human
Solve the following python programming problem given the following code:
def expect_dtypes(* _pos, **named) : 
    "
    Preprocessing decorator that verifies inputs have expected numpy dtypes.

    Usage
    -----
    >>> from numpy import dtype, arange
    >>> @expect_dtypes(x=dtype(int))
    ... def foo(x, y):
    ...    return x, y
    ...
    >>> foo(arange(3), 'foo')
    (array([0, 1, 2]), 'foo')
    >>> foo(arange(3, dtype=float), 'foo')
    Traceback (most recent call last):
       ...
    TypeError: foo() expected an argument with dtype 'int64' for argument 'x', but got dtype 'float64' instead.  # noqa
    " 
    if _pos : 
        raise TypeError ('expect_dtypes() only takes keyword arguments.') 
for (name, type_) in iteritems (name) : 
        if (not isinstance (type_, (dtype, tuple))) : 
            raise TypeError ('expect_dtypes() expected a numpy dtype or tuple of dtypes for argument {name!r}, but got {dtype} instead.'.format (name = name, dtype = dtype)) 
def _expect_dtype(_dtype_or_dtype_tuple) : 
        '
        Factory for dtype-checking functions that work the @preprocess
        decorator.
        ' 
        if isinstance (_dtype_or_dtype_tuple, tuple) : 
            allowed_dtypes = _dtype_or_dtype_tuple 
else : 
            allowed_dtypes = (_dtype_or_dtype_tuple,) 
template = "%(funcname)s() expected a value with dtype {dtype_str} for argument '%(argname)s', but got %(actual)r instead.".format (dtype_str = ' or '.join ((repr (d.name) for d in allowed_dtypes))) 
        def check_dtype(value) : 
            return (getattr (value, 'dtype', None) not in allowed_dtypes) 
def display_bad_value(value) : 
            try : 
                return value.dtype.name 
except AttributeError : 
                return value 
return make_check (exc_type = TypeError, template = template, pred = check_dtype, actual = display_bad_value) 
return preprocess (** valmap (_expect_dtype, named)) 

    
    

    Fix the buggy line: for (name, type_) in iteritems (name) :
assistant
#Here is Python code to fix the buggy line: for (name, type_) in iteritems (name) :
.

for (name, type_) in iteritems (named) :