self._reset()
时间: 2023-10-27 22:29:51 浏览: 49
`self._reset()` is a method call that is used to reset the state of an object. The `_reset()` method is usually defined within a class and is used to reset the instance variables of that class to their default values. This method can be called to reset the object whenever necessary, such as when starting a new computation or when an error occurs.
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class Solver(object): def __init__(self, model, data, **kwargs): self.model = model self.X_train = data['X_train'] self.y_train = data['y_train'] self.X_val = data['X_val'] self.y_val = data['y_val'] # Unpack keyword arguments # pop(key, default):删除kwargs对象中key,如果存在该key,返回该key对应的value,否则,返回default值。 self.update_rule = kwargs.pop('update_rule', 'sgd') self.optim_config = kwargs.pop('optim_config', {}) self.lr_decay = kwargs.pop('lr_decay', 1.0) self.batch_size = kwargs.pop('batch_size', 2) self.num_epochs = kwargs.pop('num_epochs', 10) self.print_every = kwargs.pop('print_every', 10) self.verbose = kwargs.pop('verbose', True) if len(kwargs) > 0: extra = ', '.join('"%s"' % k for k in kwargs.keys()) raise ValueError('Unrecognized arguments %s' % extra) if not hasattr(optim, self.update_rule): raise ValueError('Invalid update_rule "%s"' % self.update_rule) self.update_rule = getattr(optim, self.update_rule) self._reset()
这是一个Python类 Solver,它的构造函数有三个参数:model,data,和kwargs。其中,model是一个模型对象,data包含训练集和验证集的数据,kwargs是一些可选参数。构造函数会将数据集和一些可选参数存储在对象中。这个类的目的是训练模型,它会使用优化器来更新模型的参数。优化器的类型由可选参数update_rule指定,优化器的配置由optim_config指定。还有其他一些可选参数,如学习率衰减率lr_decay、批次大小batch_size、训练轮数num_epochs等。如果有未知的可选参数,构造函数会引发ValueError异常。如果update_rule不是优化器的有效名称,也会引发ValueError异常。最后,构造函数会调用_reset()方法初始化一些训练变量。
import sys from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QPushButton, QVBoxLayout, QHBoxLayout from PyQt5.QtCore import Qt class QueueSystem(QWidget): def __init__(self): super().__init__() self.queue = [] # 存储队列信息 self.current_number = 0 # 当前的序号 self.initUI() def initUI(self): # 创建控件 self.label_title = QLabel('排队取号系统', self) self.label_number = QLabel('当前序号:{}'.format(self.current_number), self) self.label_queue = QLabel('等待人数:{}'.format(len(self.queue)), self) self.button_get_number = QPushButton('取号', self) self.button_reset = QPushButton('重置', self) # 设置控件样式 self.label_title.setAlignment(Qt.AlignCenter) self.label_title.setStyleSheet('font-size: 24px;') self.label_number.setStyleSheet('font-size: 18px;') self.label_queue.setStyleSheet('font-size: 18px;') self.button_get_number.setStyleSheet('font-size: 18px;') self.button_reset.setStyleSheet('font-size: 18px;') # 创建布局 vbox = QVBoxLayout() vbox.addWidget(self.label_title) vbox.addWidget(self.label_number) vbox.addWidget(self.label_queue) hbox = QHBoxLayout() hbox.addWidget(self.button_get_number) hbox.addWidget(self.button_reset) vbox.addLayout(hbox) self.setLayout(vbox) # 连接信号槽 self.button_get_number.clicked.connect(self.get_number) self.button_reset.clicked.connect(self.reset) # 设置窗口属性 self.setWindowTitle('排队取号系统') self.setGeometry(300, 300, 300, 200) self.show() def get_number(self): self.current_number += 1 self.queue.append(self.current_number) self.update_info() def reset(self): self.current_number = 0 self.queue = [] self.update_info() def update_info(self): self.label_number.setText('当前序号:{}'.format(self.current_number)) self.label_queue.setText('等待人数:{}'.format(len(self.queue))) def notify(self, number): if len(self.queue) > 0 and self.queue[0] == number: self.queue.pop(0) self.update_info() print('叫号:{}'.format(number)) if __name__ == '__main__': app = QApplication(sys.argv) queue_system = QueueSystem() sys.exit(app.exec_()) 优化该代码,使窗口最大化且不可以放大缩小,具备打印取号和记录当天取号记录功能
