Pyqt5实现英文学习词典

运用Python语言编写程序制作英文学习词典，词典有4个基本功能：添加、查询、删除和退出。程序读取源文件路径下的txt格式词典文件，若没有就创建一个。词典文件存储方式为“英文单词 中文单词”，每行仅有一对中英释义。程序会根据用户的选择进入相应的功能模块，并显示相应的操作提示。当添加的单词已存在时，显示“该单词已添加到字典库”；当查询的单词不存在时，显示“字典库中未找到这个单词”；但需要删除某个单词时先查询再删除该单词的全部中英文释义。

一、演示效果

1、整体效果

2、添加：

3、添加相同单词时：

4、查找

5、查找文档中不存在时

5、删除

二、源码

PyCharm + Python3 + PyQt5

1、工程结构

2、PyQt5设计UI源码

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'dic_UI.ui'
#
# Created by: PyQt5 UI code generator 5.11.3
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
  def setupUi(self, MainWindow):
    MainWindow.setObjectName("MainWindow")
    MainWindow.resize(672, 634)
    MainWindow.setStyleSheet("background-color: rgb(0, 0, 255);")
    self.centralwidget = QtWidgets.QWidget(MainWindow)
    self.centralwidget.setObjectName("centralwidget")
    self.verticalLayout = QtWidgets.QVBoxLayout(self.centralwidget)
    self.verticalLayout.setObjectName("verticalLayout")
    self.gridLayout_4 = QtWidgets.QGridLayout()
    self.gridLayout_4.setObjectName("gridLayout_4")
    self.groupBox = QtWidgets.QGroupBox(self.centralwidget)
    font = QtGui.QFont()
    font.setPointSize(20)
    self.groupBox.setFont(font)
    self.groupBox.setStyleSheet("color: rgb(255, 255, 255);")
    self.groupBox.setObjectName("groupBox")
    self.widget = QtWidgets.QWidget(self.groupBox)
    self.widget.setGeometry(QtCore.QRect(20, 40, 601, 131))
    self.widget.setObjectName("widget")
    self.gridLayout = QtWidgets.QGridLayout(self.widget)
    self.gridLayout.setContentsMargins(0, 0, 0, 0)
    self.gridLayout.setObjectName("gridLayout")
    self.label_2 = QtWidgets.QLabel(self.widget)
    font = QtGui.QFont()
    font.setPointSize(20)
    self.label_2.setFont(font)
    self.label_2.setObjectName("label_2")
    self.gridLayout.addWidget(self.label_2, 0, 0, 1, 1)
    self.lineEdit_English = QtWidgets.QLineEdit(self.widget)
    font = QtGui.QFont()
    font.setPointSize(20)
    self.lineEdit_English.setFont(font)
    self.lineEdit_English.setStyleSheet("background-color: rgb(255, 255, 255);\n"
"color: rgb(0, 0, 0);")
    self.lineEdit_English.setText("")
    self.lineEdit_English.setObjectName("lineEdit_English")
    self.gridLayout.addWidget(self.lineEdit_English, 0, 1, 1, 1)
    self.pushButton_add = QtWidgets.QPushButton(self.widget)
    font = QtGui.QFont()
    font.setPointSize(16)
    self.pushButton_add.setFont(font)
    self.pushButton_add.setObjectName("pushButton_add")
    self.gridLayout.addWidget(self.pushButton_add, 0, 2, 1, 1)
    self.label_3 = QtWidgets.QLabel(self.widget)
    font = QtGui.QFont()
    font.setPointSize(20)
    self.label_3.setFont(font)
    self.label_3.setObjectName("label_3")
    self.gridLayout.addWidget(self.label_3, 1, 0, 1, 1)
    self.lineEdit_chinese = QtWidgets.QLineEdit(self.widget)
    font = QtGui.QFont()
    font.setPointSize(20)
    self.lineEdit_chinese.setFont(font)
    self.lineEdit_chinese.setStyleSheet("background-color: rgb(255, 255, 255);\n"
"color: rgb(0, 0, 0);")
    self.lineEdit_chinese.setObjectName("lineEdit_chinese")
    self.gridLayout.addWidget(self.lineEdit_chinese, 1, 1, 1, 1)
    self.pushButton_reset = QtWidgets.QPushButton(self.widget)
    font = QtGui.QFont()
    font.setPointSize(16)
    self.pushButton_reset.setFont(font)
    self.pushButton_reset.setObjectName("pushButton_reset")
    self.gridLayout.addWidget(self.pushButton_reset, 1, 2, 1, 1)
    self.gridLayout_4.addWidget(self.groupBox, 0, 0, 1, 1)
    self.groupBox_2 = QtWidgets.QGroupBox(self.centralwidget)
    font = QtGui.QFont()
    font.setPointSize(20)
    self.groupBox_2.setFont(font)
    self.groupBox_2.setStyleSheet("color: rgb(255, 255, 255);")
    self.groupBox_2.setObjectName("groupBox_2")
    self.widget1 = QtWidgets.QWidget(self.groupBox_2)
    self.widget1.setGeometry(QtCore.QRect(40, 40, 561, 131))
    self.widget1.setObjectName("widget1")
    self.gridLayout_2 = QtWidgets.QGridLayout(self.widget1)
