python自写软件(二)
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承上博客背景,用了Pyqt5先实现了个简单的计算器,我觉得重要的就是py自带的eval函数吧
什么时候写了播放器或者实现了最近想写的java目录树或者xml解析器我再写吧
思路就是点击按钮就加到string形成算法表达式,再依靠python强大的计算功能。
以后有新的版本再说
from PyQt5.QtWidgets import QLabel, QApplication, QDialog, QGridLayout, QHBoxLayout, QPushButton, QFormLayout, QWidget, QLineEdit import sys from PyQt5.QtCore import Qt from PyQt5.QtGui import QIcon import test class calculator_frame(QDialog): def __init__(self): super().__init__() self.shower = QLineEdit() self.label = QLabel() self.init() self.tmp_string_num = "" self.tmp_num = 0 self.sum_num = "" self.num = 0 def init(self): self.setWindowTitle("个人计算器") self.setWindowIcon(QIcon(‘:/calculator.ico‘)) self.label.setStyleSheet(‘font-size:20px;color:rgb(180,180,180,255);‘) self.shower.setStyleSheet(‘font-size:20px;color:rgb(180,180,180,255);‘) self.shower.setEnabled(False) hbox = QHBoxLayout() form_widget = QWidget() grid_widget = QWidget() form_layout = QFormLayout() form_layout.addRow("memory:", self.shower) form_layout.addRow("result=", self.label) form_widget.setLayout(form_layout) # self.setFixedSize(300,200) grid_layout = QGridLayout() one = QPushButton("1") two = QPushButton("2") three = QPushButton("3") four = QPushButton("4") five = QPushButton("5") six = QPushButton("6") seven = QPushButton("7") eight = QPushButton("8") nine = QPushButton("9") zero = QPushButton("0") point = QPushButton(".") equal = QPushButton("=") add = QPushButton("+") sub = QPushButton("-") mult = QPushButton("*") div = QPushButton("/") one.clicked.connect(self.clicker) two.clicked.connect(self.clicker) three.clicked.connect(self.clicker) four.clicked.connect(self.clicker) five.clicked.connect(self.clicker) six.clicked.connect(self.clicker) seven.clicked.connect(self.clicker) eight.clicked.connect(self.clicker) nine.clicked.connect(self.clicker) zero.clicked.connect(self.clicker) add.clicked.connect(self.clicker) sub.clicked.connect(self.clicker) mult.clicked.connect(self.clicker) div.clicked.connect(self.clicker) equal.clicked.connect(self.clicker) point.clicked.connect(self.clicker) one.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) two.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) three.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) four.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) five.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) six.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) seven.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) eight.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) nine.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) zero.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) point.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) equal.setStyleSheet(‘font-size:32px;color:rgb(0,0,0,255);‘) add.setStyleSheet(‘font-size:28px;color:rgb(0,0,0,255);‘) sub.setStyleSheet(‘font-size:28px;color:rgb(0,0,0,255);‘) mult.setStyleSheet(‘font-size:28px;color:rgb(0,0,0,255);‘) div.setStyleSheet(‘font-size:28px;color:rgb(0,0,0,255);‘) grid_layout.addWidget(add, 2, 4) grid_layout.addWidget(div, 1, 4) grid_layout.addWidget(mult, 0, 4) grid_layout.addWidget(sub, 3, 4) grid_layout.addWidget(zero, 3, 2) grid_layout.addWidget(point, 3, 1) grid_layout.addWidget(equal, 3, 3) grid_layout.addWidget(one, 2, 1) grid_layout.addWidget(two, 2, 2) grid_layout.addWidget(three, 2, 3) grid_layout.addWidget(four, 1, 1) grid_layout.addWidget(five, 1, 2) grid_layout.addWidget(six, 1, 3) grid_layout.addWidget(seven, 0, 1) grid_layout.addWidget(eight, 0, 2) grid_layout.addWidget(nine, 0, 3) grid_widget.setLayout(grid_layout) hbox.addWidget(form_widget, 0, Qt.AlignLeft) hbox.addWidget(grid_widget, 0, Qt.AlignRight) self.setLayout(hbox) def clicker(self): num_or_opt = self.sender().text() if num_or_opt.isdigit(): self.tmp_string_num += str(num_or_opt) self.tmp_num = int(self.tmp_string_num) self.shower.setText(self.tmp_string_num) self.sum_num += self.tmp_string_num print(self.sum_num) self.label.setText(self.sum_num) self.tmp_string_num="" self.tmp_num = 0 else: if not num_or_opt == "=": self.tmp_string_num += num_or_opt self.sum_num += num_or_opt self.shower.setText(self.tmp_string_num) self.tmp_string_num = "" self.tmp_num = 0 else: self.label.setText(str(eval(self.sum_num))) if __name__ == ‘__main__‘: app = QApplication(sys.argv) mainFrame = calculator_frame() mainFrame.show() sys.exit(app.exec_())
一开始没考虑推导式[(x,y) for x,y in xx ]我很后悔,但是写都写了,能用就行,eval很关键,不然破不了这死局
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