Python Skill Builder

Python is a jackknife language that can be used for shell scripts, desktop apps, websites, AI. You don’t need to become an expert to use it. Knowing even a little can help you solve problems.

Check where you are at with your Python knowledge using this fun 20 question test. You won’t get any immediate rewards but you will be a better person for it 🙂

1. To generate a random secure Universally unique ID which method should I use

uuid.uuid4()

uuid.uuid1()

uuid.uuid3()

random.uuid()

2. What will the following code output?

x = 5
y = "Paul"
print(x + y)

Error

5 “Paul”

5 Paul

3. When working with a file what happens when using file mode x ?

Example code:

try: with open("fname", "x") as fout: 
   #Work with your open file 
except FileExistsError: 
   # Your error handling goes here

Create a file, returns an error if the file exists

create a file if the specified file does not exist

Create a file if it doesn’t exists else Truncate the existed file

4. What is the output:

print(2 ** 3 ** 2)

512

5. What is the output:

print(10 - 4 * 2)

6. Given the nested if-else below, what will be the value x when the code executed successfully

x = 0
a = 5
b = 5
if a > 0:
   if b < 0:
      x = x + 5
   elif a > 5:
      x = x + 4
   else:
      x = x + 3
else:
   x = x + 2

print(x)

7. What is the output of the following:

testList = [1, 2, 3, 4, 5, 6, 7]
pow2 = [2 * x for x in testList]
print(pow2)

[2, 4, 6, 8, 10, 12, 14]

[2, 4, 8, 16, 32, 64, 128]

8. What is the output of the following function call:

def sampleFunc(name, age=20):
   print(name, age)

sampleFunc('Peter', 55)

Peter 20

Peter 55

9. What is the output of the following list operation:

testList = [10, 20, 30, 40, 50, 60, 70, 80]
print(testList[2:5])
print(testList[:4])
print(testList[3:])

[30, 40, 50]
[10, 20, 30, 40]
[40, 50, 60, 70, 80]

[20, 30, 40, 50]
[10, 20, 30, 40]
[30, 40, 50, 60, 70, 80]

10. What will be the output of the following code ?

sampleString = "Apples"
print(sampleString[1:4], sampleString[:5], sampleString[4:], sampleString[0:-1], sampleString[-2:-1])

pple Apple pple Appl pple

Apple Apple Appl es ppl

ppl Apple es Apple e

11. What is the output of the following set operation:

sampleSet1 = {"Apples", "Oranges", "Bananas"}
sampleSet2 = {"Oranges", "Grapes", "Lemons"}

sampleSet1.difference_update(sampleSet2)
print(sampleSet1)

{‘Apples’, ‘Oranges’, ‘Bananas’, ‘Grapes’, ‘Lemons’}

{‘Bananas’, ‘Apples’}

12. What is the max length of a Python string?

based on system memory

comes from config

as defined in code

13. What is the type of the following variable:

sampleTuple = ("Apples")
print(type(sampleTuple))

list

tuple

array

str

14. Which function is used to accept input from the user?

string()

rawinput()

input()

raw_input()

15. How do you output content to the console with Python?

echo

output

console.log

16. Select the all correct way to remove Annie’s hourly rate from the following dictionary?

staff = {
   "name": "Annie",
   "department": "Marketing",
   "hourly": 60
}

staff.pop(“hourly”)

staff.remove(“hourly”)

staff.popitem(“hourly”)

17. What will be the output?

for x in 'Marilyn': 
   if x != 'i': 
      print(x, end=" - ")

M a r l y n

M – a – r – l – y – n –

i –

18. Which of the following operators has the highest precedence?

–

19. What is the output of this string operation?

testStr = 'Hello'
print(testStr*3)

TypeError unsupported operand type(s)

HelloHelloHello

Hello,Hello,Hello

20. Select the command that will convert a variable named “testStr” with value “The most amazing thing in the world” to “The Most Amazing Thing In The World”.