{"id":652,"date":"2017-06-22T14:17:05","date_gmt":"2017-06-22T06:17:05","guid":{"rendered":"http:\/\/www.mrtblog.cn\/?p=652"},"modified":"2023-03-05T18:29:52","modified_gmt":"2023-03-05T10:29:52","slug":"python%e4%bd%bf%e7%94%a8pyqt4%e5%88%9b%e5%bb%bawindows%e5%ba%94%e7%94%a8%e7%aa%97%e4%bd%93","status":"publish","type":"post","link":"http:\/\/www.mrtblog.cn\/?p=652","title":{"rendered":"[python]\u4f7f\u7528PyQt4\u521b\u5efawindows\u5e94\u7528\u7a97\u4f53"},"content":{"rendered":"
<\/span> 1,267<\/span> Views<\/span><\/div>

\u6570\u636e\u6316\u6398\u5b9e\u8bad\u8bfe\uff0c\u4f5c\u4e1a\u8981\u6c42\uff1a\u6d4b\u8bd5\u4f7f\u7528\u5206\u7c7b\u5de5\u5177\u3001\u805a\u7c7b\u5de5\u5177\u4ee5\u53ca\u521b\u5efa\u6570\u636e\u6316\u6398\u7b97\u6cd5\u7684\u6f14\u793a\u7a0b\u5e8f\u3002\u524d\u4e24\u4e2a\u90fd\u7b97\u597d\u8bf4\uff0c\u6700\u540e\u4e00\u4e2a\u4efb\u52a1\u5c45\u7136\u662f\u8bbe\u8ba1\u4e00\u4e2a\u754c\u9762\u6f14\u793a\u6570\u636e\u6316\u6398\u7684\u90e8\u5206\u7b97\u6cd5\u3002\u6000\u7740\u5bf9python\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u548c\u9762\u5411\u7a97\u4f53\u7f16\u7a0b\u6781\u4e0d\u4fe1\u4efb\u7684\u6001\u5ea6\uff0c\u771f\u7684\u5728\u7f51\u4e0a\u627e\u5230\u4e86python\u4e13\u7528\u7684windows\u7a97\u4f53\u5f00\u53d1\u7ec4\u4ef6PyQt4 for Python 2.7 and windows 64bit\u3002<\/p>\n

1.\u5b89\u88c5PtQt4<\/p>\n

\u4e0e\u60f3\u8c61\u7684\u4e0d\u540c\uff0cPyQt4\u5b89\u88c5\u975e\u5e38\u65b9\u4fbf\uff0c\u53ea\u8981\u548cpython\u7248\u672c\u4ee5\u53cawindows\u7248\u672c\u4e00\u81f4\uff0c\u5b89\u88c5\u65f6\u4f1a\u5728Python\u7684\u8ddf\u76ee\u5f55\u4e0b\u5b89\u88c5\uff0c\u6d4b\u8bd5\uff1a<\/p>\n

\nimport sys\nfrom PyQt4 import QtGui\n<\/code><\/pre>\n
\u6ca1\u6709\u62a5\u9519\u5373\u5b89\u88c5\u5b8c\u6210<\/p>\n
2.PyQt4\u7684\u7b80\u5355\u8c03\u7528<\/p>\n
PyQt4\u521b\u5efa\u7a97\u4f53\u7684\u8fc7\u7a0b\u4e3a\uff1a\u521b\u5efaapplication\u5bf9\u8c61->\u521b\u5efa\u7a97\u4f53\u5bf9\u8c61->\u663e\u793a\u7a97\u4f53\u5bf9\u8c61->\u8c03\u7528\u5b8c\u5168\u9000\u51fa\u76d1\u542c\u670d\u52a1<\/p>\n
\nimport sys\nfrom PyQt4 import QtGui\napp = QtGui.QApplication(sys.argv)\nwidget = QtGui.QWidget()\nwidget.resize(250, 150)\nwidget.setWindowTitle('simple')\nwidget.show()\n\nsys.exit(app.exec_())\n<\/code><\/pre>\n
3.\u4f7f\u7528PyQt4\u521b\u5efa\u6f14\u793a\u7a0b\u5e8f<\/p>\n
\u5173\u4e8ePyQt4\u5404\u4e2a\u7ec4\u4ef6\u7684\u6210\u5458\u548c\u65b9\u6cd5\u5c31\u4e0d\u8bb0\u5f55\u4e86\uff0c\u76f4\u63a5\u4e0a\u4ee3\u7801\uff0c\u505a\u51fa\u6765\u8fd8\u662f\u633a\u6709\u610f\u601d\u7684<\/p>\n
\n#-*- coding:utf-8 -*-\nfrom PyQt4.QtGui import *\nfrom PyQt4.QtCore import *\nfrom PyQt4.QtGui import QMessageBox\nimport sys\nQTextCodec.setCodecForTr(QTextCodec.codecForName("utf8"))\n\n\nclass LayoutDialog(QDialog):\n    def __init__(self,parent=None):\n        super(LayoutDialog,self).__init__(parent)\n        self.setWindowTitle(self.tr("\u6570\u636e\u6316\u6398\u7b97\u6cd5\u6f14\u793a"))\n        self.setGeometry(400, 200, 1200, 600)\n\n        data_label=QLabel(self.tr("\u9009\u62e9\u6570\u636e\u96c6:"))\n        classify_label=QLabel(self.tr("\u5206\u7c7b\u5668:"))\n        normalization_label=QLabel(self.tr("\u5f52\u4e00\u5316:"))\n        parameter_label=QLabel(self.tr("\u8f93\u5165\u53c2\u6570:"))\n        validation_label=QLabel(self.tr("\u9a8c\u8bc1\u6bd4\u4f8b:"))\n        otherLabel=QLabel(self.tr("\u5907\u6ce8:\u8f93\u5165\u7684\u53c2\u6570\u4ee5\u5206\u53f7\u7ed3\u675f\uff0c\u56de\u8f66\u6362\u884c    \u4f8b\uff1ac=1.0;"))\n        otherLabel.setFrameStyle(QFrame.Panel|QFrame.Sunken)\n\n        self.data_comboBox=QComboBox()\n        self.data_comboBox.insertItem(0,self.tr("iris"))\n        self.data_comboBox.insertItem(1,self.tr("digits"))\n\n        self.classify_comboBox=QComboBox()\n        