[Tutor] Regex not working as desired

[Roger Lea Scherer]

  The first step is to input data and then I want to check to make sure
there are only digits and no other type of characters. I thought regex
would be great for this. The program works great, but no matter what I
enter, the regex part does the same thing. By same thing I mean this:

======== RESTART: C:\Users\Roger\Documents\GitHub\ciphers\cipher1.py
========
Please enter an integer less than 10,000 greater than 0:  4jkk33
No match
>>>
======== RESTART: C:\Users\Roger\Documents\GitHub\ciphers\cipher1.py
========
Please enter an integer less than 10,000 greater than 0:  4k33
No match
>>>
======== RESTART: C:\Users\Roger\Documents\GitHub\ciphers\cipher1.py
========
Please enter an integer less than 10,000 greater than 0:  4jjk4
No match
>>>
======== RESTART: C:\Users\Roger\Documents\GitHub\ciphers\cipher1.py
========
Please enter an integer less than 10,000 greater than 0:  4334
No match

So I don't know what I'm doing wrong. The cipher will still draw, but I
want to return an "error message" in this case print("No match"), but it
does it every time, even when there are only digits; that's not what I
want. Please help. Below is my code:

from turtle import *
import re

# use turtle to draw ciphers of the Cistercian monks

digits = input("Please enter an integer less than 10,000 greater than 0:  ")

""" ensure input is no other characters than digits
sudocode: if the input has anything other than digits
 return digits  """

#def digit_check(digits):
# I thought making it a function might h
p = re.compile(r'[^\D]')
m = p.match(digits)
if m:
    print("No match")
else:
    print(digits)
    digits = m

#digit_check(digits)

mode("logo")   # resets turtle heading to north
speed(0)
ht()
fd(100)

# if statements for the ones position
if digits[-1] == "1":
    pu()
    goto(0, 100)
    seth(90)
    pd()
    fd(35)

if digits[-1] == "2":
    pu()
    goto(0, 65)
    seth(90)
    pd()
    fd(35)

if digits[-1] == "3":
    pu()
    goto(0, 100)
    seth(135)
    pd()
    fd(50)

if digits[-1] == "4":
    pu()
    goto(0, 65)
    seth(45)
    pd()
    fd(50)

if digits[-1] == "5":
    pu()
    goto(0, 100)
    seth(90)
    pd()
    fd(35)
    rt(135)
    fd(50)

if digits[-1] == "6":
    pu()
    goto(30, 100)
    seth(180)
    pd()
    fd(35)

if digits[-1] == "7":
    pu()
    goto(0, 100)
    seth(90)
    pd()
    fd(35)
    rt(90)
    fd(35)

if digits[-1] == "8":
    pu()
    goto(0, 65)
    seth(90)
    pd()
    fd(35)
    lt(90)
    fd(35)

if digits[-1] == "9":
    pu()
    goto(0, 100)
    seth(90)
    pd()
    fd(35)
    rt(90)
    fd(35)
    rt(90)
    fd(35)

# if statements for the tens position
if digits[-2:-1] == "1":
    pu()
    goto(0, 100)
    seth(-90)
    pd()
    fd(35)

if digits[-2:-1] == "2":
    pu()
    goto(0, 65)
    seth(-90)
    pd()
    fd(35)

if digits[-2:-1] == "3":
    pu()
    goto(0, 100)
    seth(-135)
    pd()
    fd(50)

if digits[-2:-1] == "4":
    pu()
    goto(0, 65)
    seth(-45)
    pd()
    fd(50)

if digits[-2:-1] == "5":
    pu()
    goto(0, 100)
    seth(-90)
    pd()
    fd(35)
    lt(135)
    fd(50)

if digits[-2:-1] == "6":
    pu()
    goto(-30, 100)
    seth(180)
    pd()
    fd(35)

if digits[-2:-1] == "7":
    pu()
    goto(0, 100)
    seth(-90)
    pd()
    fd(35)
    lt(90)
    fd(35)

if digits[-2:-1] == "8":
    pu()
    goto(0, 65)
    seth(-90)
    pd()
    fd(35)
    rt(90)
    fd(35)

if digits[-2:-1] == "9":
    pu()
    goto(0, 100)
    seth(-90)
    pd()
    fd(35)
    lt(90)
    fd(35)
    lt(90)
    fd(35)

# if statments for the hundreds position
if digits[-3:-2] == "1":
    pu()
    goto(0, 0)
    seth(90)
    pd()
    fd(35)

if digits[-3:-2] == "2":
    pu()
    goto(0, 35)
    seth(90)
    pd()
    fd(35)

if digits[-3:-2] == "3":
    pu()
    goto(0, 0)
    seth(45)
    pd()
    fd(50)

if digits[-3:-2] == "4":
    pu()
    goto(0, 35)
    seth(135)
    pd()
    fd(50)

if digits[-3:-2] == "5":
    pu()
    goto(0, 0)
    seth(90)
    pd()
    fd(35)
    lt(135)
    fd(50)

if digits[-3:-2] == "6":
    pu()
    goto(30, 0)
    seth(0)
    pd()
    fd(35)

if digits[-3:-2] == "7":
    pu()
    goto(0, 0)
    seth(90)
    pd()
    fd(35)
    lt(90)
    fd(35)

if digits[-3:-2] == "8":
    pu()
    goto(0, 35)
    seth(90)
    pd()
    fd(35)
    rt(90)
    fd(35)

if digits[-3:-2] == "9":
    pu()
    goto(0, 0)
    seth(90)
    pd()
    fd(35)
    lt(90)
    fd(35)
    lt(90)
    fd(35)

# if statments for the thousands position
if digits[-4:-3] == "1":
    pu()
    goto(0, 0)
    seth(-90)
    pd()
    fd(35)

if digits[-4:-3] == "2":
    pu()
    goto(0, 35)
    seth(-90)
    pd()
    fd(35)

if digits[-4:-3] == "3":
    pu()
    goto(0, 0)
    seth(-35)
    pd()
    fd(50)

if digits[-4:-3] == "4":
    pu()
    goto(0, 35)
    seth(-135)
    pd()
    fd(50)

if digits[-4:-3] == "5":
    pu()
    goto(0, 0)
    seth(-90)
    pd()
    fd(35)
    rt(135)
    fd(50)

if digits[-4:-3] == "6":
    pu()
    goto(-30, 0)
    seth(0)
    pd()
    fd(35)

if digits[-4:-3] == "7":
    pu()
    goto(0, 0)
    seth(-90)
    pd()
    fd(35)
    rt(90)
    fd(35)

if digits[-4:-3] == "8":
    pu()
    goto(0, 35)
    seth(-90)
    pd()
    fd(35)
    lt(90)
    fd(35)

if digits[-4:-3] == "9":
    pu()
    goto(0, 0)
    seth(-90)
    pd()
    fd(35)
    rt(90)
    fd(35)
    rt(90)
    fd(35)



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