Python FileNotFound

Question

我對python相當陌生。

我想製作一個腳本，它將讀取數獨解決方案並確定它們是否正確。

事情，我需要：

1]提示用戶輸入其中包括數獨數字的文件/文件路徑。它是一個9行和列的.txt文件。只包含數字。

2]有某種錯誤處理。

3]然後，如果數獨是有效的，我應該使用相同的格式，帶有前綴「Correct_」原始輸入文件創建一個新的文本文件

我還沒有完全完成的計劃，但我當我輸入錯誤的路徑或文件名時會出現此錯誤。

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 <module> 
    sudoku = open(prompt, 'r').readlines() 
FileNotFoundError: [Errno 2] No such file or directory: 'example.txt' 

這裏是我的腳本：

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)) 

謝謝，任何意見或幫助將不勝感激。

Answer 1

try塊應該在周圍打開。不在提示。

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