    self.gridLayout_2.setContentsMargins(0, 0, 0, 0)
    self.gridLayout_2.setObjectName("gridLayout_2")
    self.label_4 = QtWidgets.QLabel(self.widget1)
    font = QtGui.QFont()
    font.setPointSize(20)
    self.label_4.setFont(font)
    self.label_4.setObjectName("label_4")
    self.gridLayout_2.addWidget(self.label_4, 0, 0, 1, 1)
    self.lineEdit_find = QtWidgets.QLineEdit(self.widget1)
    font = QtGui.QFont()
    font.setPointSize(20)
    self.lineEdit_find.setFont(font)
    self.lineEdit_find.setStyleSheet("background-color: rgb(255, 255, 255);\n"
"color: rgb(0, 0, 0);")
    self.lineEdit_find.setText("")
    self.lineEdit_find.setObjectName("lineEdit_find")
    self.gridLayout_2.addWidget(self.lineEdit_find, 0, 1, 1, 1)
    self.pushButton_find = QtWidgets.QPushButton(self.widget1)
    font = QtGui.QFont()
    font.setPointSize(16)
    self.pushButton_find.setFont(font)
    self.pushButton_find.setObjectName("pushButton_find")
    self.gridLayout_2.addWidget(self.pushButton_find, 0, 2, 1, 1)
    self.groupBox_4 = QtWidgets.QGroupBox(self.widget1)
    self.groupBox_4.setTitle("")
    self.groupBox_4.setObjectName("groupBox_4")
    self.label_result = QtWidgets.QLabel(self.groupBox_4)
    self.label_result.setGeometry(QtCore.QRect(20, 10, 501, 51))
    font = QtGui.QFont()
    font.setPointSize(20)
    self.label_result.setFont(font)
    self.label_result.setText("")
    self.label_result.setAlignment(QtCore.Qt.AlignCenter)
    self.label_result.setObjectName("label_result")
    self.gridLayout_2.addWidget(self.groupBox_4, 1, 0, 1, 3)
    self.gridLayout_4.addWidget(self.groupBox_2, 1, 0, 1, 1)
    self.groupBox_3 = QtWidgets.QGroupBox(self.centralwidget)
    font = QtGui.QFont()
    font.setPointSize(20)
    self.groupBox_3.setFont(font)
    self.groupBox_3.setStyleSheet("color: rgb(255, 255, 255);")
    self.groupBox_3.setObjectName("groupBox_3")
    self.label_del = QtWidgets.QLabel(self.groupBox_3)
    self.label_del.setGeometry(QtCore.QRect(40, 120, 561, 51))
    font = QtGui.QFont()
    font.setPointSize(20)
    self.label_del.setFont(font)
    self.label_del.setText("")
    self.label_del.setAlignment(QtCore.Qt.AlignCenter)
    self.label_del.setObjectName("label_del")
    self.widget2 = QtWidgets.QWidget(self.groupBox_3)
    self.widget2.setGeometry(QtCore.QRect(40, 40, 561, 61))
    self.widget2.setObjectName("widget2")
    self.gridLayout_3 = QtWidgets.QGridLayout(self.widget2)
    self.gridLayout_3.setContentsMargins(0, 0, 0, 0)
    self.gridLayout_3.setObjectName("gridLayout_3")
    self.label_6 = QtWidgets.QLabel(self.widget2)
    font = QtGui.QFont()
    font.setPointSize(20)
    self.label_6.setFont(font)
    self.label_6.setObjectName("label_6")
    self.gridLayout_3.addWidget(self.label_6, 0, 0, 1, 1)
    self.lineEdit_del = QtWidgets.QLineEdit(self.widget2)
    font = QtGui.QFont()
    font.setPointSize(20)
    self.lineEdit_del.setFont(font)
    self.lineEdit_del.setStyleSheet("background-color: rgb(255, 255, 255);\n"
"color: rgb(0, 0, 0);")
    self.lineEdit_del.setText("")
    self.lineEdit_del.setObjectName("lineEdit_del")
    self.gridLayout_3.addWidget(self.lineEdit_del, 0, 1, 1, 1)
    self.pushButton_del = QtWidgets.QPushButton(self.widget2)
    font = QtGui.QFont()
    font.setPointSize(16)
    self.pushButton_del.setFont(font)
    self.pushButton_del.setObjectName("pushButton_del")
    self.gridLayout_3.addWidget(self.pushButton_del, 0, 2, 1, 1)
    self.gridLayout_4.addWidget(self.groupBox_3, 2, 0, 1, 1)
    self.verticalLayout.addLayout(self.gridLayout_4)
    MainWindow.setCentralWidget(self.centralwidget)
    self.menubar = QtWidgets.QMenuBar(MainWindow)
    self.menubar.setGeometry(QtCore.QRect(0, 0, 672, 26))
    self.menubar.setObjectName("menubar")
    MainWindow.setMenuBar(self.menubar)
    self.statusbar = QtWidgets.QStatusBar(MainWindow)
    self.statusbar.setObjectName("statusbar")
    MainWindow.setStatusBar(self.statusbar)

