#Ex 4.7 from A primer on ...

import sys

value = sys.argv[1]
result = eval(value)

print(result,type(result))


"""
Terminal> python objects_cml.py 3
3 <class 'int'>
Terminal> sundnes$ python objects_cml.py [3,4]
[3, 4] <class 'list'>
Terminal> sundnes$ python objects_cml.py (1,1)
-bash: syntax error near unexpected token `('
Terminal> sundnes$ python objects_cml.py "(1,1)"
(1, 1) <class 'tuple'>
Terminal> sundnes$ python objects_cml.py "'this is a string'"
this is a string <class 'str'>
"""