How can Python output a triangle?

Python offers various ways to output a triangle. Here are two commonly used methods:

Option 1: Utilize nested loops.

n = 5  # 三角形的行数
for i in range(n):
    for j in range(i + 1):
        print("*", end="")
    print()

Output result:

*
**
***
****
*****

Option 2: Implementing string multiplication.

n = 5  # 三角形的行数
for i in range(n):
    print("*" * (i + 1))

Output of the result:

*
**
***
****
*****

You can change the size of the triangle by adjusting the value of variable n.