Interact Exercise 01

Import



In [7]:

    
%matplotlib inline
from matplotlib import pyplot as plt
import numpy as np



In [11]:

    
from IPython.html.widgets import interact, interactive, fixed
from IPython.display import display
from IPython.html import widgets

Interact basics

Write a print_sum function that prints the sum of its arguments a and b.



In [12]:

    
def print_sum(a, b):
    """Print the sum of the arguments a and b."""
    return a+b

Use the interact function to interact with the print_sum function.

a should be a floating point slider over the interval [-10., 10.] with step sizes of 0.1
b should be an integer slider the interval [-8, 8] with step sizes of 2.



In [15]:

    
interact(print_sum, a=(widgets.FloatSlider(min=-10.,max=10.,step=0.1,value=0)), b=(widgets.IntSlider(min=-8,max=8,step=2,value=0)));



In [ ]:

    
assert True # leave this for grading the print_sum exercise

Write a function named print_string that prints a string and additionally prints the length of that string if a boolean parameter is True.



In [32]:

    
def print_string(s, length=False):
    """Print the string s and optionally its length."""
    print(s)
    if length==True:
        print(len(s))

Use the interact function to interact with the print_string function.

s should be a textbox with the initial value "Hello World!".
length should be a checkbox with an initial value of True.



In [36]:

    
interact(print_string, s="Hello", length=False);









    



Hello
5



In [27]:

    
assert True # leave this for grading the print_string exercise



In [ ]: