votes.txt文件内容如下：

Alice
Bob
Alice
Charlie
Bob
Alice
Alice

执行的Python代码如下：

def count_votes(filename):
    vote_count = {}
    file = None
    try:
        file = open(filename, 'r')
        for line in file:
            name = line.strip()
            if name in vote_count:
                vote_count[name] += 1
            else:
                vote_count[name] = 1
    except FileNotFoundError:
        print(f"错误: 文件 {filename} 不存在。")
    except IOError:
        print(f"错误: 读取文件 {filename} 时发生I/O错误。")
    finally:
        if file:
            file.close()
    return vote_count

result = count_votes('votes.txt')
print(result)