Python实现LR1文法的完整实例代码

一、使用步骤 1.引入库(安装Python环境、PyQt、PyQt-tools) from PyQt5 import QtCore, QtGui, QtWidgets import sys import datetime from PyQt5.QtGui import QStandardItemModel, QStandardItem from PyQt5.QtWidgets import QHeaderView from collections import defaultdict import numpy as np 2.全局变量 #text = "E -> E + T \nE -