after reading the above lecture make sure to answer the following polls
1. What is the purpose of if-else statements in Python?
Anonymous Quiz
10%
a) To repeat a block of code a certain number of times
88%
b) To make decisions based on conditions
2%
c) To define functions
0%
d) To store data in variables
name = "Alice"
if name == "Bob":
print("Hello Bob!") else: print("You are not Bob")
if name == "Bob":
print("Hello Bob!") else: print("You are not Bob")
Anonymous Quiz
1%
Hello Bob!
90%
You are not Bob
4%
no output or Empty
4%
ERROR
day = "Thursday"
if day == "Saturday" or day == "Sunday": print("It's the weekend!") else: if day == "Monday": print("Back to the grind...") else: print("It's a weekday.")
if day == "Saturday" or day == "Sunday": print("It's the weekend!") else: if day == "Monday": print("Back to the grind...") else: print("It's a weekday.")
Anonymous Quiz
80%
It's a weekday.
0%
Monday
13%
It's the weekend!
7%
No output
👏1
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How to get input from the user Python :
1. Getting User Input:
To get input from the user, you can use the
Example:
By default,
Example:
You can prompt for multiple inputs by calling
Example:
1. Getting User Input:
To get input from the user, you can use the
input() function in Python. It reads a line of text entered by the user and returns it as a string.Example:
python2. Converting Input to Other Data Types:
name = input("Enter your name: ")
print("Hello, " + name)
By default,
input() returns the user input as a string. If you need to convert it to other data types like integer or float, you can use type casting.Example:
python3. Prompting for Multiple Inputs:
age = int(input("Enter your age: "))
height = float(input("Enter your height (in meters): "))
You can prompt for multiple inputs by calling
input() multiple times and storing the results in different variables.Example:
pythonLet me know if you have any further questions.
num1 = int(input("Enter first number: "))
num2 = int(input("Enter second number: "))
sum = num1 + num2
print("Sum:", sum)
👍2
What function is used to get user input in Python?
Anonymous Quiz
23%
a) get_input()
0%
b) read()
77%
c) input()
0%
d) ask()
👍3
What data type is the user input returned by input() by default?
Anonymous Quiz
23%
a) Integer
11%
b) Float
59%
c) String
7%
d) Boolean
👍1
Example of the importance of Variable
# Define variables to store length and width
length = 5
width = 3
# Calculate the area using the formula (length * width)
area = length * width
# Print the calculated area
print("The area of the rectangle is:", area)
"Tricky Question" num1 = 2 num2 =input("Enter second number: ") assume the user entred 3 print(num1+num2)
Anonymous Quiz
26%
23
36%
5
7%
Unknown
31%
Error
👏2
x = 10
y = x + 5
x = "Hello" print(y)
y = x + 5
x = "Hello" print(y)
Anonymous Quiz
3%
A. 10
44%
B. 15
3%
C. "Hello"
51%
D. An error will occur
👍3
total = 0
for i in range(1, 6):
total += i print(total) )
for i in range(1, 6):
total += i print(total) )
Anonymous Quiz
5%
A. 10
48%
B. 15
15%
C. It will throw an error
32%
D. It will print each number from 1 to 6
💘3
Leetcode with dani
total = 0
for i in range(1, 6):
total += i print(total) )
for i in range(1, 6):
total += i print(total) )
print(total) is out of the for loop
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In Python, a variable is a name that refers to a value. Variables are used to store data that can be used later in the program. In Python, variables are created when they are first assigned a value. The basic syntax for creating a variable in Python is as follows:
variable_name = value
In this syntax, variable_name is the name of the variable, and value is the value that the variable is assigned. Here's an example of creating a variable in Python:
x = 5
In this example, the variable x is created and assigned the value 5. Once a variable is created, it can be used in expressions and statements throughout the program.
Variables in Python can hold many different types of values, including numbers, strings, lists, and more. Here are some examples of creating variables with different types of values:
# create a variable with a number value
x = 5
# create a variable with a string value
name = "Alice"
# create a variable with a list value
fruits = ["apple", "banana", "cherry"]
In these examples, the variables x, name, and fruits are created with different types of values. The variable x is assigned the number 5, the variable name is assigned the string "Alice", and the variable fruits is assigned a list of strings.