self.classify_comboBox.insertItem(0,self.tr("knn"))\n        self.classify_comboBox.insertItem(1,self.tr("tree"))\n        self.classify_comboBox.insertItem(2,self.tr("bayes"))\n        self.classify_comboBox.insertItem(3,self.tr("logistic"))\n        self.classify_comboBox.insertItem(4,self.tr("svm"))\n\n        self.normalization_comboBox=QComboBox()\n        self.normalization_comboBox.insertItem(0,self.tr("none"))\n        self.normalization_comboBox.insertItem(1,self.tr("standard"))\n        self.normalization_comboBox.insertItem(2,self.tr("max_min"))\n\n        self.parameter_text=QTextEdit()\n        self.validation_text=QLineEdit()\n\n        labelCol=0\n        contentCol=1\n\n        leftLayout=QGridLayout()\n        leftLayout.addWidget(data_label,1,labelCol)\n        leftLayout.addWidget(self.data_comboBox,1,contentCol)\n        leftLayout.addWidget(classify_label,2,labelCol)\n        leftLayout.addWidget(self.classify_comboBox,2,contentCol)\n        leftLayout.addWidget(normalization_label,3,labelCol)\n        leftLayout.addWidget(self.normalization_comboBox,3,contentCol)\n        leftLayout.addWidget(parameter_label,4,labelCol)\n        leftLayout.addWidget(self.parameter_text,4,contentCol)\n        leftLayout.addWidget(validation_label,5,labelCol)\n        leftLayout.addWidget(self.validation_text,5,contentCol)\n        leftLayout.addWidget(otherLabel,6,labelCol,1,2)\n        leftLayout.setColumnStretch(0,1)\n        leftLayout.setColumnStretch(1,3)\n\n        result_label=QLabel(self.tr("\u9884\u6d4b\u7ed3\u679c:"))\n        self.descTextEdit=QTextEdit()\n\n        rightLayout=QVBoxLayout()\n        rightLayout.setMargin(10)\n        rightLayout.addWidget(result_label)\n        rightLayout.addWidget(self.descTextEdit)\n\n        OKPushButton=QPushButton(self.tr("\u786e\u5b9a"))\n        CancelPushButton=QPushButton(self.tr("\u9000\u51fa"))\n        bottomLayout=QHBoxLayout()\n        bottomLayout.addStretch()\n        bottomLayout.addWidget(OKPushButton)\n        bottomLayout.addWidget(CancelPushButton)\n\n        mainLayout=QGridLayout(self)\n        mainLayout.setMargin(15)\n        mainLayout.setSpacing(10)\n        mainLayout.addLayout(leftLayout,0,0)\n        mainLayout.addLayout(rightLayout,0,1,1,40)\n        mainLayout.addLayout(bottomLayout,1,0,1,5)\n        mainLayout.setSizeConstraint(QLayout.SetFixedSize)\n\n        '''\u4e8b\u4ef6'''\n        OKPushButton.clicked.connect(self.OKPushButton_OnClick)\n        CancelPushButton.clicked.connect(self.CancelPushButton_OnClick)\n\n        '''\u521d\u59cb\u503c'''\n        self.data_comboBox.setCurrentIndex(0)\n        self.classify_comboBox.setCurrentIndex(0)\n        self.normalization_comboBox.setCurrentIndex(0)\n        self.validation_text.setText('0.2')\n\n    def CancelPushButton_OnClick(self):\n        QCoreApplication.instance().quit()\n\n    def OKPushButton_OnClick(self):\n        data_name = self.data_comboBox.currentText()\n        classify_name = self.classify_comboBox.currentText()\n        normalization_name = self.normalization_comboBox.currentText()\n        parameter_string = self.parameter_text.toPlainText()\n        validation_string = self.validation_text.text()\n        y_test,y_pred = self.load_datasets_and_classify(data_name,classify_name,normalization_name,parameter_string,validation_string)\n\n        from sklearn.metrics import classification_report\n        self.descTextEdit.setText(classification_report(y_test, y_pred))\n\n    def load_datasets_and_classify(self,data_name,classify_name,normalization_name,parameter_string,validation_string):\n        from sklearn import datasets\n        from sklearn.model_selection import train_test_split\n\n        rate=0.2\n        if validation_string !