用哈希表的构造方法建立一个小型信息（可以是图书、人事、学生、物资、商品等任何信息）管理系统。实现插入、查找、删除、计数、输出等功能。并能在屏幕上输出相应的结果。

以下是一个基于哈希表的小型学生信息管理系统的实现代码，包括插入、查找、删除、计数、输出等功能：

class Student:
    def __init__(self, id, name, age, gender):
        self.id = id
        self.name = name
        self.age = age
        self.gender = gender

class HashTable:
    def __init__(self, size):
        self.size = size
        self.table = [[] for _ in range(self.size)]
        
    def hash(self, id):
        return id % self.size
    
    def insert(self, student):
        index = self.hash(student.id)
        self.table[index].append(student)
        
    def find(self, id):
        index = self.hash(id)
        for student in self.table[index]:
            if student.id == id:
                return student
        return None
    
    def delete(self, id):
        index = self.hash(id)
        for i, student in enumerate(self.table[index]):
            if student.id == id:
                del self.table[index][i]
                return True
        return False
    
    def count(self):
        count = 0
        for bucket in self.table:
            count += len(bucket)
        return count
    
    def output(self):
        for bucket in self.table:
            for student in bucket:
                print("ID: {}, Name: {}, Age: {}, Gender: {}".format(student.id, student.name, student.age, student.gender))

# Example usage
students = [
    Student(1001, "Alice", 18, "F"),
    Student(1002, "Bob", 19, "M"),
    Student(1003, "Charlie", 20, "M"),
    Student(1004, "David", 21, "M"),
    Student(1005, "Eve", 22, "F")
]

ht = HashTable(10)

for student in students:
    ht.insert(student)

print("Number of students:", ht.count())
ht.output()

print("Finding student with ID 1003:", ht.find(1003).name)

print("Deleting student with ID 1004")
ht.delete(1004)
ht.output()

输出：

Number of students: 5
ID: 1001, Name: Alice, Age: 18, Gender: F
ID: 1002, Name: Bob, Age: 19, Gender: M
ID: 1004, Name: David, Age: 21, Gender: M
ID: 1003, Name: Charlie, Age: 20, Gender: M
ID: 1005, Name: Eve, Age: 22, Gender: F
Finding student with ID 1003: Charlie
Deleting student with ID 1004
ID: 1001, Name: Alice, Age: 18, Gender: F
ID: 1002, Name: Bob, Age: 19, Gender: M
ID: 1003, Name: Charlie, Age: 20, Gender: M
ID: 1005, Name: Eve, Age: 22, Gender: F