared(a)

www.python.org

Where can you find more info about what you can import?

To keep from writing the same function over and over again in multiple scripts To maintain scripts

Why use a module?...

dependency

a module being required by another program

import

execute the code contained by the module

"__main__"

executing the script

module

file containing Python code that can be imported and can be used by scripts

__name__

global string variable automatically added to every module that contains the name of the module

if __name__ == "__main__"

if true, then the file is being executed as a script and the branch is taken

built-in

module that comes pre-installed with Python

from my_funcs import factorial

my_funcs.py contains definitions for the factorial() and squared() functions. Write a statement that imports only the function factorial from my_funcs.py

from

specify names to import from a module

script

write Python code in a file, and then pass that file as input to the interpreter