shell bypass 403
�
@��cc @ s? d Z i e d 6Z e d � Z e d k r; e d e � n d S( s�
Unpack tuple
>>> t = (1, 2, 3)
>>> a, b, c = t
>>> a == 1 and b == 2 and c == 3
True
Unpack list
>>> l = [4, 5, 6]
>>> a, b, c = l
>>> a == 4 and b == 5 and c == 6
True
Unpack implied tuple
>>> a, b, c = 7, 8, 9
>>> a == 7 and b == 8 and c == 9
True
Unpack string... fun!
>>> a, b, c = 'one'
>>> a == 'o' and b == 'n' and c == 'e'
True
Unpack generic sequence
>>> class Seq:
... def __getitem__(self, i):
... if i >= 0 and i < 3: return i
... raise IndexError
...
>>> a, b, c = Seq()
>>> a == 0 and b == 1 and c == 2
True
Single element unpacking, with extra syntax
>>> st = (99,)
>>> sl = [100]
>>> a, = st
>>> a
99
>>> b, = sl
>>> b
100
Now for some failures
Unpacking non-sequence
>>> a, b, c = 7
Traceback (most recent call last):
...
TypeError: 'int' object is not iterable
Unpacking tuple of wrong size
>>> a, b = t
Traceback (most recent call last):
...
ValueError: too many values to unpack
Unpacking tuple of wrong size
>>> a, b = l
Traceback (most recent call last):
...
ValueError: too many values to unpack
Unpacking sequence too short
>>> a, b, c, d = Seq()
Traceback (most recent call last):
...
ValueError: need more than 3 values to unpack
Unpacking sequence too long
>>> a, b = Seq()
Traceback (most recent call last):
...
ValueError: too many values to unpack
Unpacking a sequence where the test for too long raises a different kind of
error
>>> class BozoError(Exception):
... pass
...
>>> class BadSeq:
... def __getitem__(self, i):
... if i >= 0 and i < 3:
... return i
... elif i == 3:
... raise BozoError
... else:
... raise IndexError
...
Trigger code while not expecting an IndexError (unpack sequence too long, wrong
error)
>>> a, b, c, d, e = BadSeq()
Traceback (most recent call last):
...
BozoError
Trigger code while expecting an IndexError (unpack sequence too short, wrong
error)
>>> a, b, c = BadSeq()
Traceback (most recent call last):
...
BozoError
t doctestsc C s4 d d l m } d d l m } | j | | � d S( Ni����( t test_support( t test_unpack( t testR R t run_doctest( t verboseR R ( ( s7 /usr/local/python-2.7/lib/python2.7/test/test_unpack.pyt test_main| s t __main__R N( R t __test__t FalseR t __name__t True( ( ( s7 /usr/local/python-2.7/lib/python2.7/test/test_unpack.pyt <module>x s