I searched and found ways to check the type of an object but that will not help me in this case. I need to find out if a string CAN be changed to an Integer before actually doing it. I am using pyautogui to grab a region of the screen and save it, then pytesseract open the image, read it, and convert it into a string. Ultimately it is an equation that I would like to solve so then I must change the string into an integer (done in my second function below). At times pytesseract does not read the image correctly so instead of saying something like 5 + 4 it ends up with something like 5 - H, so when my code attempts to turn H into an integer it crashes.

**My Question:** How can I check to see if for example `equation[0]` can be made an integer before actually running `int(equation[0])` on it and causing my script to crash? 

**My Code:** Simplified greatly to only show the needed lines:

```
from PIL import Image
import PIL.ImageOps
import pytesseract
import pyautogui
import sys
import time

# --- functions ---

def get_text(image):
    return pytesseract.image_to_string(image, config='-psm 6')

def get_int(image):
    return int(get_text(image).replace(',', ''))

# --- main ---

     #Is equation= needed below or can it be removed?
equation = pyautogui.screenshot('equation.png',region=(845, 262, 240, 85))
img = Image.open('equation.png')
equation = get_text(img)
print ('Equation:',equation)

#Numbers are always single digit (ex. 9-7=) Use slicing to pull numbers and symbol
firstnum = int(equation[0])
sign = equation[1]
secondnum = int(equation[2])

#Adition and Subtraction are the only options
if sign == '-':
    answer = firstnum - secondnum
if sign =="+":
    answer = firstnum + secondnum

```

EDIT:
Try and Except seems to be a good way to handle this. Can I somehow turn this into a loop though so it can be checked multiple times. I have found someone used `while true` as a loop and put try except inside, I am not sure if is will work for me though? Here is how I THINK my Try Except should look? If possible I would like to loop the try until it does not hit an exception.

```
try:
    firstnum = int(equation[0])
except:
    equation = pyautogui.screenshot('equation.png',region=(845, 262, 240, 85))
    img = Image.open('equation.png')
    equation = get_text(img)
    firstnum = int(equation[0])

```