How to implement a random roll call system based on Python

Effect display

Create a folder like this, and then write the names to be randomly called in it

After importing, here will show how many personnel information you have imported

After clicking to start roll call, a lucky person will be randomly selected from the imported names~

The effect is probably like this, let’s take a look at the code

Code display

Import module

There are third-party modules in it, you need to install it yourself

from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *

from qdarkstyle import load_stylesheet_pyqt5

import os
import sys
import time
import random

class WorkThread(QThread):
    trigger = pyqtSignal(str)
    finished = pyqtSignal(bool)

    def __init__(self, parent=None):
        super(WorkThread, self).__init__(parent)
        self.parent = parent
        self.working = True

    def __del__(self):
        self.working = False
        self.wait()

    def run(self):
        data_list = self.parent.data_list
        if len(data_list) >= 1:
            ran = random.randint(6, 10)
            print('遍历次数：', ran)
            for a in range(ran):
                name = random.choice(data_list)
                self.trigger.emit(name)
                print(name)
                time.sleep(0.6)
            self.finished.emit(True)
        else:
            self.trigger.emit('无数据')


class ClassCollSystem(QWidget):
    def __init__(self):
        super(ClassCollSystem, self).__init__()
        self.data_list = []
        self.init_ui()

Sub-thread call

    def init_ui(self):
        self.thread_ = WorkThread(self)
        self.thread_.trigger.connect(self.set_name)
        self.thread_.finished.connect(self.finished)

Application initialization information

        self.setWindowTitle('课堂点名系统')
        self.setWindowIcon(QIcon('课堂点名.ico'))
        self.setFixedSize(500, 350)

Name information layout

        vbox_name = QVBoxLayout()
        self.current_name = QLabel()
        self.current_name.setText('随机点名啦')
        self.current_name.setStyleSheet(
            'font-size:50px;text-align:center;font-weight:bold;font-family:"Microsoft JhengHei";')

        vbox_name.addWidget(self.current_name)
        vbox_name.setAlignment(Qt.AlignCenter)

Start information layout

        vbox_start = QVBoxLayout()
        self.start_btn = QPushButton()
        self.start_btn.setText('开始点名')
        self.start_btn.setFixedSize(160, 50)
        self.start_btn.setStyleSheet(
            'font-size:30px;font-weight:bold;text-align:center;font-family:"Microsoft JhengHei";')
        self.start_btn.clicked.connect(self.start_btn_click)

        vbox_start.addWidget(self.start_btn)
        vbox_start.setAlignment(Qt.AlignCenter)
        vbox_start.addSpacing(80)

Data information layout

        vbox_data = QHBoxLayout()
        self.message = QLabel()
        self.message.setText('信息提示')
        self.message.setStyleSheet(
            'font-size:12px;')

        self.import_btn = QPushButton()
        self.import_btn.setText('导入数据')
        self.import_btn.setFixedSize(90, 25)
        self.import_btn.clicked.connect(self.import_btn_click)

        vbox_data.addWidget(self.message)
        vbox_data.addStretch(1)
        vbox_data.addWidget(self.import_btn)

Overall layout

        vbox = QVBoxLayout()
        vbox.addLayout(vbox_name)
        vbox.addLayout(vbox_start)
        vbox.addLayout(vbox_data)

        self.setLayout(vbox)

    def start_btn_click(self):
        if self.start_btn.text().strip() == '开始点名':
            self.thread_.start()
        else:
            self.start_btn.setText('开始点名')

    def set_name(self, name):
        self.current_name.setText(name)

    def finished(self, finished):
        if finished is True:
            self.start_btn.setText('就是你了')

    def import_btn_click(self):
        file = QFileDialog.getOpenFileName(self, '选择文件', os.getcwd(), 'Text File(*.txt)')
        file_path = file[0]
        print(file_path)
        fl = open(str(file_path), 'r', encoding='utf-8')
        self.data_list = fl.read().strip().split('\n')
        print(self.data_list)
        self.message.setText('信息提示 | 成功导入[' + str(len(self.data_list)) + ']条人员信息')

Run

if __name__ == '__main__':
    app = QApplication(sys.argv)
    app.setStyleSheet(load_stylesheet_pyqt5())
    main = ClassCollSystem()
    main.show()
    sys.exit(app.exec_())

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