UI error for pycharm

[bakie]

when I run py script in pycharm for UI 


Code:
import from PySide.QtCore import * from PySide.QtGui import * import urllib2 class Form(QDialog): def __init__(self, parent=None): super(Form, self).__init__(parent) date = self.getdata() rates = sorted(self.rates.keys()) dateLabel = QLabel(date) self.fromComboBox = QComboBox() self.fromComboBox.addItems(rates) self.fromSpinBox = QDoubleSpinBox() self.fromSpinBox.setRange(0.01, 10000000.00) self.fromSpinBox.setValue(1.00) self.toComboBox = QComboBox() self.toComboBox.addItems(rates) self.toLabel = QLabel("1.00") grid = QGridLayout() grid.addWidget(dateLabel, 0, 0) grid.addWidget(self.fromComboBox, 1, 0) grid.addWidget(self.fromSpinBox, 1, 1) grid.addWidget(self.toComboBox, 2, 0) grid.addWidget(self.toLabel, 2, 1) self.setLayout(grid) self.connect(self.fromComboBox, SIGNAL("currentIndexChanged(int)"), self.updateUi) self.connect(self.toComboBox, SIGNAL("currentIndexChanged(int)"), self.updateUi) self.connect(self.fromSpinBox, SIGNAL("valueChanged(double)"), self.updateUi) def updateUi(self): to = self.toComboBox.currentText() from_ = self.fromComboBox.currentText() amount = (self.rates[from_] / self.rates[to]) * self.fromSpinBox.value() self.toLabel.setText("%0.2f" % amount) def getdata(self): self.rates = {} try: date = "Unknown" fh = urllib2.urlopen("http://www.bankofcanada.ca/en/markets/csv/exchange_eng.csv") for line in fh: line = line.rstrip() if not line or line.startswith(("#", "Closing")): continue fields = line.split(",") if line.startswith("Date "): date = fields[-1] else: try: value = float(fields[-1]) self.rates[fields[0]] = value except ValueError: pass return "Exchange rates date: " + date except Exception, e: return "Failued to download:\n%s" % e app = QApplication(sys.argv) form = Form() form.show() app.exec_()


I had this error , how to fix them ?  

Code:
C:\Python27\python.exe "C:/Users/denial/PycharmProjects/currency project/alarm.py"
Traceback (most recent call last):
  File "C:/Users/denial/PycharmProjects/currency project/alarm.py", line 2, in <module>
    from PySide.QtCore import *
ImportError: No module named PySide.QtCore

Process finished with exit code 1