密码强度检测Python源代码

一段非常简单的密码强度检测Python源代码，功能过于简单重构了遍，让它起码有点质量能拿出来分享。

import re
import tkinter as tk
class PasswordStrength:
    STRENGTHS = [
        ("无效的密码", "red"),
        ("非常弱的密码", "orange"),
        ("弱的密码", "yellow"),
        ("一般的密码", "green"),
        ("强的密码", "blue"),
        ("非常强的密码", "purple"),
    ]
    def __init__(self, password):
        self.password = password
        self.value = self.calculate_strength()
        self.text, self.color = self.STRENGTHS[self.value]
    def calculate_strength(self):
        strength = 0
        if len(self.password) >= 8:
            strength += 1
        if re.search(r"\d", self.password):
            strength += 1
        if re.search(r"[a-z]", self.password):
            strength += 1
        if re.search(r"[A-Z]", self.password):
            strength += 1
        if re.search(r"[!@#$%^&*()_+-=]", self.password):
            strength += 1
        return strength
class GUI(tk.Frame):
    def __init__(self, master):
        super().__init__(master)
        master.title("密码强度检测器")
        master.geometry(
            "400x200+{}+{}".format(
                (master.winfo_screenwidth() - 400) // 2,
                (master.winfo_screenheight() - 200) // 2,
            )
        )
        master.resizable(False, False)
        self.label = tk.Label(self, text="请输入密码：", font=("宋体", 16))
        self.entry = tk.Entry(self, show="*", font=("宋体", 16))
        self.entry.bind("<Return>", self.check)
        self.button = tk.Button(self, text="检测", font=("宋体", 16))
        self.button.bind("<Button-1>", self.check)
        self.result = tk.Label(self, text=" ", font=("宋体", 16), fg="gray")
        self.label.grid(row=0, column=0, padx=10, pady=10)
        self.entry.grid(row=0, column=1, padx=10, pady=10)
        self.button.grid(row=0, column=2, padx=10, pady=10)
        self.result.grid(row=1, column=0, columnspan=3, padx=10, pady=10)
        self.pack()
    def check(self, event):
        password = self.entry.get()
        strength = PasswordStrength(password)
        self.result.config(text=strength.text, fg=strength.color)
root = tk.Tk()
gui = GUI(root)
root.mainloop()