    self.retranslateUi(MainWindow)
    QtCore.QMetaObject.connectSlotsByName(MainWindow)

  def retranslateUi(self, MainWindow):
    _translate = QtCore.QCoreApplication.translate
    MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
    self.groupBox.setTitle(_translate("MainWindow", "添加词典"))
    self.label_2.setText(_translate("MainWindow", "英文："))
    self.pushButton_add.setText(_translate("MainWindow", "添加"))
    self.label_3.setText(_translate("MainWindow", "中文："))
    self.pushButton_reset.setText(_translate("MainWindow", "重置"))
    self.groupBox_2.setTitle(_translate("MainWindow", "查找词典"))
    self.label_4.setText(_translate("MainWindow", "英文："))
    self.pushButton_find.setText(_translate("MainWindow", "查找"))
    self.groupBox_3.setTitle(_translate("MainWindow", "删除词典"))
    self.label_6.setText(_translate("MainWindow", "英文："))
    self.pushButton_del.setText(_translate("MainWindow", "删除"))

3、后台源码

from PyQt5.QtWidgets import *
class DIC:
  def __init__(self, ui, mainWnd):
    self.ui = ui
    self.mainWnd = mainWnd
    self.mainWnd.setWindowTitle('英文学习词典 作者：申俊')
    self.ui.pushButton_add.clicked.connect(self.add)
    self.ui.pushButton_reset.clicked.connect(self.reset)
    self.ui.pushButton_find.clicked.connect(self.find)
    self.ui.pushButton_del.clicked.connect(self.delate)

  def add(self):
    yinwen = self.ui.lineEdit_English.text()
    zhongwen = self.ui.lineEdit_chinese.text()
    print("添加:", yinwen, zhongwen)
    flag = 0
    dic = {}
    try:
      f = open("2016117249.txt", 'r')
    except FileNotFoundError:
      open("2016117249.txt", mode='w', encoding='utf-8')
      f = open("2016117249.txt", 'r')
    for line in f.readlines():
      line = line.replace("\n", "")
      line = list(line.split(","))
      key = line[0]
      coment = line[1:]
      dic[key] = coment
      if yinwen in dic.keys():
        f.close()
        flag = 1
        self.ui.label_result.setText("该单词已添加到字典库！")
        break
      else:
        f.close()
    if flag != 1:
      fw = open("2016117249.txt", 'a')
      try:
        fw.write(yinwen + ',' + zhongwen + '\n')
        self.ui.label_result.setText("添加成功!")
      except:
        self.ui.label_result.setText("添加失败!")
      fw.close()

  def reset(self):
    self.ui.lineEdit_chinese.clear()
    self.ui.lineEdit_English.clear()
    self.ui.label_result.setText("")

  def find(self):
    w = self.ui.lineEdit_find.text()
    fr = open("2016117249.txt", 'r')
    dic = {}
    for line in fr.readlines():
      line = line.replace("\n", "") # 去除每一行末尾的换行符
      line = list(line.split(",")) # 将每行的英文与各个汉语意思分隔开，生成一个列表
      key = line[0] # 将每行开头的英文设置为键
      coment = line[1:] # 将1往后位置的所有汉语意思设置为值
      dic[key] = coment # 设置字典
    if w in dic.keys(): # 如果输入的单词存在，则对其键值打印
      self.ui.label_result.setText("翻译结果：" + str(dic[w]))
    else:
      self.ui.label_result.setText("字典库中未找到这个单词")
    fr.close()

  def delate(self):
    reply = QMessageBox.question(self.mainWnd, 'Message', '确认删除',
                   QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
    if reply == QMessageBox.Yes:
      word = self.ui.lineEdit_del.text()
      lines = [l for l in open("2016117249.txt", "r") if l.find(word, 0, len(word)) != 0]
      fd = open("2016117249.txt", "w")
      try:
        fd.writelines(lines)
        self.ui.label_del.setText(word + "已经被删除")
      except:
        self.ui.label_del.setText(word + "删除失败")
      fd.close()

4、主程序

import sys
from dic_UI import Ui_MainWindow
from PyQt5.QtWidgets import *
from dictionary import DIC
if __name__ == '__main__':
  app = QApplication(sys.argv)
  mainWnd = QMainWindow()
  ui = Ui_MainWindow()
  # 可以理解成将创建的 ui 绑定到新建的 mainWnd 上
  ui.setupUi(mainWnd)
  display = DIC(ui, mainWnd)
  mainWnd.show()
  sys.exit(app.exec_())

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。