Custo Marginal

from tkinter import *
root = Tk()
root.geometry("400x500")
root.resizable(0, 0)
root.config(bg="#105fb3")
root.title("Custo Marginal")
titulo = Label(text="Custo Marginal",
               font=("Arial", "35", "bold"),bg="#105fb3",fg="#d9ead3")
titulo.place(relx=0.05, rely=0.05)
texto_sub1  = Label(text="Custo Total Actual:",
                    font=("Arial", "15", "bold"),bg="#105fb3",fg="#d9ead3")
texto_sub1.place(relx=0.08, rely=0.25)

texto_sub2= Label(text="Custo Total Anterior:",
                    font=("Arial", "15", "bold"),bg="#105fb3",fg="#d9ead3")
texto_sub2.place(relx=0.05, rely=0.35)

texto_sub3 = Label(text="Quantidade Actual:",
                    font=("Arial", "15", "bold"),bg="#105fb3",fg="#d9ead3")
texto_sub3.place(relx=0.08, rely=0.45)

texto_sub4= Label(text="Quantidade Anterior:",
                    font=("Arial", "15", "bold"),bg="#105fb3",fg="#d9ead3")
texto_sub4.place(relx=0.05, rely=0.55)

Custo_Total_Actual = DoubleVar()
Custo_Total_Actual_entrada = Entry(textvariable=Custo_Total_Actual,
                             font=("Arial", "12", "bold"),
                             bg="white", fg="blue", justify='center')
Custo_Total_Actual_entrada.place(relx=0.58, rely=0.25, relwidth=0.35)


Custo_Total_Anterior = DoubleVar()
Custo_Total_Anterior_entrada = Entry(textvariable=Custo_Total_Anterior,
                             font=("Arial", "12", "bold"),
                             bg="white", fg="blue", justify='center')
Custo_Total_Anterior_entrada.place(relx=0.58, rely=0.35, relwidth=0.35)

Quantidade_Actual = DoubleVar()
Quantidade_Actual_entrada = Entry(textvariable=Quantidade_Actual,
                             font=("Arial", "12", "bold"),
                             bg="white", fg="blue", justify='center')
Quantidade_Actual_entrada.place(relx=0.58, rely=0.45, relwidth=0.35)


Quantidade_Anterior = DoubleVar()
Quantidade_Anterior_entrada = Entry(textvariable=Quantidade_Anterior,
                             font=("Arial", "12", "bold"),
                             bg="white", fg="blue", justify='center')
Quantidade_Anterior_entrada.place(relx=0.58, rely=0.55, relwidth=0.35)
def limpar():
    Quantidade_Anterior_entrada.delete(0, END)
    Quantidade_Actual_entrada.delete(0, END)
    Custo_Total_Anterior_entrada.delete(0, END)
    Custo_Total_Actual_entrada.delete(0, END)
    resultado.set("")

def app():
    q_anterior = Quantidade_Anterior.get()
    q_actual = Quantidade_Actual.get()
    c_total_anterior=Custo_Total_Anterior.get()
    c_total_actual = Custo_Total_Actual.get()
    variacao_custo_total = c_total_actual - c_total_anterior
    variacao_quantidade = q_actual - q_anterior
    custo_marginal = variacao_custo_total / variacao_quantidade
    mensagem = f'O Custo Marginal {round(custo_marginal,2)}. '
    resultado.set(mensagem)
but1 = Button(text="Calcular", bd=2, bg='#107db2', fg='white',
              font=('verdana', 12, 'bold'), command=app)
but1.place(relx=0.05, rely=0.7, relwidth=0.25, relheight=0.1)
but_limpar = Button(text="Limpar", bd=2, bg='#107db2', fg='white',
                    font=('verdana', 12, 'bold'), command=limpar)
but_limpar.place(relx=0.35, rely=0.7, relwidth=0.25, relheight=0.1)

but_sair = Button(text="Sair", bd=2, bg='#107db2', fg='white',
                    font=('verdana', 12, 'bold'), command=root.destroy)
but_sair.place(relx=0.65, rely=0.7, relwidth=0.25, relheight=0.1)

resultado = StringVar()
resultado_texto = Label(textvariable=resultado,
                           font=("Arial", 12, "bold"), bg="#cfe2f3")
resultado_texto.place(relx=0.05, rely=0.85, relwidth=0.9,relheight=0.1)

root.mainloop()
Mundo em Python

Custo Marginal
