import struct  
print("len: ", struct.calcsize('i') )     # len:  4  
print("len: ", struct.calcsize('ii'))     # len:  8  
print("len: ", struct.calcsize('f') )     # len:  4  
print("len: ", struct.calcsize('ff'))     # len:  8  
print("len: ", struct.calcsize('s') )     # len:  1  
print("len: ", struct.calcsize('ss'))     # len:  2  
print("len: ", struct.calcsize('d') )     # len:  8  
print("len: ", struct.calcsize('dd'))     # len:  16  
print("len: ", struct.calcsize('H'))
print("len: ", struct.calcsize('LL'))
print("len: ", struct.calcsize('10L'))