='':\n            try:\n                rate=float(validation_string)\n            except:\n                self.alert_info(u"\u8f93\u5165\u7684\u6570\u503c\u5fc5\u987b\u662f0~1\u7684\u6d6e\u70b9\u6570")\n                return\n\n        if data_name == 'iris':\n            origin_data=datasets.load_iris()\n        elif data_name == 'digits':\n            origin_data=datasets.load_digits()\n        else:\n            self.alert_info(u"\u672a\u77e5\u6570\u636e\u96c6")\n            return\n\n        data=origin_data.data\n        target=origin_data.target\n        x_train,x_test,y_train,y_test=train_test_split(data,target,test_size=rate)\n\n        if normalization_name=='standard':\n            from sklearn import preprocessing\n            scaler = preprocessing.StandardScaler().fit(x_train)\n            scaler.transform(x_train)\n            scaler.transform(x_test)\n        elif normalization_name=='max_min':\n            from sklearn import preprocessing\n            min_max_scaler = preprocessing.MinMaxScaler()\n            x_train = min_max_scaler.fit_transform(x_train)\n            x_test = min_max_scaler.fit_transform(x_test)\n        elif normalization_name=='none':\n            pass\n        else:\n            self.alert_info(u"\u672a\u77e5\u5f52\u4e00\u5316\u65b9\u5f0f")\n            return\n\n        if classify_name=='svm':\n            from sklearn.svm import SVC\n            clf = SVC()\n        elif classify_name=='bayes':\n            from sklearn import naive_bayes\n            clf = naive_bayes.GaussianNB()\n        elif classify_name=='tree':\n            from sklearn import tree\n            clf = tree.DecisionTreeClassifier()\n        elif classify_name=='knn':\n            from sklearn import neighbors\n            clf = neighbors.KNeighborsClassifier()\n        elif classify_name=='logistic':\n            from sklearn.linear_model import LogisticRegression\n            clf = LogisticRegression()\n        else:\n            self.alert_info(u"\u672a\u77e5\u5206\u7c7b\u5668")\n            return\n\n        clf.fit(x_train,y_train)\n        y_pred=clf.predict(x_test)\n        return y_test,y_pred\n\n    def alert_info(self,info):\n        QMessageBox.information(self,u"\u8b66\u544a",info)\n\nif __name__ == '__main__':\n    app=QApplication(sys.argv)\n    dialog=LayoutDialog()\n    dialog.show()\n    app.exec_()\n<\/code><\/pre>\n
\u6f14\u793a\u6548\u679c\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
1,267 Views\u6570\u636e\u6316\u6398\u5b9e\u8bad\u8bfe\uff0c\u4f5c\u4e1a\u8981\u6c42\uff1a\u6d4b\u8bd5\u4f7f\u7528\u5206\u7c7b\u5de5\u5177\u3001\u805a\u7c7b\u5de5\u5177\u4ee5\u53ca\u521b\u5efa\u6570\u636e\u6316\u6398\u7b97\u6cd5\u7684\u6f14\u793a\u7a0b\u5e8f\u3002\u524d\u4e24 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-652","post","type-post","status-publish","format-standard","hentry","category-st"],"_links":{"self":[{"href":"http:\/\/www.mrtblog.cn\/index.php?rest_route=\/wp\/v2\/posts\/652","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.mrtblog.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.mrtblog.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.mrtblog.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.mrtblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=652"}],"version-history":[{"count":2,"href":"http:\/\/www.mrtblog.cn\/index.php?rest_route=\/wp\/v2\/posts\/652\/revisions"}],"predecessor-version":[{"id":655,"href":"http:\/\/www.mrtblog.cn\/index.php?rest_route=\/wp\/v2\/posts\/652\/revisions\/655"}],"wp:attachment":[{"href":"http:\/\/www.mrtblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.mrtblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=652"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.mrtblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}