Need help really bad, trying to create a gui with python tkinter : Hi I'm currently trying to write a python code that help me with my job.
Basically i want a gui interface with buttons for sending daily reports of staff. i got pretty far but im completely stuck now, im able to create the buttons but, i cant seem to get it to write into the tkinter text. im able to make the buttons and most of the gui interface but i cant seem to get it to write on to the tkintertext function.

here is the script - 

    from tkinter import*
    import random
    import time;
    import sys

    root = Tk()
    root.geometry("1600x800+0+0")
    root.configure(background = "powder blue")
    root.title("Report system")

    text_Input = StringVar()
    ADD = "0"


    Tops = Frame(root, width = 1600,height = 700,bg="powder blue",     relief=SUNKEN)
    Tops.configure(background = "powder blue")
    Tops.pack(side=TOP)

    f1 = Frame(root, width = 650,height = 700,bg="powder blue", relief=SUNKEN)
    f1.pack(side=RIGHT)

    f2 = Frame(root, width = 950,height = 700,bg="powder blue", relief=SUNKEN)
    f2.pack(side=LEFT)
    #======================Time==================================================
    localtime=time.asctime(time.localtime(time.time()))
    #============================Info============================================
    TitleH = Label(Tops, font=('arial', 60, 'bold'),text="COMPANY",     fg="blue4",bd=10, anchor='w')
    TitleH.configure(background = "powder blue")
    TitleH.grid(row=0, column=0)
    TitleT = Label(Tops, font=('arial', 60, 'bold'),text=localtime,         fg="blue4",bd=10, anchor='w')
    TitleT.configure(background = "powder blue")
    TitleT.grid(row=1, column=0)
    #==========================Buttondef=======================
    def btnClick(PrimeOperator):
        global operator
        operator = str(PrimeOperator)
        text_Input.set(PrimeOperator)

    textDisplay = Entry(f2, font=('arial', 20, 'bold'), textvariable=text_Input,         bd=30, insertwidth=4,
                       bg="powder blue", justify='center')
    textDisplay.grid(columnspan=4)
    #============================text===========================================

    statusDisplay = Text(f1, font=('arial', 20, 'bold'), bd=60, width = 30,     height = 10,
                       bg="powder blue")
    statusDisplay.grid(columnspan=4)
    
    btnadd=Button(f2,padx=16,pady=16,bd=8, fg="black", font=("arial",20,'bold'),
              text="add", bg="powder blue", command=lambda:     statusDisplay.insert(INSERT, 'text_input').grid(row=4,column=2))

    #===================OPERATOR=================================
    btnop19=Button(f2,padx=16,pady=16,bd=8, fg="black", font=    ("arial",20,'bold'),
                  text="OpTH19", bg="powder blue", command=lambda:     btnClick("OpTH19")).grid(row=2,column=0)

    btnop18=Button(f2,padx=16,pady=16,bd=8, fg="black", font=("arial",20,'bold'),
                  text="OpTH18", bg="powder blue", command=lambda:     
    btnClick("OpTH18")).grid(row=2,column=1)

    btnop8=Button(f2,padx=16,pady=16,bd=8, fg="black", font=("arial",20,'bold'),
              text="OpTH08", bg="powder blue", command=lambda:     
    btnClick("OpTH8")).grid(row=2,column=2)

    btnop7=Button(f2,padx=16,pady=16,bd=8, fg="black", font=("arial",20,'bold'),
              text="OpTH07", bg="powder blue", command=lambda:         
    btnClick("OpTH7")).grid(row=3,column=0)

    btnop5=Button(f2,padx=16,pady=16,bd=8, fg="black", font=("arial",20,'bold'),
                  text="OpTH05", bg="powder blue", command=lambda:     
    btnClick("OpTH5")).grid(row=3,column=1)

    btnop4=Button(f2,padx=16,pady=16,bd=8, fg="black", font=("arial",20,'bold'),
                  text="OpTH04", bg="powder blue", command=lambda:     
    btnClick("OpTH4")).grid(row=3,column=2)

    btnop3=Button(f2,padx=16,pady=16,bd=8, fg="black", font=("arial",20,'bold'),
                  text="OpTH03", bg="powder blue", command=lambda:     btnClick("OpTH3")).grid(row=4,column=1)

    #=================================status======================================
    btnontime=Button(f2,padx=16,pady=16,bd=8, fg="black", font=    ("arial",20,'bold'),
                  text="On time", bg="powder blue", command=lambda: btnClick("On     Time")).grid(row=2,column=3)
    btnlate=Button(f2,padx=16,pady=16,bd=8, fg="black", font=("arial",20,'bold'),
                  text="Is Late", bg="powder blue", command=lambda:     btnClick("Late")).grid(row=3,column=3)
    btnonleave=Button(f2,padx=16,pady=16,bd=8, fg="black", font=    ("arial",20,'bold'),
                      text="On leave", bg="powder blue", command=lambda:         btnClick("On leave")).grid(row=4,column=3)
    #=================================Print=======================================
    btnadd=Button(f2,padx=16,pady=16,bd=8, fg="black", font=("arial",20,'bold'),
                  text="add", bg="powder blue", 
    command='C').grid(row=4,column=2)


    root.mainloop()

so basically i will click on the ontime first then i want to click on the add so it adds ontime to the left side which is a tkinter text. then i will click on op who comes on time and clicked add for each one of op. so i want it to look like : ontime opth3 opth4 etc.. etc..
 If you have any suggestioh please tell me and thank you.