In Python, conditional statements allow you to execute specific blocks of code based on certain conditions. Here are the primary conditional statements used in Python:

1. if Statement

The if statement is the most basic form of conditional statement.

age = 18

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

2. if..else Statement

The else statement follows an if statement and runs if the if condition is false.

age = 16

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

3. if..elif..else Statement

The elif (short for "else if") statement allows you to check multiple conditions.

score = 85

if score >= 90:
    print("Grade: A")
elif score >= 80:
    print("Grade: B")
elif score >= 70:
    print("Grade: C")
else:
    print("Grade: D or lower")

4. Nested if Statements

You can nest multiple if statements within each other to check for more complex conditions.

num = 10

if num > 0:
    if num % 2 == 0:
        print("The number is positive and even.")
    else:
        print("The number is positive and odd.")
else:
    print("The number is non-positive.")

5. if Statements with Logical Operators

You can combine conditions using logical operators: and, or, and not.

x = 5
y = 10

if x > 0 and y > 0:
    print("Both numbers are positive.")

if x > 0 or y > 0:
    print("At least one number is positive.")

if not (x < 0):
    print("x is not negative.")

6. Ternary Conditional Operator

Python also supports a shorthand for if-else using the ternary conditional operator.

age = 30
status = "adult" if age >= 18 else "minor"
print(status)  # Outputs: adult

These are the basic conditional statements you can use in Python. If you have any specific scenarios or need further explanations, let me know!