Why can't I package the file with pyinstaller from the command prompt?

Why can"t I package the file with pyinstaller from the command prompt?
Code:

< H1 > SevenDigitsDrawV2.py < / H1 >

import time,turtle
def drawGap ():

turtle.penup()
turtle.fd(5)

def drawLine (draw):

drawGap()
turtle.pendown() if draw else turtle.penup()
turtle.fd(40)
drawGap()
turtle.right(90)

def drawDigit (d):

turtle.hideturtle()
drawLine(True) if d in [2,3,4,5,6,8,9] else drawLine(False)
drawLine(True) if d in [0,1,3,4,5,6,7,8,9] else drawLine(False)
drawLine(True) if d in [0,2,3,5,6,8,9] else drawLine(False)
drawLine(True) if d in [0,2,6,8] else drawLine(False)
turtle.left(90)
drawLine(True) if d in [0,4,5,6,8,9] else drawLine(False)
drawLine(True) if d in [0,2,3,5,6,7,8,9] else drawLine(False)
drawLine(True) if d in [0,1,2,3,4,7,8,9] else drawLine(False)
turtle.left(180)
turtle.penup()
turtle.fd(20)

def drawDate (date):

turtle.pencolor("red")
for i in date:
    if i =="-":
        turtle.write("",font=("Arial",18,"normal"))
        turtle.pencolor("green")
        turtle.fd(40)
    elif i =="=":
        turtle.write("",font=("Arial",18,"normal"))
        turtle.pencolor("blue")
        turtle.fd(40)
    elif i =="+":
        turtle.write("",font=("Arial",18,"normal"))
        turtle.pencolor("yellow")
        turtle.fd(40)
    else:
        drawDigit(eval(i))

def main ():

turtle.setup(800,350,200,200)
turtle.penup()
turtle.fd(-300)
turtle.pensize(5)
drawDate(time.strftime("%Y-%m=%d+",time.localtime()))
turtle.done()

main ()

error: UnicodeDecodeError: "gbk" codec can"t decode byte 0xae in position 162: illegal multibyte sequence
Screenshot:

clipboard.png

Jun.01,2021
There is Chinese in the

code. You add-sharp--coding:utf-8--

to the first line of the code.
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