fix: resolve unterminated string error in command execution

README.md

@@ -42,30 +42,21 @@ git clone https://github.com/CodeCrafter-TL/python-cmd.git
 #### 安装必需包
 在 clone 之后的工作目录中执行如下命令:
 ```bash
-pip3 install -r requirements.txt
+pip install -r requirements.txt
 ```
 如果安装较慢，可以使用如下命令切换为阿里云镜像:
 ```bash
-pip3 config set global.index-url https://mirrors.aliyun.com/pypi/simple
+pip config set global.index-url https://mirrors.aliyun.com/pypi/simple
 ```
 等待安装完成后，使用如下命令即可开始使用 Python cmd:
 ```bash
-python3 main.py
+python main.py
 ```
 
 #### 日志说明
 日志存放位于`C:\users\你的用户名\.pcmd`下
 #### Warning!
 - 无法自定义日志位置
-- cd 有部分问题 例子：
-```bash
-cd c:\
-unterminated string literal (detected at line 1); perhaps you escaped the end quote? (<string>, line 1)
-```
-请使用
-```bash
-cd c:\\
-```
 
 ### 文件说明
 

main.py

@@ -117,28 +117,32 @@ def __init__(self, parent=None):
 
     def process_command(self, line_text):
         try:
-            result: list | tuple = line_text.split(' ')
-            command: str = result[0]
-            args: list | tuple = result[1:]
+            result = line_text.split(' ')
+            command = result[0]
+            args = result[1:]
 
             if command in self.COMMANDS:
                 method_name = self.COMMANDS[command]
                 if method_name == "exit":
                     sys.exit()
                 else:
                     try:
-                        processed_args = []
-                        for arg in args:
-                            processed_args.append(f'"{str(arg)}"')
-                        eval(f"self.{method_name}({ \
-                            ', '.join(processed_args)})")
-                    except NameError as e:
+                        method = getattr(self, method_name)
+                        # 直接传递参数列表，无需字符串处理
+                        method(*args)
+                    except AttributeError:
                         self.error([CMD_NOT_FOUND, COLON, command])
                     except TypeError as e:
-                        if re.search(r'takes \d+ positional argument', str(e)):
-                            self.error([command, COLON, LARGE_ARG])
-                        elif re.search(r'missing \d+ required positional argument', str(e)):
-                            self.error([command, COLON, MISS_ARG])
+                        error_msg = str(e)
+                        if "positional argument" in error_msg:
+                            if "missing" in error_msg:
+                                self.error([command, COLON, MISS_ARG])
+                            elif "takes" in error_msg:
+                                self.error([command, COLON, LARGE_ARG])
+                        else:
+                            self.error([str(e)])
+                    except Exception as e:
+                        self.error([str(e)])
             elif self.in_path(command):
                 if os.name == 'nt':
                     executable = 'cmd'
@@ -251,8 +255,7 @@ def help(self):
 ls: 列出目录下的文件和目录 - ls
 = dir
 help: 查看本消息 - help
-日志保存位置在{self.home_directory}\.pcmd\下
-"""
+日志保存位置在{self.home_directory}""" + r"""\.pcmd\下"""
         self.print(info)
 
     def cd(self, dir_name='.'):