int 整数
num = input('请输入数字')
age = int(num)
long 长整数
num = input('请输入数字')
age = long (num)
float 小数
num = input('请输入数字')
age = float (num)
complex 复数
# _*_ coding: utf-8 _*_
birth1 = input('birth:')
birth = int(birth1)
if birth < 2000:
print('00前')
else:
print('00后')
age = input('age:')
age = int(age)
if age >= 18:
print('成年了')
else:
print('未成年')
# 练习 1
print('练习1,输入身高、体重,算BMI指数')
height = input('请输入身高(单位m)')
height = float(height)
weight = input('请输入体重(单位kg)')
weight = float(weight)
BMI = weight/height
if BMI < 18.5:
print('过轻,BMI=',BMI)
elif 18.5<=BMI<25:
print('正常BMI=',BMI)
elif 25<=BMI<28:
pirnt('过重BMI=',BMI)
elif 28<=BMI<32:
pirnt('肥胖BMI=',BMI)
else:
print('严重肥胖,(您该减肥了)BMI=',BMI)