If else statement in Python

In Python, you can use an if statement to execute a block of code if a certain condition is true. You can also use an else statement to execute a block of code if the condition is false. Here’s an example:

x = 5

if x > 10:
    print("x is greater than 10")
else:
    print("x is not greater than 10")

In this example, the condition x > 10 is false, so the code in the else block is executed and the message “x is not greater than 10” is printed.

You can also use an elif clause to check for multiple conditions. For example:

x = 5

if x > 10:
    print("x is greater than 10")
elif x > 5:
    print("x is greater than 5 but not greater than 10")
else:
    print("x is not greater than 5")

In this example, the first condition x > 10 is false, so the code moves on to the next condition x > 5. This condition is true, so the message “x is greater than 5 but not greater than 10” is printed. If none of the conditions are true, the code in the else block is executed.

It’s important to note that the else block will only be executed if none of the preceding if or elif conditions are true. If any of the preceding conditions are true, the code in the corresponding block will be executed and the else block will be skipped.

Here are a few more things to keep in mind when using if and else statements in Python:

You can use any expression that returns a boolean value (True or False) as the condition for an if or elif clause. For example, you can use comparisons (e.g. x > 5, x == y, etc.), membership tests (e.g. x in y, x not in y, etc.), and boolean operations (e.g. x and y, x or y, etc.).

You can nest if and else statements inside each other to create a more complex control flow. For example:

x = 5
y = 10

if x > y:
    print("x is greater than y")
else:
    if x < y:
        print("x is less than y")
    else:
        print("x is equal to y")

You can use the “and” and “or” boolean operators to combine multiple conditions in an if or elif clause. For example:

if x > 5 and x < 10:
    print("x is between 5 and 10")

if x < 5 or x > 10:
    print("x is not between 5 and 10")

You can use the not operator to negate a boolean expression. For example:

if not x > 5:
    print("x is not greater than 5")

For more information please visit python.org

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