python条件判断语法

if判断

age = 50
if age >= 19:
    print('your age is', age)
    print('lt')

if else条件判断

age = 9
if age >= 20:
    print('your age is', age)
    print('lt')
else:
    print('your age is', age)
    print('lx')

if elseif 条件判断

age = 3
if age >= 18:
    print('adult')
elif age >= 6:
    print(‘123’)
else:
    print('kid')