Example test
1. What is the output of the following program (if you think it is an error, answer error)?
def add(a, b):
c = a + b
x = 3
y = 4
c = add(x, y)
print(c)
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2. The following piece of code prompts the user for a number. The program has a try-except block to prevent the program from the crash if the user enters an invalid number. However, the program is incomplete. Even if the user enters a number, the user is prompted again for a number. To fix the code, a break statement has to be added somewhere. After which line should the break statement be added?
1 while True:
2 try:
3 number = int(input("Enter a number: "))
4 except:
5 print("Enter a number")
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3. What is the output of the following program?
a = [2, 6, 3]
a.sort()
if a[1] % 2 == 0:
a.append(5)
else:
a[2] = 10
print(sum(a))
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4. What is the output of the following program?
words = "I like dogs,rainbows,cats".split(",")
lengths = []
for x in words:
lengths.append(len(x))
print(max(lengths))
a. 11
b. 8
c. 12
d. 0
e. None
f. An error
g. 18
5. How many lines will the program print out?
i = 0
while i < 3:
print(i)
i = i - 1
a. 3
b. 4
c. 2
d. 1
e. 0
f. An infinite number
6. What is the output of the following program?
answer = "0" + "0" + "7"
if answer == "007":
print("The same!")
else:
print("Not the same!")
a. The same!
b. Not the same!
c. Error message
d. Nothing
7. What numbers will the following program print out?
for i in range(10):
if i == 5:
break
else:
print(i)
a. 0 1 2 3 4
b. 1 2 3 4
c. 0 1 2 3 4 5
d. 1 2 3 4 5
e. 0 1 2 3 4 5 6 7 8 9
f. 1 2 3 4 5 6 7 8 9
g. 0 1 2 3 4 5 6 7 8 9 10
h. 1 2 3 4 5 6 7 8 9 10
8. How many times will the letter a be printed out?
def function_a():
print("a")
def function_b():
function_a()
print("b")
function_b()
function_a()
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9. What is the output of the following program?
s = 0
for i in [2,-4,-5,1,3]:
if i > 0 :
s += i
else:
s -= i
print(s)
a. 0
b. 15
c. -3
d. An error message
10. What is the output of the following program?
example = "snow world" print(example[3:6].strip())
a. wo
b. ww
c. w w
d. wwo