bmi计算器操作 (bmi计算器代码)
BMI计算器执行效果
代码如下：
import tkinter as tk
# 创建一个窗口
window = tk.Tk()
# 设置窗口标题、尺寸
window.title('BMI计算器')
window.geometry('400x400')
# 定义4个变量(对应4个输入框)
var1 = tk.StringVar()
var2 = tk.StringVar()
Bmi1 = tk.StringVar()
Bmi2 = tk.StringVar()
# 创建Lable："身高"
label_height = tk.Label(window,text='身高',font=('隶书',20))
label_height.place(x=10,y=15,width=80,height=40)
# 创建身高的输入框:
entry_height = tk.Entry(window,textvariable=var1,font = ('隶书',20))
entry_height.place(x=90,y=15,width=80,height =40)
# 创建Lable:身高单位cm
label_cm = tk.Label(window,text='cm',font = ('隶书',20))
label_cm.place(x=170,y=15,width = 40,height=40)
# 创建Lable："体重"
label_weight = tk.Label(window,text ='体重',font=('隶书',20))
label_weight.place(x=10,y=65,width=80,height=40)
# 创建体重的输入框
entry_weight = tk.Entry(window,textvariable=var2,font=('隶书',20))
entry_weight.place(x=90,y=65,width = 80,height=40)
# 创建Lable:体重单位kg
label_kg = tk.Label(window,text ='kg',font=('隶书',20))
label_kg.place(x=170,y=65,width=40,height=40)
def bmi():
# 公式 BMI=kg/(cm*cm)
bmi_set = round(float(entry_weight.get())/(float(entry_height.get())*float(entry_height.get()))*10000,2)
if bmi_set >=30:
result = (bmi_set)
abc = ('重度肥胖')
elif bmi_set >=28:
result = (bmi_set)
abc = ('肥胖')
elif bmi_set >= 24:
result = (bmi_set)
abc = ('超重')
elif bmi_set >= 18.5:
result = (bmi_set)
abc = ('正常')
else:
result = (bmi_set)
abc = ('偏瘦')
Bmi1.set('您的BMI值为：%s'%result)
Bmi2.set(abc)
# 创建Button按钮，计算
button_bmi = tk.Button(window,text = '计算BMI',font = ('隶书',20),command = bmi)
button_bmi.place(x = 50,y = 125,width = 300,height = 40)
# 创建计算结果的显示框
entry_bmi1=tk.Entry(window,textvariable = Bmi1,font=('隶书',20))
entry_bmi1.place(x = 30,y = 185,width = 340,height = 50)
entry_bmi2=tk.Entry(window,textvariable = Bmi2,font=('隶书',20))
entry_bmi2.place(x = 30,y = 235,width = 340,height = 50)
# 小提示label
label_kg = tk.Label(window,text ='18.5 < BMI <=24 为正常',font=('宋体',12))
label_kg.place(x=50,y=300,width=250,height=40)
# 循环
tk.mainloop()
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