Cos'è (File '', linea 1) in Python?

File "", linea 1 - si riferisce al codice o alla dichiarazione nella linea 1 (quando si usa l'interprete Python). Di solito è seguito da una sorta di messaggio, come un messaggio di errore.

Lo puoi osservare quando inserisci una sintassi non valida o hai qualsiasi altro tipo di errore nel tuo codice mentre codifichi sull'interprete. Alcune delle situazioni sono:

ESPLICAZIONE-

• Se provo ad eseguire il mio file python (test[dot]py) usando l'interprete python, lancia un Syntaxerror:

1. >>> python test.py 
2. File "", line 1 
3. python test.py 
4. ^ 
5. SyntaxError: invalid syntax 

Why? —Because that should be done in the shell! Not in the interpreter, where you are supposed to run only valid code snippets and statements; not files.

• If I enter invalid statements or codes, it throws many errors, such as NameError, SyntaxError:

1. >>> display 
2. Traceback (most recent call last): 
3. File "", line 1, in  
4. NameError: name 'display' is not defined 
5. >>> display something 
6. File "", line 1 
7. display something 
8. ^ 
9. SyntaxError: invalid syntax 
10. >>> open my file 
11. File "", line 1 
12. open my file 
13. ^ 
14. SyntaxError: invalid syntax 

• If I enter 1/0, it throws ZeroDivisionError:

1. >>> 1/0 
2. Traceback (most recent call last): 
3. File "", line 1, in  
4. ZeroDivisionError: division by zero 

• Similar example:

1. >>> def myFunc(): 
2. ... print("hello world!") 
3. ... display my name 
4. File "", line 3 
5. display my name 
6. ^ 
7. SyntaxError: invalid syntax 

In the above example you can see that the moment I enter an invalid statement in line 3, the interpreter instantly throws a SyntaxError and we can see on line 4 it is displayed as File "", line 3. I gave this example just to show that it is not necessary that it will always be like File "", line 1, it can also be File "", line 2 , File "", line 3 , File "", line 4 , etc. according to the line for which the error is thrown.

Hope this helps.

Happy Coding! :)