Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Write a python code for all.

 

1. Write a Python program to do the following :

 

a. Take two numbers from the user in separate inputs. and then perform addition, subtraction, multiplication and division calculations on 2 numbers.

 

b. Consider the possibility of input errors (i.e. divisor is 0? user entered string instead of numbers? user entered float?) Use try and except to handle the 2 exceptions by outputting statements that indicate related errors.

 

2. From the two statements given below, using list comprehension, create the list1 (i.e. the characters from v which are in w): list1 = ['e','o'] .

 

w = 'hello'

v = ('a', 'e', 'i', 'o', 'u')

3. Write a function that returns the mean of a list that is passed as formal argument to a function. Create a list with values [10, 56.7, 56, 89, 100, 99, 87.5, 34, 985, 10] and pass it to the above defined function. Print the mean of the list of values.

 

4. Add a breakpoint to the mean function (created in question 3) such that the interactive console of pdb can be used to look at the values of mean after each item in the list is calculated.

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