How does python print a triangle?

To print a triangle, you can achieve this using a loop statement.

Here is an example of using nested loops to print an isosceles right triangle.

n = 5  # 三角形的行数

# 外层循环控制行数
for i in range(n):
    # 内层循环控制每行的列数
    for j in range(i + 1):
        print("*", end="")
    print()  # 换行

Executing the above code will produce the following output:

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

You can modify the value of n as needed to control the size of the triangle.

If you need to print other types of triangles, you can modify the logic of the inner loop according to specific requirements.