Computer Lab 03, functions, errors and exceptions

practical work

We use the code implemented last week, from Wentworth2012 and make it more flexible by encapsulating the core functionality in functions.

2.14.5 Create a function compute_final_amount that will have P,r,n,t as the input parameters. Comment the function appropriately. Make the code robust against dividing by zero runtime problem:

Use if-condition to catch the case where the denominator is zero, print an error message (using 'print') and return from the function.
Use if-condition to catch the case where the denominator is zero and raise an exception.
Handle this exception completely with a “try-except” block, i. e., no if-condition needed.

Weekly homework 03

time difference variant of 2.14.7 and 2.14.8. Implement a function compute_time_diff(h1,m1,h2,m2) that returns two values - hours, minutes - time difference between t2-t1, where the time is expressed in hours and minutes. Expect 24 hours notation. Required file name: 03_weekly_hw.py.

Usage:

>>> h,m = compute_time_diff(13,20,15,10)
>>> print(h,m)
1 50

homework

Solve homework 01 - Right triangle and submit it via Upload system in time! Check the deadline in Upload system.

Read chapters 6,7,8,9 from Wentworth2012. This material is for the next two lectures/labs.

Table of Contents

Computer Lab 03, functions, errors and exceptions

practical work

Weekly homework 03

homework