From 752fc921a59959987d536172acaac00e785b6cd6 Mon Sep 17 00:00:00 2001
From: guanjihuan <guanjihuan@163.com>
Date: Wed, 14 Jan 2026 13:20:06 +0800
Subject: [PATCH] 0.1.201

---
 PyPI/setup.cfg                   |  2 +-
 PyPI/src/guan.egg-info/PKG-INFO  |  2 +-
 PyPI/src/guan/basic_functions.py | 21 +++++++++++++++++++++
 3 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/PyPI/setup.cfg b/PyPI/setup.cfg
index f8916ae..26fa1f9 100644
--- a/PyPI/setup.cfg
+++ b/PyPI/setup.cfg
@@ -1,7 +1,7 @@
 [metadata]
 # replace with your username:
 name = guan
-version = 0.1.200
+version = 0.1.201
 author = guanjihuan
 author_email = guanjihuan@163.com
 description = An open source python package
diff --git a/PyPI/src/guan.egg-info/PKG-INFO b/PyPI/src/guan.egg-info/PKG-INFO
index a3ec3d2..f882b48 100644
--- a/PyPI/src/guan.egg-info/PKG-INFO
+++ b/PyPI/src/guan.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 2.4
 Name: guan
-Version: 0.1.200
+Version: 0.1.201
 Summary: An open source python package
 Home-page: https://py.guanjihuan.com
 Author: guanjihuan
diff --git a/PyPI/src/guan/basic_functions.py b/PyPI/src/guan/basic_functions.py
index ce5e404..7bfe86b 100644
--- a/PyPI/src/guan/basic_functions.py
+++ b/PyPI/src/guan/basic_functions.py
@@ -6,6 +6,27 @@ def test():
     current_version = guan.get_current_version('guan')
     print(f'Congratulations on successfully installing Guan package! The installed version is guan-{current_version}.')
 
+# 基本常数
+def fundamental_constants():
+    constants = {}
+    constants['c'] = 2.99792458e8             # 真空光速，单位：m/s（米每秒）
+    constants['h'] = 6.62607015e-34           # 普朗克常数，单位：J·s（焦耳·秒）
+    constants['hbar'] = 1.054571817e-34       # 约化普朗克常数 ħ = h / (2π)，单位：J·s（焦耳·秒）
+    constants['q'] = 1.602176634e-19          # 基本电荷（元电荷），单位：C（库仑）
+    constants['eV'] = 1.602176634e-19         # 1 电子伏特（eV）对应的焦耳值，即 1 eV = q J
+    constants['k'] = 1.380649e-23             # 玻尔兹曼常数，单位：J/K（焦耳每开尔文）
+    constants['NA'] = 6.02214076e23           # 阿伏伽德罗常数，单位：mol⁻¹（每摩尔的粒子数）
+    constants['G'] = 6.67430e-11              # 万有引力常数，单位：m³/(kg·s²)
+    constants['mu0'] = 1.25663706212e-6       # 真空磁导率 μ₀ ≈ 4π × 10⁻⁷，单位：H/m（亨利每米）
+    constants['eps0'] = 8.8541878128e-12      # 真空介电常数 ε₀ = 1 / (μ₀ c²)，单位：F/m（法拉每米）
+    constants['me'] = 9.1093837015e-31        # 电子静止质量，单位：kg（千克）
+    constants['mp'] = 1.67262192595e-27       # 质子静止质量，单位：kg（千克）
+    constants['mn'] = 1.67492749804e-27       # 中子静止质量，单位：kg（千克）
+    constants['alpha'] = 7.2973525693e-3      # 精细结构常数 α = e² / (4π ε₀ ħ c) ≈ 1/137，无量纲
+    constants['a0'] = 5.29177210903e-11       # 玻尔半径，单位：m
+    constants['T0'] = 273.15                  # 标准温度参考点（0°C 对应的开尔文温度偏移），单位：K（开尔文）
+    return constants
+
 # 泡利矩阵
 def sigma_0():
     import numpy as np