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Traceback (most recent call last):
  File "C:\Users\thomas\Desktop\test.py", line 2, in <module>
    from PyQt4.QtGui import *
ImportError: No module named 'PyQt4'

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import sys
from PyQt4.QtGui import *

app = QApplication(sys.argv)
button = QPushButton("Hello World", None)
button.show()
app.exec_()