Variables in Python can also be reassigned to new values. Here's an example of reassigning a variable in Python:
x = 5
x = x + 1
print(x)
In this example, the variable x is first assigned the value 5. The second line of code reassigns x to the value of x + 1, which is 6. The print() function is then called to print the value of x, which is 6.
variable_name = value
In this syntax, variable_name is the name of the variable, and value is the value that the variable is assigned. Here's an example of creating a variable in Python:
x = 5
In this example, the variable x is created and assigned the value 5. Once a variable is created, it can be used in expressions and statements throughout the program.
Variables in Python can hold many different types of values, including numbers, strings, lists, and more. Here are some examples of creating variables with different types of values:
# create a variable with a number value
x = 5
# create a variable with a string value
name = "Alice"
# create a variable with a list value
fruits = ["apple", "banana", "cherry"]
In these examples, the variables x, name, and fruits are created with different types of values. The variable x is assigned the number 5, the variable name is assigned the string "Alice", and the variable fruits is assigned a list of strings.
Variables in Python can also be reassigned to new values. Here's an example of reassigning a variable in Python:
x = 5
x = x + 1
print(x)
In this example, the variable x is first assigned the value 5. The second line of code reassigns x to the value of x + 1, which is 6. The print() function is then called to print the value of x, which is 6.
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The answer for the above question :
Here's detailed explanation
1. Prompting the User:
You can provide a message or prompt inside the parentheses of the
name = input("Enter your name: ")
In this case, "Enter your name: " is the prompt that will be displayed to the user.
2. Storing User Input:
The value entered by the user is returned by the
3. Handling User Input:
By default,
age = int(input("Enter your age: "))
Here, we are converting the user's input into an integer using
4. Using User Input:
Once you have stored the user's input in a variable, you can use it in your program as needed. For example:
print("Hello", name)
print("Next year, you will be", age + 1)
Here, we are printing a greeting message using the user's name and calculating their age for the next year by adding 1 to the inputted age.
The answer is:
name = input("Enter your name: ")
age = int(input("Enter your age: "))
print("Hello", name)
print("Next year, you will be", age + 1)
Here's detailed explanation
1. Prompting the User:
You can provide a message or prompt inside the parentheses of the
input() function. This message will be displayed to the user, asking them for input. For example:name = input("Enter your name: ")
In this case, "Enter your name: " is the prompt that will be displayed to the user.
2. Storing User Input:
The value entered by the user is returned by the
input() function and can be stored in a variable for further use. In the example above, the user's input will be stored in a variable called name.3. Handling User Input:
By default,
input() treats all user input as strings. If you want to perform numerical operations on user input, you need to convert it into an appropriate data type (e.g., integer or float). You can use type casting functions like int() or float() for this purpose.age = int(input("Enter your age: "))
Here, we are converting the user's input into an integer using
int(). If the user enters something that cannot be converted into an integer (e.g., "abc"), it will raise a ValueError.4. Using User Input:
Once you have stored the user's input in a variable, you can use it in your program as needed. For example:
print("Hello", name)
print("Next year, you will be", age + 1)
Here, we are printing a greeting message using the user's name and calculating their age for the next year by adding 1 to the inputted age.
The answer is:
name = input("Enter your name: ")
age = int(input("Enter your age: "))
print("Hello", name)
print("Next year, you will be", age + 1)
Question 1 (Multiple Choice):
What happens if the user enters "twenty-five" instead of a number when prompted for their age using age = int(input("Enter your age: "))? .
What happens if the user enters "twenty-five" instead of a number when prompted for their age using age = int(input("Enter your age: "))? .
Anonymous Quiz
67%
A. The program crashes with an error.
21%
B. The program stores "twenty-five" as the user's age.
13%
C. The program converts "twenty-five" to 25 automatically
🏆1
number_string = "1234"
number = int(number_string)
print(number + 5)
number = int(number_string)
print(number + 5)
Anonymous Quiz
27%
12345
57%
1239
16%
Error
👍2