9seconds · December 11, 2013 18:35
diff --git a/wtf1 b/wtf1
 >>> a = (1, [2, 3])
 >>> a[1] += [4, 5]
 Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
 TypeError: 'tuple' object does not support item assignment
 >>> print a
 (1, [2, 3, 4, 5])
 >>> 
diff --git a/wtf2 b/wtf2
 >>> a = []
 >>> b = a += [1]
  File "<stdin>", line 1
    b = a += [1]
           ^
 SyntaxError: invalid syntax
 >>> b = a.__iadd__([1])
 >>> print b
 [1]
	>>> a = (1, [2, 3])
	>>> a[1] += [4, 5]
	Traceback (most recent call last):
	File "<stdin>", line 1, in <module>
	TypeError: 'tuple' object does not support item assignment
	>>> print a
	(1, [2, 3, 4, 5])
	>>>