**pyqt_example_learn<calendar>

from PyQt4 import QtCore, QtGui

class MainWindow(QtGui.QMainWindow):
    def __init__(self):
        super(MainWindow,self).__init__()
        
        self.selectedDate = QtCore.QDate.currentDate()
        self.fontSize = 10
        
        centralWidget = QtGui.QWidget()
        
        dateLabel = QtGui.QLabel('date')
        monthCombo = QtGui.QComboBox()
        
        for month in range(1,13):
            monthCombo.addItem(QtCore.QDate.longMonthName(month))
            
        yearEdit = QtGui.QDateTimeEdit()
        yearEdit.setDisplayFormat('xxxx')
        yearEdit.setDateRange(QtCore.QDate(1753,1,1),QtCore.QDate(8000,1,1))
        
        monthCombo.setCurrentIndex(self.selectedDate.month())
        yearEdit.setDate(self.selectedDate)
        
        self.fontSizeLabel = QtGui.QLabel('font size')
        self.fontSizeSpinBox = QtGui.QSpinBox()
        self.fontSizeSpinBox.setRange(1,64)
        self.fontSizeSpinBox.setValue(10)
        
        self.editor = QtGui.QTextBrowser()
        self.insertCalendar()
        
        monthCombo.activated.connect(self.setMonth)
        yearEdit.dateChanged.connect(self.setYear)
        self.fontSizeSpinBox.valueChanged.connect(self.setfontSize)
        
        layout_x = QtGui.QHBoxLayout()
        layout_x.addWidget(dateLabel)
        layout_x.addWidget(monthCombo)
        layout_x.addWidget(yearEdit)
        layout_x.addSpacing(24)
        layout_x.addWidget(self.fontSizeLabel)
        layout_x.addWidget(self.fontSizeSpinBox)
        layout_x.addStretch(1)
        
        layout_y = QtGui.QVBoxLayout()
        layout_y.addLayout(layout_x)
        layout_y.addWidget(self.editor,1)
        centralWidget.setLayout(layout_y)
        
        self.setCentralWidget(centralWidget)
        
    def insertCalendar(self):
        self.editor.clear()
        cursor = self.editor.textCursor()
        cursor.beginEditBlock()
        
        date = QtCore.QDate(self.selectedDate.year(),self.selectedDate.month(),1)
        
        tableFormat = QtGui.QTextTableFormat()
        tableFormat = QtGui.QTextTableFormat()
        tableFormat.setAlignment(QtCore.Qt.AlignHCenter)
        tableFormat.setBackground(QtGui.QColor('#e0e0e0'))
        tableFormat.setCellPadding(2)
        tableFormat.setCellSpacing(4)
        constraints = [QtGui.QTextLength(QtGui.QTextLength.PercentageLength, 14),
                       QtGui.QTextLength(QtGui.QTextLength.PercentageLength, 14),
                       QtGui.QTextLength(QtGui.QTextLength.PercentageLength, 14),
                       QtGui.QTextLength(QtGui.QTextLength.PercentageLength, 14),
                       QtGui.QTextLength(QtGui.QTextLength.PercentageLength, 14),
                       QtGui.QTextLength(QtGui.QTextLength.PercentageLength, 14),
                       QtGui.QTextLength(QtGui.QTextLength.PercentageLength, 14)]

        tableFormat.setColumnWidthConstraints(constraints)
        #tableFormat
        table = cursor.insertTable(1,7,tableFormat)
        frame = cursor.currentFrame()
        frameFormat = frame.frameFormat()
        frameFormat.setBorder(1)
        frame.setFrameFormat(frameFormat)
        format = cursor.charFormat()
        format.setFontPointSize(self.fontSize)
        boldFormat = QtGui.QTextCharFormat(format)
        boldFormat.setFontWeight(QtGui.QFont.Bold)
        
        highlightedFormat = QtGui.QTextCharFormat(boldFormat)
        highlightedFormat.setBackground(QtCore.Qt.yellow)
        
        for weekday in range(1,8):
            cell = table.cellAt(0,weekday-1)
            cellCursor = cell.firstCursorPosition()
            cellCursor.insertText(QtCore.QDate.longDayName(weekday),
                                  boldFormat)
        table.insertRows(table.rows(),1)
        while date.month() == self.selectedDate.month():
            weekday = date.dayOfWeek()
            cell = table.cellAt(table.rows()-1,weekday-1)
            cellCursor = cell.firstCursorPosition()
            
            if date == QtCore.QDate.currentDate():
                cellCursor.insertText(str(date.day()),
                                      highlightedFormat)
            else:
                cellCursor.insertText(str(date.day()),format)
            date = date.addDays(1)
            
            if weekday == 7 and date.month()==self.selectedDate.month():
                table.insertRows(table.rows(),1)
        cursor.endEditBlock()
        self.setWindowTitle("calendar for %s %d" % (QtCore.QDate.longMonthName(self.selectedDate.month()),self.selectedDate.year()))

    def setMonth(self,month):
        self.selectedDate = QtCore.QDate(self.selectedDate.year(),
                                         month+1,self.selectedDate.day())
        self.insertCalendar()
    def setYear(self,date):
        self.selectedDate = QtCore.QDate(date.year(),
                                         self.selectedDate.month(),self.selectedDate.day())
        self.insertCalendar()
    def setfontSize(self,size):
        self.fontSize = size
        self.insertCalendar()
        
        

if __name__ == '__main__':

    import sys

    app = QtGui.QApplication(sys.argv)
    window = MainWindow()
    window.resize(640, 256)
    window.show()
    sys.exit(app.exec_())