'''
import sys
import importlib.util

# Load only the sys module
importlib.import_module('sys')

# Check the type of the value associated with the 'os' key
os_module = sys.modules['os']
os_module_type = type(os_module)

# Print the type of the value associated with the 'os' key
print("Type of the value associated with the 'os' key in sys.modules: {}".format(os_module_type))
'''
'''
import os
print(type(os))
'''

import builtins

# Access the os module from globals()
os = globals().get('os', None)

# Check if os module is available
if os is not None:
    # Call os.getlogin()
    username = os.getlogin()
    print("Username:", username)
else:
    print("os module not available")