各位大神，帮忙看看，我的小代码运行不顺畅 :-(

代码如下:----------
def print_box(width, height, mark):
    for n in range(1,height + 1):
        print(mark * width)

def read_input(string):
    user_input = True
    while user_input:
        if int(input(string)) > 0:
            user_input = False
    return int(input(string))

def main():
    width = read_input("Enter the width of a frame: ")
    height = read_input("Enter the height of a frame: ")
    mark = input("Enter a print mark: ")
    print()
    print_box(width, height, mark)

if __name__ == "__main__":
    main()
目前方程和格式我不想做变动，期待结果:

Enter the width of a frame: -1
Enter the width of a frame: 0
Enter the width of a frame: -4
Enter the width of a frame: 4
Enter the height of a frame: -1
Enter the height of a frame: 0
Enter the height of a frame: 2
Enter a print mark: #


####
####

我的结果:
Enter the width of a frame: -1
Enter the width of a frame: 2
Enter the width of a frame: 3
Enter the height of a frame: 0
Enter the height of a frame: 8
Enter the height of a frame: 4
Enter a print mark: #


###
###
###
###

请帮忙看看，问题出在哪儿？为什么我的代码只读取第二个正数，而非第一个出现的正数？如何改进呢？非常感谢！！！

从23行开始，就全部报错

1. Enter the width of a frame: -1
   
2. Enter the width of a frame: 0
   
3. Enter the width of a frame: -4
   
4. Enter the width of a frame: 4
   
5. Enter the height of a frame: -1
   
6. Enter the height of a frame: 0
   
7. Enter the height of a frame: 2
   
8. Enter a print mark: #
   
9. 
   
10. 
    
11. ####
    
12. ####
    
13. 
    
14. 我的结果:
    
15. Enter the width of a frame: -1
    
16. Enter the width of a frame: 2
    
17. Enter the width of a frame: 3
    
18. Enter the height of a frame: 0
    
19. Enter the height of a frame: 8
    
20. Enter the height of a frame: 4
    
21. Enter a print mark: #
    
22. 
    

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1. 
   
2. # 樓主，你的問題不清晰，最好是連題目也發布。你這題我看過，題目大概是想列印出一個圖採用的寬，高度和圖案三個參數隨自己輸入
   
3. 
   
4. # 對於你的read_input(string)最後回傳了int(input(string))，也就代表回傳數據在最後又被更新了
   
5. # 必須清楚知道你的函數是要做什麼？是否有回傳值？，回傳什麼值？才能開始寫函數
   
6. # 以下是我的代碼，你參考看看：
   
7. 
   
8. def read_value():
   
9.     while True:
   
10.         try:
    
11.             w = int(input('enter the width of a frame: '))
    
12.             if w <= 0: continue
    
13.             break
    
14.         except ValueError: continue
    
15.     while True:
    
16.         try:
    
17.             h = int(input('enter the height of a frame: '))
    
18.             if h <= 0: continue
    
19.             break
    
20.         except ValueError: continue
    
21.     p = input('enter a print pattern: ')
    
22.     return [w, h, p]
    
23. 
    
24. def draw_rectangle(x: '[width, height, pattern]') -> 'draw a rectangle':
    
25.     print()
    
26.     for i in range(x[1]):
    
27.         print(x[2]*x[0])
    
28. 
    
29. def main():
    
30.     draw_rectangle(read_value())
    
31. 
    
32. if __name__ == '__main__':
    
33.     main()

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