BMI_calculator

from tkinter import *
from tkinter import messagebox


BMI_INFO_CONSTANT = 'BMI INFO'


def show_person_BMI(bmi):
    if bmi < 18.5:
        messagebox.showinfo(BMI_INFO_CONSTANT, f'{bmi} you are Underweight')
    elif 18.5 < bmi < 24.9:
        messagebox.showinfo(BMI_INFO_CONSTANT, f'{bmi} you are Normal')
    elif 24.9 < bmi < 29.9:
        messagebox.showinfo(BMI_INFO_CONSTANT, f'{bmi} you are Overweight')
    elif bmi > 29.9:
        messagebox.showinfo(BMI_INFO_CONSTANT, f' {bmi} you are Obesity')
    else:
        messagebox.showerror(BMI_INFO_CONSTANT, 'Something went wrong!')


def calculate_bmi():
    kilograms = int(weight_in_kg.get())
    meters = int(height_in_cm.get()) / 100
    bmi = kilograms / (meters * meters)
    bmi = round(bmi, 1)
    show_person_BMI(bmi)


root = Tk()


var = IntVar()

root.title('PythonGuides')
root.geometry('400x300')
root.config(bg='black')

app_frame = Frame(
    root,
    padx=150,
    pady=150
)
app_frame.pack(expand=True)


gender_label = Label(
    app_frame,
    bg='grey',
    text='Select Gender'
)
gender_label.grid(row=2, column=1)

frame2 = Frame(app_frame)
frame2.grid(row=2, column=2, pady=5)

male_radio = Radiobutton(
    frame2,
    text='Male',
    variable=var,
    value=1
)
male_radio.pack(side=LEFT)

female_radio = Radiobutton(
    frame2,
    text='Female',
    variable=var,
    value=2
)
female_radio.pack(side=RIGHT)

height_label = Label(
    app_frame,
    bg='grey',
    text="Enter Height in CM  "
)
height_label.grid(row=3, column=1)


weight_label = Label(
    app_frame,
    bg='grey',
    text="Enter Weight in KG  ",
)

weight_label.grid(row=4, column=1)


height_in_cm = Entry(app_frame)

height_in_cm.grid(row=3, column=2, pady=5)


weight_in_kg = Entry(
    app_frame,
)
weight_in_kg.grid(row=4, column=2, pady=5)

frame3 = Frame(app_frame)
frame3.grid(row=5, columnspan=3, pady=10)

calculate_BMI_button = Button(
    frame3,
    text='Calculate your BMI',
    command=calculate_bmi
)
calculate_BMI_button.pack(side=LEFT)


root.mainloop()