I have attached a trimmed down version of the program. The issue I'm having is when I print N there is an extra * at the end that I haven't managed to remove from the code. I've been trying for hours now but I just can't seem to crack it.

我附上了一个精简版的程序。我遇到的问题是，当我打印N时，在末尾有一个额外的 *，我没有设法从代码中删除。我已经试了好几个小时了，但似乎就是破解不了。

I've changed +'s to -'s and vice versa. I've tried increasing and decreasing values. All I've managed to do is warp my output, but the extra * remains.

我已经将+‘S改为-’S，反之亦然。我尝试了增减值。我所做的只是扭曲了我的输出，但多余的*仍然存在。

Program:-

计划：-

def is_valid_word(word):
    valid_letters = set("ABNOTY")
    return all(letter in valid_letters for letter in word)

size=7

def get_pattern(letter, size):
    # Define patterns for each letter based on the specified size
    patterns = {
        'N': [" " + "*" + " " * (size - 2) + "*"] + [" " + "*" + " " * (i - 1) + "*" + " " * (size - i - 2) + "*" + " " for i in range(1, size)],

    }
    
    return patterns.get(letter, ["Invalid"])

def main():
    while True:
        word = input("Enter a valid word (or 'END' to stop): ")

        if word.upper() == "END":
            break

        if not is_valid_word(word):
            print("Error: Invalid input. Please enter a valid word.")
            continue

        letter_patterns = [get_pattern(letter, size) for letter in word]

        for i in range(size):
            for pattern in letter_patterns:
                print(pattern[i], end=" ")
            print()

if __name__ == "__main__":
    main()

What I am currently printing is
Output with extra * on bottom right

我当前打印的是在右下角带有额外*的输出

to print N you currently have 1 "pattern" for 1st line, then another for the rest of them. And this fails for the last line, which obviously has same pattern as the first one.

要打印N，当前第一行有1个“模式”，其余行有另一个“模式”。最后一行显然与第一行具有相同的模式，这一点失败了。

Updating your get_pattern to this code will do the trick:

将GET_Pattera更新为下面的代码将会起到作用：

def get_pattern(letter, size):
    # Define patterns for each letter based on the specified size
    patterns = {
        'N': [" " + "*" + " " * (size - 2) + "*"] + [" " + "*" + " " * (i - 1) + "*" + " " * (size - i - 2) + "*" + " " for i in range(1, size - 1)] + [" " + "*" + " " * (size - 2) + "*"],

    }

    return patterns.get(letter, ["Invalid"])

output:

输出：

Enter a valid word (or 'END' to stop): N
 *     * 
 **    *  
 * *   *  
 *  *  *  
 *   * *  
 *    **  
 *     * 
Enter a valid word (or 'END' to stop):