forked from YiHoze/texwrapper
-
Notifications
You must be signed in to change notification settings - Fork 0
/
factorial.py
55 lines (45 loc) · 1.64 KB
/
factorial.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
from math import factorial
from PyQt5.QtWidgets import QWidget, QDesktopWidget, QLabel, QLineEdit, QPushButton, QPlainTextEdit, QGridLayout, QApplication
class factorial_GUI(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.setWindowTitle('Factorial')
self.resize(500, 300)
self.center()
inputLabel = QLabel('Enter an integer')
self.inputEdit = QLineEdit()
clearButton = QPushButton('Clear')
self.result = QPlainTextEdit('0')
self.result.setReadOnly(True)
grid = QGridLayout()
grid.addWidget(inputLabel, 1, 0)
grid.addWidget(self.inputEdit, 1, 1)
grid.addWidget(clearButton, 2, 0)
grid.addWidget(self.result, 2, 1)
self.setLayout(grid)
self.inputEdit.returnPressed.connect(self.onChanged)
clearButton.clicked.connect(self.clear)
self.show()
def onChanged(self):
val = self.inputEdit.text()
try:
r = factorial(int(val))
r = format(r, ',')
self.result.setPlainText(r)
except:
msg = '"%s" is not an integer' %(val)
self.result.setPlainText(msg)
def clear(self):
self.inputEdit.clear()
self.result.clear()
def center(self):
qr = self.frameGeometry()
cp = QDesktopWidget().availableGeometry().center()
qr.moveCenter(cp)
self.move(qr.topLeft())
if __name__ == '__main__':
app = QApplication([])
fac = factorial_GUI()
app.exec_()