linux的文件异常处理

try:
    with open('non_existent_file.txt', 'r') as file:
        content = file.read()
except FileNotFoundError as e:
    print(f"Error: {e}")

try:
    with open('/root/protected_file.txt', 'r') as file:
        content = file.read()
except PermissionError as e:
    print(f"Error: {e}. You might need to run the program with higher privileges.")

try:
    with open('very_large_file.txt', 'w') as file:
        file.write('a' * (10**10))  # 尝试写入一个非常大的文件
except OSError as e:
    print(f"OS Error: {e}. Check disk space or file lock status.")

def read_file(file_path):
    try:
        with open(file_path, 'r') as file:
            return file.read()
    except FileNotFoundError:
        print(f"The file at {file_path} was not found.")
    except PermissionError:
        print(f"Permission denied when trying to read {file_path}.")
    except OSError as e:
        print(f"An OS error occurred: {e}")
    return None

content = read_file('example.txt')
if content:
    print(content)