Final

Question 1

How would you create a blank list in Python?

Answer 1

x = [ ]

Question 2

What would the following code display?
psycho = [22,23,24,98,100,101]
numbers[-4] = 99
print(numbers)

Answer 2

error numbers not defined
if psycho instead of numbers the output would be
[22,23,99,24,98,100,101]

Question 3

What would the following code display?
numbers = [1,2,3,4,5]
my_list = numbers[1:3]
print(my_list)

Answer 3

[2, 3]

Question 4

Write a program that opens an output file with the filename my_name.txt, writes your name to
the file and then closes the file.

Answer 4

def main():
     my_file = open('my_name.txt', 'w')
     my_file.write("Lillian")
     my_file.close()
main()

Question 5

A file that data is written to, is known as a(n)

a. input file
b. output file
c. sequential access file
d. binary file

Answer 5

b. output file

Question 6

This function returns the length of a list.

a. highest
b. length
c. length of
d. len

Answer 6

d. len

Question 7

Which of the following is a count controlled loop?

a. for
b. foreach
c. while
d. erst

Answer 7

a. for

Question 8

A group of statements that exist within a program for the purpose of performing a specific task is a(n) __________.

a. block
b. parameter
c. function
d. expression

Answer 8

c. function

Question 9

Each repetition of a loop is known as a (n) __________.

a. cycle
b. revolution
c. orbit
d. iteration

Answer 9

d. iteration

Question 10

he += operator is an example of a(n) __________ operator.

a. relational
b. augmented assignment
c. complex
d. reverse

Answer 10

b. augmented assignment

Question 11

A variable that is used to mark the end of a sequence of values is known as a (n)

a. accumulator
b. counter
c. terminator
d. sentinel

Answer 11

d. sentinel

Question 12

The first line of a function definition is known as the 
\_\_\_\_\_\_\_\_\_\_.
a. body
b. introduction
c. initialization
d. header

Answer 12

d. header

Question 13

A __________ is a variable that is created inside a function.

a. global variable
b. local variable
c. hidden variable
d. none of the above, you cannot create a variable in a function

Answer 13

b. local variable

Question 14

A __________ is a piece of data that is sent into a function.

a. argument
b. parameter
c. header
d. packet

Answer 14

a. argument

Question 15

Briefly describe an exception

Answer 15

An error that causes the program to stop

Question 16

If an exception is raised and the program does not handle it with a try/except statement, what
happens?

Answer 16

An error message is displayed and the program crashes

Question 17

What is a record? What is a field?

Answer 17

A record is a set of data based on one topic. A field is a single piece of data within a record.

Question 18

What will happen with the following code:
try:
x = float(‘abcdef’)
print(‘The conversion is complete.’)
except:
print(‘This code caused an error.’)
else:
print(“This just happened.”)
finally:
print(‘An error may have happened’.)

Answer 18

try:
except:
#happens with an exception
else:
#this happens without an exception
finally:
#This always happens

answer:
This code caused an error.
An error may have happened.

Question 19

Write a while loop that will print the sum of the numbers from 1 to 100.

Answer 19

while x <= 100:
total += x
x += 1
print (total)

Question 20

Write a function that will take 2 different numbers as parameters. The function will return the largest of the numbers.

Answer 20

def largest (x,y):
      if x > y:
              return x
      else:         
               return y