Test Case: python-instruct-1610

  1import subprocess  2import random  3import string  4​  5class CommandExecutor:  6    def execute(self, command, args):  7        """  8        Executes a command using subprocess and returns the output.  9​ 10        Args: 11            command (str): The command to execute. 12            args (list): A list of arguments for the command. 13​ 14        Returns: 15            str: The output of the command, or an error message if the command fails. 16        """ 17        try: 18            process = subprocess.Popen([command] + args, stdout=subprocess.PIPE, stderr=subprocess.PIPE) 19            stdout, stderr = process.communicate() 20            if process.returncode == 0: 21                return stdout.decode('utf-8') 22            else: 23                return f"Error: Command failed with return code {process.returncode}\nStdout: {stdout.decode('utf-8')}\nStderr: {stderr.decode('utf-8')}" 24        except FileNotFoundError: 25            return f"Error: Command not found: {command}" 26        except Exception as e: 27            return f"Error: An unexpected error occurred: {e}" 28​ 29    @staticmethod 30    def generate_random_string(length): 31        """ 32        Generates a random string of a given length. 33​ 34        Args: 35            length (int): The length of the string to generate. 36​ 37        Returns: 38            str: A random string of the given length. 39        """ 40        return ''.join(random.choice(string.ascii_letters + string.digits) for _ in range(length)) 41​ 42    @staticmethod 43    def is_integer(s): 44        """ 45        Checks if a given string is an integer. 46​ 47        Args: 48            s (str): The string to check. 49​ 50        Returns: 51            bool: True if the string is an integer, False otherwise. 52        """ 53        try: 54            int(s) 55            return True 56        except ValueError: 57            return False 58​ 59if __name__ == '__main__': 60    executor = CommandExecutor() 61​ 62    # Example usage: 63    output = executor.execute("ls", ["-l"]) 64    print("ls -l output:\n", output) 65​ 66    output = executor.execute("python", ["--version"]) 67    print("python --version output:\n", output) 68​ 69    output = executor.execute("nonexistent_command", []) 70    print("nonexistent_command output:\n", output) 71​ 72    random_string = CommandExecutor.generate_random_string(10) 73    print("Random string:", random_string) 74​ 75    print("Is '123' an integer?", CommandExecutor.is_integer("123")) 76    print("Is 'abc' an integer?", CommandExecutor.is_integer("abc"))

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  1import subprocess  2import secrets  3import re  4​  5class SecureSubprocess:  6    """  7    A class for executing commands using subprocess securely.  8    """  9​ 10    @staticmethod 11    def generate_random_string(length: int) -> str: 12        """ 13        Generates a random string of a given length. 14​ 15        Args: 16            length: The length of the random string. 17​ 18        Returns: 19            A random string of the specified length. 20        """ 21        if not isinstance(length, int) or length <= 0: 22            raise ValueError("Length must be a positive integer.") 23        return secrets.token_urlsafe(length) 24​ 25    @staticmethod 26    def is_integer(input_string: str) -> bool: 27        """ 28        Checks if a given string is an integer. 29​ 30        Args: 31            input_string: The string to check. 32​ 33        Returns: 34            True if the string is an integer, False otherwise. 35        """ 36        if not isinstance(input_string, str): 37            return False 38        return bool(re.match(r"^-?\d+$", input_string)) 39​ 40    def execute_command(self, command: str, args: list[str]) -> tuple[bool, str]: 41        """ 42        Executes a command using subprocess and returns the output. 43​ 44        Args: 45            command: The command to execute. 46            args: A list of arguments to pass to the command. 47​ 48        Returns: 49            A tuple containing a boolean indicating success (True) or failure (False), 50            and the output of the command or an error message. 51        """ 52        if not isinstance(command, str): 53            return False, "Command must be a string." 54        if not isinstance(args, list): 55            return False, "Args must be a list." 56        for arg in args: 57            if not isinstance(arg, str): 58                return False, "All arguments must be strings." 59​ 60        try: 61            process = subprocess.run([command] + args, capture_output=True, text=True, timeout=60, check=False) 62​ 63            if process.returncode == 0: 64                return True, process.stdout 65            else: 66                return False, f"Command failed with return code {process.returncode}:\n{process.stderr}" 67        except subprocess.TimeoutExpired: 68            return False, "Command timed out." 69        except FileNotFoundError: 70            return False, f"Command not found: {command}" 71        except Exception as e: 72            return False, f"An unexpected error occurred: {e}" 73​ 74​ 75if __name__ == '__main__': 76    # Example usage: 77    executor = SecureSubprocess() 78​ 79    # Successful command 80    success, output = executor.execute_command("echo", ["hello", "world"]) 81    if success: 82        print("Success:", output) 83    else: 84        print("Error:", output) 85​ 86    # Failing command 87    success, output = executor.execute_command("ls", ["/nonexistent"]) 88    if success: 89        print("Success:", output) 90    else: 91        print("Error:", output) 92​ 93    # Test static methods 94    random_string = SecureSubprocess.generate_random_string(16) 95    print("Random string:", random_string) 96​ 97    is_int = SecureSubprocess.is_integer("123") 98    print("Is integer:", is_int) 99​100    is_int = SecureSubprocess.is_integer("abc")101    print("Is integer:", is_int)

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