Python正则多边形面积计算程序print语句崩溃求助

Let's walk through the bugs in your code step by step to get it running without crashes:

• Hardcoded parameters overriding inputs: You've set sides = 5 and length = 7 directly inside the function. This means no matter what values you pass when calling polygon_area(), they'll get overwritten immediately. Delete those two lines to let the function use the arguments you provide.

• Syntax & math error in the return statement:

  • Your expression is missing a closing parenthesis at the end, which causes a syntax crash.
  • The trigonometric calculation is wrong: it should be tan(pi / sides) instead of tan(pi)/sides. tan(pi) equals 0, so your original code would try to divide by 0 (a huge red flag!)—the correct formula uses the tangent of π divided by the number of sides.

• Broken print statement:

  • You're referencing the function name polygon_area instead of calling it with arguments (like polygon_area(5, 7)).
  • The string formatting syntax is incomplete. You need to include a format specifier (like %.2f for a rounded float) to pair with the % operator, or use a modern f-string for cleaner code.

Corrected Code #

from math import tan, pi

def polygon_area(sides, length):
    """Returns the area of a regular polygon."""
    # Use the passed-in parameters instead of hardcoding
    return (sides * (length ** 2)) / (4 * tan(pi / sides))

# Example call with proper formatting
print("The area of the polygon is %.2f" % polygon_area(5, 7))
# Alternatively, using f-strings (Python 3.6+):
# print(f"The area of the polygon is {polygon_area(5, 7):.2f}")

When you run this, it'll correctly calculate the area of a 5-sided polygon with side length 7 and print the result without crashing.

内容的提问来源于stack exchange，提问作者MarthaV