age =3ifage >=18:print('your age is', age)print('adult')else:print('your age is', age)print('teenager')

age =3ifage >=18:

print('adult')elifage >=6:

print('teenager')else:

print('kid')

>>> height = 1.75

>>> weight = 80.5

>>> tmp =? (weight/height)*(weight/height)

>>> if tmp < 18.5:

...? ? print('低于18.5：過輕')

... elif 18.5 < tmp < 25:

...? ? print('18.5-25：正常')

... elif 25 < tmp < 28:

...? ? print('18.5-25：正常')

... elif 28 < tmp < 32:

...? ? print('28-32：肥胖')

... elif 28 > 32:

...? ? print('高于32：嚴重肥胖')

... else :

...? ? print('未知')

...

未知