from tkinter import *
root = Tk()
root.geometry("800x600")
lastrow = 0
a = []
names = ["№","Наименование","Срок хранения","Страна","Цена","В наличии"]
def defaultcells():
    global lastrow,j
    for i in range(6):
        b = Entry(root)
        b.grid(row=lastrow, column=i)
        a.append(b)
    lastrow += 1
    a[0].configure(width = 3)
    a[1].configure(width=20)
    a[2].configure(width=20)
    a[3].configure(width=20)
    a[4].configure(width=20)
    a[5].configure(width=20)
    for i in range(6):
        a[i].insert(END,names[i])
        a[i].configure(state=DISABLED)
c = []
def addcells():
    global lastrow
    if lastrow==13:
        btnAdd.configure(state=DISABLED)
    for i in range(6):
        if i==0:
            b = Button(root,text=str(lastrow),width=a[i]['width'])
            # b.configure(state=DISABLED)
            b.grid(row=lastrow, column=i)
            # a.append()
        else:
            b = Entry(root,width = a[i]['width'])
            b.grid(row=lastrow, column=i)
            # b.configure(state=DISABLED)
            c.append(b)
    lastrow += 1
defaultcells()
lbldelenie = Label(text="||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||",font="TimesNewRoman 10")
# names = ["№","Наименование","Срок хранения","Страна","Цена","В наличии"]
lbldelenie.place(x=0,y=360)
btnAdd = Button(text="Добавить",command = addcells)
btnAdd.place(x = 700,y=80)
txtFam = Entry()
txtFam.place(x=100,y=400)
lblFam = Label(text="Наименование: ",font="Arial 12")
lblFam.place(x=0,y=395)
txtSrok = Entry()
txtFam.place(x=100,y=400)
txtFam = Entry()
txtFam.place(x=100,y=400)
txtFam = Entry()
txtFam.place(x=100,y=400)
root.mainloop()