doctest per docstring nidificato

Question

Supponiamo che io abbia seguente codice:

def foo(s): 
    """A dummy function foo. For example: 

>>> a = '''This is a test string line 1 
This is a test string line 2 
This is a test string line 3''' 
>>> foo(a) 
This is a test string line 1 
This is a test string line 2 
This is a test string line 3 
>>> 
    """ 
    print s 

if __name__ == '__main__': 
    import doctest 
    doctest.testmod() 

E salviamo come foo.py. Quando eseguo:

C:\Python27>python.exe foo.py 
********************************************************************** 
File "foo.py", line 5, in __main__.foo 
Failed example: 
    a = '''This is a test string line 1 
Exception raised: 
    Traceback (most recent call last): 
     File "C:\Python27\lib\doctest.py", line 1254, in __run 
     compileflags, 1) in test.globs 
     File "<doctest __main__.foo[0]>", line 1 
     a = '''This is a test string line 1 
             ^
    SyntaxError: EOF while scanning triple-quoted string literal 
********************************************************************** 
File "foo.py", line 8, in __main__.foo 
Failed example: 
    foo(a) 
Exception raised: 
    Traceback (most recent call last): 
     File "C:\Python27\lib\doctest.py", line 1254, in __run 
     compileflags, 1) in test.globs 
     File "<doctest __main__.foo[1]>", line 1, in <module> 
     foo(a) 
    NameError: name 'a' is not defined 
********************************************************************** 
1 items had failures: 
    2 of 2 in __main__.foo 
***Test Failed*** 2 failures. 

hanno cercato trattino il docstring (>>> a = '' '... ''' Hanno controllato tutti i trattini - 4 posti per ciascun trattino.) E ha cambiato apostrofo a doppio apice (>>> a = "" "...." ""), gli errori sono diversi e il doctest non andrà a buon fine. Attualmente l'unica cosa che funziona è unire tutte le linee a una stringa lunga estrema e separarle con '\ r \ n'.

Mi manca qualcosa?

Answer 1

penso che è necessario mettere alcuni punti ci

>>> a = """This is a test string line 1 
... This is a test string line 2 
... This is a test string line 3"""