[投稿] 添加脚本: 一款计算器 — by ENDER

Author: jinwandalaohu66

script_library/scripts/basic/script_mnl0ws3b.py

@@ -0,0 +1,187 @@
+import math
+import sys
+
+class ScientificCalculator:
+    def __init__(self):
+        self.memory = 0
+        self.history = []
+        self.constants = {
+            'pi': math.pi,
+            'e': math.e,
+            'tau': math.tau,
+            'inf': float('inf'),
+            'nan': float('nan')
+        }
+        self.functions = {
+            'sin': math.sin,
+            'cos': math.cos,
+            'tan': math.tan,
+            'asin': math.asin,
+            'acos': math.acos,
+            'atan': math.atan,
+            'sinh': math.sinh,
+            'cosh': math.cosh,
+            'tanh': math.tanh,
+            'log': math.log10,
+            'ln': math.log,
+            'log2': math.log2,
+            'exp': math.exp,
+            'sqrt': math.sqrt,
+            'cbrt': lambda x: x ** (1/3),
+            'abs': abs,
+            'floor': math.floor,
+            'ceil': math.ceil,
+            'round': round,
+            'fact': math.factorial,
+            'gamma': math.gamma,
+            'erf': math.erf
+        }
+    
+    def evaluate(self, expression):
+        """计算表达式"""
+        try:
+            # 替换常量
+            for name, value in self.constants.items():
+                expression = expression.replace(name, str(value))
+            
+            # 安全评估
+            allowed_names = {k: v for k, v in self.functions.items()}
+            allowed_names.update({
+                'pi': math.pi,
+                'e': math.e,
+                'tau': math.tau,
+                'inf': float('inf'),
+                'nan': float('nan')
+            })
+            allowed_names.update({name: getattr(math, name) for name in dir(math) 
+                                  if not name.startswith('_')})
+            
+            result = eval(expression, {"__builtins__": {}}, allowed_names)
+            
+            # 保存到历史
+            self.history.append((expression, result))
+            if len(self.history) > 50:
+                self.history.pop(0)
+            
+            return result
+        except Exception as e:
+            return f"错误: {str(e)}"
+    
+    def show_menu(self):
+        print("\n" + "=" * 60)
+        print("             科学计算器 Scientific Calculator")
+        print("=" * 60)
+        print("支持运算: +, -, *, /, **, //, %")
+        print("数学函数: sin, cos, tan, asin, acos, atan")
+        print("          sinh, cosh, tanh, log, ln, log2")
+        print("          sqrt, cbrt, exp, abs, floor, ceil")
+        print("          fact(阶乘), gamma, erf")
+        print("常量: pi, e, tau")
+        print("=" * 60)
+        print("特殊命令:")
+        print("  m+          - 存入内存")
+        print("  m-          - 从内存减去")
+        print("  mr          - 读取内存")
+        print("  mc          - 清空内存")
+        print("  history     - 查看历史")
+        print("  clear/h     - 清屏")
+        print("  constants   - 查看常量")
+        print("  help/?      - 显示帮助")
+        print("  q/exit      - 退出")
+        print("=" * 60)
+    
+    def show_constants(self):
+        print("\n当前常量:")
+        for name, value in self.constants.items():
+            print(f"  {name} = {value}")
+    
+    def run(self):
+        print("\n科学计算器已启动")
+        print("输入 'help' 查看帮助")
+        
+        while True:
+            try:
+                # 获取输入
+                user_input = input("\n>>> ").strip().lower()
+                
+                if not user_input:
+                    continue
+                
+                # 处理命令
+                if user_input in ['q', 'exit', 'quit']:
+                    print("再见！")
+                    break
+                
+                elif user_input in ['help', '?']:
+                    self.show_menu()
+                
+                elif user_input in ['clear', 'h', 'cls']:
+                    import os
+                    os.system('clear' if os.name == 'posix' else 'cls')
+                
+                elif user_input == 'history':
+                    if not self.history:
+                        print("暂无历史记录")
+                    else:
+                        print("\n历史记录:")
+                        for i, (expr, result) in enumerate(self.history[-10:], 1):
+                            print(f"  {i}. {expr} = {result}")
+                
+                elif user_input == 'constants':
+                    self.show_constants()
+                
+                elif user_input == 'm+':
+                    try:
+                        expr = input("输入要存入内存的表达式: ")
+                        result = self.evaluate(expr)
+                        if isinstance(result, (int, float)):
+                            self.memory += result
+                            print(f"内存 += {result} = {self.memory}")
+                        else:
+                            print(result)
+                    except:
+                        print("无效表达式")
+                
+                elif user_input == 'm-':
+                    try:
+                        expr = input("输入要从内存减去的表达式: ")
+                        result = self.evaluate(expr)
+                        if isinstance(result, (int, float)):
+                            self.memory -= result
+                            print(f"内存 -= {result} = {self.memory}")
+                        else:
+                            print(result)
+                    except:
+                        print("无效表达式")
+                
+                elif user_input == 'mr':
+                    print(f"内存值: {self.memory}")
+                
+                elif user_input == 'mc':
+                    self.memory = 0
+                    print("内存已清空")
+                
+                else:
+                    # 计算表达式
+                    result = self.evaluate(user_input)
+                    if isinstance(result, (int, float)):
+                        # 格式化输出
+                        if isinstance(result, float) and result.is_integer():
+                            result = int(result)
+                        print(f"= {result}")
+                    else:
+                        print(result)
+            
+            except KeyboardInterrupt:
+                print("\n使用 'q' 退出")
+            except Exception as e:
+                print(f"错误: {e}")
+
+
+def main():
+    calc = ScientificCalculator()
+    calc.run()
+
+
+if __name__ == "__main__":
+    main()