Python Operators + if-else + Loops | 2/100 Days of Python Algo trading

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Day 2: Python Operators + if-else + Loops

1. What are the two main categories of operators in Python?

Arithmetic and logical

Comparison and assignment

Mathematical and bitwise

All of the above

2. What does the following code output: result = 5 + 3 * 2

11

16

6

An error occurs

3. How do you represent exponentiation (a to the power of b) in Python?

a ^ b

a ** b

a * b

 a * * b

4. What is the output of the following code: x = 10 if x > 5: print("x is greater than 5")

Always prints "x is greater than 5"

Prints nothing

Prints "x is greater than 5" only if x is greater than 5

An error occurs

5. What is the correct syntax to start an if-else statement in Python? 

if condition: code block

if (condition): code block

if condition then: code block

if condition { code block }

6. How can you add an else block to an if-else statement?

else: code block after the if block

elif condition: code block after the if block

else if condition: code block after the if block

otherwise: code block after the if block

7. What does the following code do?

number = 10

while number > 0:

print(number)

number -= 1

a) Prints numbers from 1 to 10

b) Prints numbers from 10 down to 1

c) Prints "number" 10 times

d) An infinite loop occurs

8. How can you exit a loop early in Python?

Use the exit() function

Use the break statement

Use the stop statement

There is no way to exit a loop early

9. What is the difference between a for loop and a while loop?

for loops are used for a fixed number of iterations, while loops are for an unknown number of iterations.

for loops iterate over a sequence, while loops iterate based on a condition.

There is no difference, they are interchangeable.

for loops are faster, while loops are slower.

10. What is the correct syntax to start a for loop iterating over a list?

for item in list: code block

for item of list: code block

foreach item in list: code block

for i in range(len(list)): code block

11. What does the % operator do in Python?

It raises a number to a power

It calculates the remainder of a division

It performs integer division

It checks if a number is a multiple of another

12. Which comparison operator checks if two values are not equal?

=

 ==

!=

<>

13. How would you check if the variables x and y hold the same value in Python?

x = y

x == y

x equal to y

x is y

14. Which of the following represents the logical "AND" operator in Python?

||

and

&

&&

15. Which statement is used to skip to the next iteration in a loop?

skip

continue

pass

next

16. What is the output of this code?

for i in range(5):

if i == 3:

break

print(i)

0 1 2

0 1 2 3 4

0 1 2 3

An infinite loop

17. What's the output of this code?

x = 5

if x > 2:

print("Bigger")

elif x < 5:

print("Smaller")

Bigger

Smaller

Bigger Smaller

No output

18. What's a common use case for a while loop?

Reading a file line by line

Finding the maximum item in a list

Generating random numbers within a range

All of the above

19. How would you iterate through the characters in the string "Hello"?

for i in range(len("Hello")): print("Hello"[i])

for character in "Hello": print(character)

Both a and b

Neither a nor b

20. What is the purpose of the pass statement in Python?

To indicate a block of code is empty

To signal an error

To ignore a portion of the code

To break out of a loop

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