geekcamp-calculator 0.0.1.2

基于 ANTLR4 编写的 Python 计算器 DEMO

geekcamp-calculator

基于 ANTLR4 编写的 Python 计算器 DEMO

环境准备

poetry install

poetry run antlr4 -Xexact-output-dir -o calculator/antlr4 -Dlanguage=Python3 calculator/grammar/CalculatorLexer.g4
poetry run antlr4 -Xexact-output-dir -o calculator/antlr4 -listener -visitor -Dlanguage=Python3 calculator/grammar/CalculatorParser.g4 calculator/grammar/CalculatorLexer.g4

单元测试

poetry run pytest -s

本地安装

poetry build -f wheel
pip install -U --user dist/geekcamp_calculator-*-py3-none-any.whl

列出 Python 包文件列表：

pip show geekcamp-calculator -f

终端输出：

Name: geekcamp-calculator
Version: 0.0.1.0
Summary:
Home-page:
Author: FifiLyu
Author-email: [e-mail]
License:
Location: /home/user/.local/lib/python3.11/site-packages
Requires: antlr4-python3-runtime, antlr4-tools, pytest
Required-by:
Files:
  ../../../bin/pycalculator
  __pycache__/gkcalculator.cpython-311.pyc
  calculator/Calculator.py
  calculator/__init__.py
  calculator/__pycache__/Calculator.cpython-311.pyc
  calculator/__pycache__/__init__.cpython-311.pyc
  calculator/__pycache__/common.cpython-311.pyc
  calculator/antlr4/CalculatorLexer.interp
  calculator/antlr4/CalculatorLexer.py
  calculator/antlr4/CalculatorLexer.tokens
  calculator/antlr4/CalculatorParser.interp
  calculator/antlr4/CalculatorParser.py
  calculator/antlr4/CalculatorParser.tokens
  calculator/antlr4/CalculatorParserListener.py
  calculator/antlr4/CalculatorParserVisitor.py
  calculator/antlr4/__pycache__/CalculatorLexer.cpython-311.pyc
  calculator/antlr4/__pycache__/CalculatorParser.cpython-311.pyc
  calculator/antlr4/__pycache__/CalculatorParserListener.cpython-311.pyc
  calculator/antlr4/__pycache__/CalculatorParserVisitor.cpython-311.pyc
  calculator/common.py
  calculator/grammar/CalculatorLexer.g4
  calculator/grammar/CalculatorParser.g4
  calculator/parser/CalculatorBailLexer.py
  calculator/parser/CustomErrorListener.py
  calculator/parser/__init__.py
  calculator/parser/__pycache__/CalculatorBailLexer.cpython-311.pyc
  calculator/parser/__pycache__/CustomErrorListener.cpython-311.pyc
  calculator/parser/__pycache__/__init__.cpython-311.pyc
  geekcamp_calculator-0.0.1.0.dist-info/INSTALLER
  geekcamp_calculator-0.0.1.0.dist-info/LICENSE
  geekcamp_calculator-0.0.1.0.dist-info/METADATA
  geekcamp_calculator-0.0.1.0.dist-info/RECORD
  geekcamp_calculator-0.0.1.0.dist-info/REQUESTED
  geekcamp_calculator-0.0.1.0.dist-info/WHEEL
  geekcamp_calculator-0.0.1.0.dist-info/direct_url.json
  geekcamp_calculator-0.0.1.0.dist-info/entry_points.txt
  gkcalculator.py

使用方法

获取命令行工具执行路径：

python -c "import site; print('%s/bin/pycalculator' % site.USER_BASE)"

终端输出：

~/.local/bin/pycalculator

运行

~/.local/bin/pycalculator

分别输入 1+1==2;、1+1=2;

操作演示：

2023-09-20 00:36:09 94943 [INFO] 未启用日志配置文件，加载默认设置
请输入表达式： 1+1==2;
2023-09-20 00:36:13 94943 [INFO] 语法识别：

    1+1==2;


2023-09-20 00:36:13 94943 [DEBUG] Calculator.Antlr4->语法分析成功