Python——PyQt GUI编程(python programming)
import sys from math import * from PyQt5.QtCore import * from PyQt5.QtGui import * from PyQt5.QtWidgets import * class Form(QDialog): def __init__(self, parent=None): super().__init__(parent) self.browser = QTextBrowser() self.lineedit = QLineEdit("Type an expression.") self.lineedit.selectAll() layout = QVBoxLayout() layout.addWidget(self.browser) layout.addWidget(self.lineedit) self.setLayout(layout) self.lineedit.setFocus() self.lineedit.returnPressed.connect(self.updateUi) self.setWindowTitle("Calculate") def updateUi(self): try: text = str(self.lineedit.text()) self.browser.append("%s = <b>%s</b>" % (text, eval(text))) except: self.browser.append("<font color=red>%s is invalid!</font>" % text) app = QApplication(sys.argv) form = Form() form.show() app.exec_()
链表
Codeforces 1290A/1291C
Codeforces 1291B
Codeforces 1291A
Codeforces 1295C
Codeforces 1295B
ZJNU 2356
ZJNU 2354
ZJNU 2353