# imperial --> metric
# 1 lb = 0.45359237 kg
# 1 ft = 0.3048 m
# 1 in = 2.54 cm = 0.0254 m

def function(param1):
      return param1 * 0.45359237	        # conversie lb in kg

print(function(1))
# rezultat: 0.45359237

def function(param1, param2):
       return param1 * 0.3048 + param2 * 0.0254	# conversie ft in m

print(function(1, 1))
# rezultat: 0.3302

def function(param1, param2 = 0.0):
      return param1 * 0.3048 + param2 * 0.0254	# conversie ft in m

print(function(6))				# 6 feet si 0 inch
# rezultat: 1.8288000000000002