Syntax and Basics

Understanding Python syntax, indentation, and basic operations.

What is the correct way to print "Hello, World!" in Python?

print("Hello, World!")

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2

How do you write a single-line comment in Python?

# This is a single-line comment

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3

How do you write a multi-line comment in Python?

"""
This is a
multi-line comment
"""

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4

How do you assign a value to a variable in Python? Provide an example.

x = 10
y = "Hello"

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5

What is the output of the following code snippet?

x = 5
y = "Hello"
print(x, y)
# Output: 5 Hello

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6

How do you take user input in Python and store it in a variable?

name = input("Enter your name: ")
print("Hello, " + name)

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7

What is the output of the following code snippet?

a = 10
b = 5
print(a + b)  # Output: 15
print(a - b)  # Output: 5
print(a * b)  # Output: 50
print(a / b)  # Output: 2.0

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8

How do you check the data type of a variable in Python? Provide an example.

x = 5
y = "Hello"
print(type(x))  # Output: <class 'int'>
print(type(y))  # Output: <class 'str'>

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9

What is the difference between = and == in Python?

# = is used for assignment
x = 5

# == is used for comparison
print(x == 5)  # Output: True

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10

What will be the output of the following code snippet?

x = 7
if x > 5:
    print("x is greater than 5")
else:
    print("x is less than or equal to 5")
# Output: x is greater than 5

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11

How do you write an if-else statement in Python? Provide an example.

age = 18
if age >= 18:
    print("You are an adult.")
else:
    print("You are a minor.")

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12

What will be the output of the following code snippet?

for i in range(5):
    print(i)
# Output:
# 0
# 1
# 2
# 3
# 4

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13

How do you write a for loop in Python to iterate over a list of numbers?

numbers = [1, 2, 3, 4, 5]
for number in numbers:
    print(number)

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14

What will be the output of the following code snippet?

x = 10
while x > 0:
    print(x)
    x -= 1
# Output:
# 10
# 9
# 8
# 7
# 6
# 5
# 4
# 3
# 2
# 1

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15

How do you write a while loop in Python? Provide an example.

count = 0
while count < 5:
    print("Count:", count)
    count += 1

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16

What is the purpose of the break statement in a loop? Provide an example.

for i in range(10):
    if i == 5:
        break
    print(i)
# Output:
# 0
# 1
# 2
# 3
# 4

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17

What is the purpose of the continue statement in a loop? Provide an example.

for i in range(10):
    if i % 2 == 0:
        continue
    print(i)
# Output:
# 1
# 3
# 5
# 7
# 9

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18

How do you define a function in Python? Provide an example.

def greet():
    print("Hello, World!")

greet()

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19

What is the output of the following code snippet?

def greet(name):
    return "Hello, " + name

print(greet("Alice"))
# Output: Hello, Alice

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20

How do you call a function in Python and pass arguments to it? Provide an example.

def add(a, b):
    return a + b

result = add(5, 3)
print(result)  # Output: 8

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21

How do you convert a string to an integer in Python? Provide an example.

num_str = "10"
num_int = int(num_str)
print(num_int)  # Output: 10

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22

How do you convert an integer to a string in Python? Provide an example.

num_int = 10
num_str = str(num_int)
print(num_str)  # Output: "10"

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23

How do you find the length of a string in Python? Provide an example.

text = "Hello, World!"
length = len(text)
print(length)  # Output: 13

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24

What will be the output of the following code snippet?

text = "Hello, World!"
print(text[0])  # Output: H
print(text[-1])  # Output: !

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25

How do you concatenate two strings in Python? Provide an example.

str1 = "Hello"
str2 = "World"
result = str1 + " " + str2
print(result)  # Output: Hello World

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26

How do you use string formatting in Python? Provide an example.

name = "Alice"
age = 30
text = f"My name is {name} and I am {age} years old."
print(text)  # Output: My name is Alice and I am 30 years old.

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27

What will be the output of the following code snippet?

list1 = [1, 2, 3]
list2 = [4, 5, 6]
list3 = list1 + list2
print(list3)
# Output: [1, 2, 3, 4, 5, 6]

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28

How do you append an element to a list in Python? Provide an example.

fruits = ["apple", "banana"]
fruits.append("cherry")
print(fruits)  # Output: ["apple", "banana", "cherry"]

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29

What will be the output of the following code snippet?

numbers = [1, 2, 3, 4, 5]
print(numbers[1:3])
# Output: [2, 3]

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30

How do you create a dictionary in Python? Provide an example.

person = {
    "name": "Alice",
    "age": 30,
    "city": "New York"
}
print(person)

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31

How do you access a value in a dictionary using a key? Provide an example.

person = {
    "name": "Alice",
    "age": 30,
    "city": "New York"
}
print(person["name"])  # Output: Alice

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32

How do you add a key-value pair to a dictionary? Provide an example.

person = {
    "name": "Alice",
    "age": 30
}
person["city"] = "New York"
print(person)  # Output: {"name": "Alice", "age": 30, "city": "New York"}

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33

How do you remove a key-value pair from a dictionary? Provide an example.

person = {
    "name": "Alice",
    "age": 30,
    "city": "New York"
}
del person["age"]
print(person)  # Output: {"name": "Alice", "city": "New York"}

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34

What will be the output of the following code snippet?

set1 = {1, 2, 3, 4, 5}
set2 = {4, 5, 6, 7, 8}
print(set1.intersection(set2))
# Output: {4, 5}

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35

How do you create a tuple in Python? Provide an example.

tuple1 = (1, 2, 3)
print(tuple1)  # Output: (1, 2, 3)

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36

What will be the output of the following code snippet?

tuple1 = (1, 2, 3)
print(tuple1[1])
# Output: 2

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37

How do you define a function with default arguments in Python? Provide an example.

def greet(name="World"):
    print(f"Hello, {name}!")

greet()  # Output: Hello, World!
greet("Alice")  # Output: Hello, Alice!

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38

What will be the output of the following code snippet?

def add(a, b):
    return a + b

result = add(5, 3)
print(result)
# Output: 8

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39

How do you return multiple values from a function in Python? Provide an example.

def get_person():
    name = "Alice"
    age = 30
    return name, age

person_name, person_age = get_person()
print(person_name)  # Output: Alice
print(person_age)  # Output: 30

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40

What is the purpose of the pass statement in Python? Provide an example.

def my_function():
    pass  # Placeholder for future code

class MyClass:
    pass  # Placeholder for future code

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41

How do you create a class in Python? Provide an example.

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

    def greet(self):
        print(f"Hello, my name is {self.name} and I am {self.age} years old.")

person = Person("Alice", 30)
person.greet()

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42

What will be the output of the following code snippet?

class Animal:
    def __init__(self, name):
        self.name = name

    def speak(self):
        print(f"{self.name} makes a sound.")

animal = Animal("Dog")
animal.speak()
# Output: Dog makes a sound.

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43

How do you inherit a class in Python? Provide an example.

class Animal:
    def __init__(self, name):
        self.name = name

    def speak(self):
        print(f"{self.name} makes a sound.")

class Dog(Animal):
    def speak(self):
        print(f"{self.name} barks.")

dog = Dog("Rex")
dog.speak()
# Output: Rex barks.

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44

What is a lambda function in Python? Provide an example.

add = lambda x, y: x + y
print(add(5, 3))  # Output: 8

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45

How do you handle exceptions in Python? Provide an example.

try:
    result = 10 / 0
except ZeroDivisionError:
    print("You can't divide by zero!")

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