python filenotfounderror,Python FileNotFound

I am fairly new to python.

I am trying to make a script that will read sudoku solutions and determent if they are correct or not.

Things I need:

1] Prompt the user to enter a file/file path which includes the sudoku numbers. Its a .txt file of 9 rows and columns. Consist only of numbers.

2] Have some kind of an error handling.

3] Then, if the sudoku is valid, i should create a new text file using the same format as the original input file with the prefix "Correct_"

I have not fully finished the program, but I get this error when I put a false path or file name.

Hello to Sudoku valitator,

Please type in the path to your file and press 'Enter': example.txt #This is a non existing file, to test the Error Exception

'Traceback (most recent call last):

File "C:/Users/FEDROS/Desktop/bs.py", line 9, in

sudoku = open(prompt, 'r').readlines()

FileNotFoundError: [Errno 2] No such file or directory: 'example.txt'

Here is my script:

while True:

try:

prompt = input("\n Hello to Sudoku valitator,"

"\n \n Please type in the path to your file and press 'Enter': ")

break

except (FileNotFoundError, IOError):

print("Wrong file or file path")

sudoku = open(prompt, 'r').readlines()

def check(game):

n = len(game)

if n < (1):

return False

for i in range(0, n):

horizontal = []

vertical = []

for k in range(0, n):

if game[k][i] in vertical:

return ("File checked for errors. Your options are wrong!")

vertical.append(game[k][i])

if game[i][k] in horizontal:

return ("File checked for errors. Your options are wrong!")

horizontal.append(game[i][k])

return ("File checked for errors. Your options are correct!")

print (check(sudoku))

Thanks, any advice or help will be appreciated.

解决方案

try block should be around open. Not around prompt.

while True:

prompt = input("\n Hello to Sudoku valitator,"

"\n \n Please type in the path to your file and press 'Enter': ")

try:

sudoku = open(prompt, 'r').readlines()

except FileNotFoundError:

print("Wrong file or file path")

else:

break