<p>是最初的几个爬虫，让我认识了Python这个新朋友，虽然才刚认识了几天，但感觉有种莫名的默契感。每当在别的地方找不到思路，总能在Python找到解决的办法。自动关机，在平时下载大文件，以及跑程序的时候能用到的，刚才写了个windows自动关机的小程序，程序过于简单，就当是玩玩吧，当然还有很多可改进的地方。下面正文：</p>    <h2>UI制作：</h2>    <p>照旧，笔者由Qt制作完成需要的ui，包括label,label_2,label_3,lable_4,lineEdit,lineEdit_2,pushButton组件.大致布局如下</p>    <p><img src="https://simg.open-open.com/show/c90e21a540d8b56825cccc42dd83c5f3.png"></p>    <p>两个lineEdit等待用户输入期望关机的时间。下面的Label用来显示操作后的返回信息。pushButton用于提交命令。ui制作完成。</p>    <h2>UI转为py文件：</h2>    <p>这里笔者装的是PyQt5，并添加了环境变量。所以转化的cmd命令(cd到ui所在目录)：</p>    <pre>  <code class="language-python">pyuic5shut.ui -o shut.py  </code></pre>    <p>执行成功之后在ui所在目录生成shut.py文件。</p>    <h2>显示窗口：</h2>    <p>直接生成的py文件运行是看不到窗口的，我们要加上一些必要的内容才能显示我们的窗口：</p>    <p>代码最上面加上</p>    <pre>  <code class="language-python">importsys  </code></pre>    <p>最后加上</p>    <pre>  <code class="language-python">if __name__ == '__main__':        app = QtWidgets.QApplication(sys.argv)      Form = QtWidgets.QWidget()      ui = Ui_x()//其中Ui_x为生成的class名      ui.setupUi(Form)       Form.show()      sys.exit(app.exec_())  </code></pre>    <p>之后再运行shut.py就能看到窗口了。</p>    <h2>功能实现：</h2>    <p>思考一下程序的期望功能，使Windows自动关机。cmd命令是个不错的选择。于是笔者找了下，python执行cmd命令的方法：</p>    <pre>  <code class="language-python">os.popen('at 22:30 shutdown -s')  </code></pre>    <p>调用cmd，执行命令。而其中的22和30是等待用户输入的数据。因此，应该用两个lineEdit中获取到的合法数字替换对应的h和m。用到获取lineEdit内容的方法：</p>    <pre>  <code class="language-python">h = self.lineEdit.text()  m = self.lineEdit_2.text()  </code></pre>    <p>然后以h，m替换执行命令中的时，分.</p>    <p>接着就是pushButton的部分了。为pushButton添加监听事件click。</p>    <pre>  <code class="language-python">self.pushButton = QtWidgets.QPushButton(shut,clicked=self.sd)  </code></pre>    <p>其中，self.sd为触发该事件后，需要执行的操作。</p>    <h2>完整代码:</h2>    <p>一些关键的部分，叙述完毕，至于返回信息部分，笔者在这里不再详述。下面贴出来Windows自动关机完整的代码:</p>    <pre>  <code class="language-python"># -*- coding: utf-8 -*-     # Form implementation generated from reading ui file 'shut.ui'  #  # Created: Mon Mar 20 18:10:31 2017  #      by: PyQt5 UI code generator 5.2.1  #  # WARNING! All changes made in this file will be lost!  importsys  importos  fromPyQt5importQtCore, QtGui, QtWidgets     class Ui_shut(object):      flag = True      defsetupUi(self, shut):          shut.setObjectName("shut")          shut.resize(411, 170)          shut.setFixedSize(411,170)          self.label = QtWidgets.QLabel(shut)          self.label.setGeometry(QtCore.QRect(40, 50, 41, 51))          self.label.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))          self.label.setObjectName("label")          self.lineEdit = QtWidgets.QLineEdit(shut)          self.lineEdit.setGeometry(QtCore.QRect(70, 50, 71, 41))          self.lineEdit.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))          self.lineEdit.setObjectName("lineEdit")          self.label_2 = QtWidgets.QLabel(shut)          self.label_2.setGeometry(QtCore.QRect(150, 60, 31, 31))          self.label_2.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))          self.label_2.setObjectName("label_2")          self.lineEdit_2 = QtWidgets.QLineEdit(shut)          self.lineEdit_2.setGeometry(QtCore.QRect(180, 50, 71, 41))          self.lineEdit_2.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))          self.lineEdit_2.setObjectName("lineEdit_2")          self.label_3 = QtWidgets.QLabel(shut)          self.label_3.setGeometry(QtCore.QRect(260, 60, 31, 31))          self.label_3.