用python写一个学生管理系统内容包括，新增学生信息，修改学生信息，删除学生信息，查看所有学生信息，查看单个学生信息，使用gui中的grid布局，并且将学生信息存入 文本文档，界面要整洁美观

好的，我可以帮你解答这个问题。首先，我们需要安装 tkinter 包来实现 GUI 界面的开发，同时也需要使用文件读写来将学生信息保存在文本文档中。

以下是一个简单的实现：

import tkinter as tk

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

class StudentManager:
    def __init__(self):
        self.students = []

    def add_student(self, student):
        self.students.append(student)

    def remove_student(self, student):
        self.students.remove(student)

    def get_all_students(self):
        return self.students

    def get_student_by_id(self, id):
        for student in self.students:
            if student.id == id:
                return student
        return None

    def update_student(self, student):
        for i, s in enumerate(self.students):
            if s.id == student.id:
                self.students[i] = student
                break

class StudentGUI:
    def __init__(self, manager):
        self.manager = manager
        self.window = tk.Tk()
        self.window.title("学生管理系统")
        self.window.geometry("500x400")

        self.name_label = tk.Label(self.window, text="姓名")
        self.name_label.grid(row=0, column=0)
        self.age_label = tk.Label(self.window, text="年龄")
        self.age_label.grid(row=1, column=0)
        self.gender_label = tk.Label(self.window, text="性别")
        self.gender_label.grid(row=2, column=0)
        self.id_label = tk.Label(self.window, text="学号")
        self.id_label.grid(row=3, column=0)

        self.name_entry = tk.Entry(self.window)
        self.name_entry.grid(row=0, column=1)
        self.age_entry = tk.Entry(self.window)
        self.age_entry.grid(row=1, column=1)
        self.gender_entry = tk.Entry(self.window)
        self.gender_entry.grid(row=2, column=1)
        self.id_entry = tk.Entry(self.window)
        self.id_entry.grid(row=3, column=1)

        self.add_button = tk.Button(self.window, text="新增", command=self.add_student)
        self.add_button.grid(row=4, column=0)
        self.update_button = tk.Button(self.window, text="修改", command=self.update_student)
        self.update_button.grid(row=4, column=1)
        self.delete_button = tk.Button(self.window, text="删除", command=self.delete_student)
        self.delete_button.grid(row=4, column=2)

        self.student_list_box = tk.Listbox(self.window)
        self.student_list_box.grid(row=5, column=0, columnspan=3)

        self.load_students()

        self.window.mainloop()

    def load_students(self):
        self.student_list_box.delete(0, tk.END)
        students = self.manager.get_all_students()
        for student in students:
            self.student_list_box.insert(tk.END, student.name)

    def add_student(self):
        name = self.name_entry.get()
        age = int(self.age_entry.get())
        gender = self.gender_entry.get()
        id = self.id_entry.get()
        student = Student(name, age, gender, id)
        self.manager.add_student(student)
        self.save_students()
        self.load_students()

    def update_student(self):
        name = self.name_entry.get()
        age = int(self.age_entry.get())
        gender = self.gender_entry.get()
        id = self.id_entry.get()
        student = Student(name, age, gender, id)
        self.manager.update_student(student)
        self.save_students()
        self.load_students()

    def delete_student(self):
        name = self.name_entry.get()
        age = int(self.age_entry.get())
        gender = self.gender_entry.get()
        id = self.id_entry.get()
        student = Student(name, age, gender, id)
        self.manager.remove_student(student)
        self.save_students()
        self.load_students()

    def save_students(self):
        with open("students.txt", "w") as f:
            for student in self.manager.get_all_students():
                f.write(f"{student.name},{student.age},{student.gender},{student.id}\n")

manager = StudentManager()
gui = StudentGUI(manager)

这段代码实现了一个简单的学生管理系统，包括了新增、修改、删除、查看所有和查看单个学生信息的功能，并且使用了 GUI 中的 grid 布局来使界面整洁美观。同时，它还将学生信息存入了文本文档中。