import sys
from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QPushButton, QVBoxLayout, QHBoxLayout, QPlainTextEdit, QSizePolicy
from PyQt5.QtGui import QFont
from PyQt5.QtCore import Qt
class QueueSystem(QWidget):
def __init__(self):
super().__init__()
self.queue = [] # 存储队列信息
self.current_number = 0 # 当前的序号
self.history = [] # 存储取号历史记录
self.initUI()
def initUI(self):
# 创建控件
self.label_title = QLabel('排队取号系统', self)
self.label_number = QLabel('当前序号:{}'.format(self.current_number), self)
self.label_queue = QLabel('等待人数:{}'.format(len(self.queue)), self)
self.button_get_number = QPushButton('取号', self)
self.button_reset = QPushButton('重置', self)
self.button_print_history = QPushButton('打印取号记录', self)
self.text_edit_history = QPlainTextEdit(self)
self.text_edit_history.setStyleSheet('font-size: 14px;')
self.text_edit_history.setReadOnly(True)
self.text_edit_history.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
font = QFont()
font.setFamily('Consolas')
self.text_edit_history.setFont(font)
# 设置控件样式
self.label_title.setAlignment(Qt.AlignCenter)
self.label_title.setStyleSheet('font-size: 24px;')
self.label_number.setStyleSheet('font-size: 18px;')
self.label_queue.setStyleSheet('font-size: 18px;')
self.button_get_number.setStyleSheet('font-size: 18px;')
self.button_reset.setStyleSheet('font-size: 18px;')
self.button_print_history.setStyleSheet('font-size: 18px;')
# 创建布局
vbox = QVBoxLayout()
vbox.addWidget(self.label_title)
vbox.addWidget(self.label_number)
vbox.addWidget(self.label_queue)
hbox1 = QHBoxLayout()
hbox1.addWidget(self.button_get_number)
hbox1.addWidget(self.button_reset)
hbox1.addWidget(self.button_print_history)
vbox.addLayout(hbox1)
vbox.addWidget(self.text_edit_history)
self.setLayout(vbox)
# 连接信号槽
self.button_get_number.clicked.connect(self.get_number)
self.button_reset.clicked.connect(self.reset)
self.button_print_history.clicked.connect(self.print_history)
# 设置窗口属性
self.setWindowTitle('排队取号系统')
self.setGeometry(300, 300, 300, 200)
self.setFixedSize(600, 500) # 设置窗口大小固定
self.show()
def get_number(self):
self.current_number += 1
self.queue.append(self.current_number)
self.history.append(self.current_number) # 记录取号历史记录
self.update_info()
def reset(self):
self.current_number = 0
self.queue = []
self.history = [] # 重置历史记录
self.update_info()
self.text_edit_history.clear()
def update_info(self):
self.label_number.setText('当前序号:{}'.format(self.current_number))
self.label_queue.setText('等待人数:{}'.format(len(self.queue)))
def notify(self, number):
if len(self.queue) > 0 and self.queue[0] == number:
self.queue.pop(0)
self.update_info()
print('叫号:{}'.format(number))
def print_history(self):
history_str = '\n'.join([str(num) for num in self.history]) # 将历史记录转换为字符串
self.text_edit_history.setPlainText(history_str)
if __name__ == '__main__':
app = QApplication(sys.argv)
queue_system = QueueSystem()
sys.exit(app.exec_())