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))          self.label_3.setObjectName("label_3")          self.pushButton = QtWidgets.QPushButton(shut,clicked=self.sd)          self.pushButton.setGeometry(QtCore.QRect(290, 50, 101, 41))          self.pushButton.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))          self.pushButton.setObjectName("pushButton")          self.label_4 = QtWidgets.QLabel(shut)          self.label_4.setGeometry(QtCore.QRect(0, 120, 411, 31))          self.label_4.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))          self.label_4.setObjectName("label_4")                    self.retranslateUi(shut)          QtCore.QMetaObject.connectSlotsByName(shut)         defretranslateUi(self, shut):          _translate = QtCore.QCoreApplication.translate          shut.setWindowTitle(_translate("shut", "Auto Shutdown by dearvee"))          self.label.setText(_translate("shut", "At："))          self.label_2.setText(_translate("shut", "H"))          self.label_3.setText(_translate("shut", "M"))          self.label_4.setText(_translate("shut", "Please input time of shutdown~"))          self.pushButton.setText(_translate("shut", "Set"))         defsd(self,shut):          h = self.lineEdit.text()          m = self.lineEdit_2.text()          if self.flag:              self.flag = False              try:                  os.popen('at '+h+':'+m+' shutdown -s')                  self.label_4.setText('Success! the system will shutdown at today '+h+':'+m+'.')                  self.pushButton.setText('Remove all')                  self.lineEdit.clear()                  self.lineEdit_2.clear()              except:                  self.label_4.setText('Something is wrong~')          else:              self.flag = True              try:                  os.popen('at /delete /yes')                  self.label_4.setText('Success! already removed~')                  self.pushButton.setText('Set')                  self.lineEdit.clear()                  self.lineEdit_2.clear()              except:                  self.label_4.setText('Something is wrong~')            if __name__ == '__main__':        app = QtWidgets.QApplication(sys.argv)      Form = QtWidgets.QWidget()      ui = Ui_shut()      ui.setupUi(Form)       Form.show()      sys.exit(app.exec_())  </code></pre>    <p>运行后，即出现如图操作窗口</p>    <p><img src="https://simg.open-open.com/show/2a3ffa771ed85cfd2a49fb80278e592f.png"></p>    <h2>运行效果：</h2>    <p>运行shut.py，输入12和53点击set，这时我们查看任务计划：</p>    <p><img src="https://simg.open-open.com/show/8367e20d7094eef0052368372552dcf4.png"></p>    <p><img src="https://simg.open-open.com/show/8e580d28d36b48409db7aad6666866d2.png"></p>    <p>发现任务已经在计划中。点击Remove，刷新任务计划。</p>    <p><img src="https://simg.open-open.com/show/c556b0fa78fb5db03146f23312262f83.png"></p>    <p>成功移除任务，功能实现</p>    <p>当然这只能在用户安装Python，并安装相关组件前提下才可运行。想要在任何windows使用，则需要下面的操作。</p>    <h2>打包：</h2>    <p>笔者打包用的是Python的Pyinstaller组件。cd 到shut.py所在目录后，执行cmd命令:</p>    <pre>  <code class="language-python">pyinstaller -w shut.py  </code></pre>    <p>这时，在shut.py所在目录生成dist文件夹。生成的exe路径。dist>>shut(Python源码文件名)>>shut.exe.前面顺利的话，双击shut.exe便会显示前面源码运行同样的窗口和操作。这样，你就可以把shut <strong>目录</strong> 整个发给你的朋友。他们就可以通过双击shut.exe使用你的程序了。</p>    <p>至此，关于最近做的windows自动关机小软件的经验叙述完毕~</p>    <p> </p>    <p>来自：http://python.jobbole.com/87556/</p>    <p> </p>