Python 2 exam questions and answers

Python 2 exam questions and
answers5

When a program needs to save data for later use, it writes the data in a(n) _______________. -
ANSWERS-file



A(n) _______________ is an object that holds multiple unique items of data in an unordered

manner. - ANSWERS-set



The built-in function _______________ returns the length of a sequence. - ANSWERS-len()



A(n) _______________ is a span of items that are taken from a sequence. - ANSWERS-slice



The third number in string slicing brackets or in the range() function represents the

_______________ value. - ANSWERS-step or increment



Assume namesList contains a list of names (as strings). Write a for-loop that walks over the list

and prints out all the names. - ANSWERS-for n in namesList:

print(n)



What are the valid indexes for the string 'New York'?

a. 0 through 7

b. 0 through 8

c. -1 through -8

d. -1 through 6 - ANSWERS-0 through 7

, What statement can be used to handle some of the run-time errors in a program?

a. exception statement

b. try statement

c. try/except statement

d. exception handler statement - ANSWERS-try/except statement



Which method would you use to returns all the elements in the dictionary as a list of tuples?

a. list

b. items

c. pop

d. keys - ANSWERS-items



Which step creates a connection between a file and a program?

a. Open the file.

b. Read the file.

c. Process the file.

d. Close the file. - ANSWERS-open the file



What will be assigned to s_string after the execution of the following code?

special = '1337 Country Ln.'

s_string = special[ :4]

a. '1357'

b. 'Country Ln.'

c. ' Country Ln.'

d. Invalid code - ANSWERS-'1357'