What i the miing line of code to have the following output?

Output: Pat Jone PJ23

cla choleterol:
lowDenity = 0
highDenity = 0

cla patient:
def __init__(elf, firtName,latName,idNum):
elf. FirtName = firtName
elf. LatName = latName
elf. IdNum = idNum

def __tr__(elf):
return elf. FirtName " " elf. LatName " " elf. IdNum

BLANK

print(patientA)