def tag(self):
"""Return the element's tag as a pydicom.tag.Tag."""
tag = self.components[0]
if self.is_sequence:
tag = tag.split('[')[0]
# (gggg,eeee) based tag
if ',' in tag:
group, element = tag.split(',')
if '(' in group:
group = group.replace('(', '')
if ')' in element:
element = element.replace(')', '')
if len(group) != 4 or len(element) != 4:
raise ValueError(f"Unable to parse element path component: "
f"'{self.components[0]}'")
return Tag(group, element)
# From this point on we assume that a keyword was supplied
kw = tag
# Keyword based tag - private keywords not allowed
if repeater_has_keyword(kw):
raise ValueError(
f"Repeating group elements must be specified using "
f"(gggg,eeee): '{self.components[0]}'")
tag = tag_for_keyword(kw)
# Test against None as 0x00000000 is a valid tag
if tag is not None:
return Tag(tag)
raise ValueError(
f"Unable to parse element path component: '{self.components[0]}'")
def __setattr__(self, name, value):
"""Intercept any attempts to set a value for an instance attribute.
If name is a DICOM keyword, set the corresponding tag and DataElement.
Else, set an instance (python) attribute as any other class would do.
Parameters
----------
name : str
The element keyword for the DataElement you wish to add/change. If
`name` is not a DICOM element keyword then this will be the
name of the attribute to be added/changed.
value
The value for the attribute to be added/changed.
"""
tag = tag_for_keyword(name)
if tag is not None: # successfully mapped name to a tag
if tag not in self:
# don't have this tag yet->create the data_element instance
VR = dictionary_VR(tag)
data_element = DataElement(tag, VR, value)
else:
# already have this data_element, just changing its value
data_element = self[tag]
data_element.value = value
# Now have data_element - store it in this dict
self[tag] = data_element
elif repeater_has_keyword(name):
# Check if `name` is repeaters element
raise ValueError('{} is a DICOM repeating group '
'element and must be added using '
'the add() or add_new() methods.'
.format(name))
else:
# name not in dicom dictionary - setting a non-dicom instance
# attribute
# XXX note if user mis-spells a dicom data_element - no error!!!
super(Dataset, self).__setattr__(name, value)
def __setattr__(self, name, value):
"""Intercept any attempts to set a value for an instance attribute.
If name is a DICOM keyword, set the corresponding tag and DataElement.
Else, set an instance (python) attribute as any other class would do.
Parameters
----------
name : str
The element keyword for the DataElement you wish to add/change. If
`name` is not a DICOM element keyword then this will be the
name of the attribute to be added/changed.
value
The value for the attribute to be added/changed.
"""
tag = tag_for_keyword(name)
if tag is not None: # successfully mapped name to a tag
if tag not in self:
# don't have this tag yet->create the data_element instance
VR = dictionary_VR(tag)
data_element = DataElement(tag, VR, value)
else:
# already have this data_element, just changing its value
data_element = self[tag]
data_element.value = value
# Now have data_element - store it in this dict
self[tag] = data_element
elif repeater_has_keyword(name):
# Check if `name` is repeaters element
raise ValueError('{} is a DICOM repeating group '
'element and must be added using '
'the add() or add_new() methods.'
.format(name))
else:
# name not in dicom dictionary - setting a non-dicom instance
# attribute
# XXX note if user mis-spells a dicom data_element - no error!!!
super(Dataset, self).__setattr__(name, value)
def test_repeater_has_keyword(self):
"""Test repeater_has_keyword"""
self.assertTrue(repeater_has_keyword('OverlayData'))
self.assertFalse(repeater_has_keyword('PixelData'))
def test_repeater_has_keyword(self):
"""Test repeater_has_keyword"""
self.assertTrue(repeater_has_keyword('OverlayData'))
self.assertFalse(repeater_has_keyword('PixelData'))
def test_repeater_has_keyword(self):
"""Test repeater_has_keyword"""
assert repeater_has_keyword('OverlayData')
assert not repeater_has_keyword('PixelData')
def test_repeater_has_keyword(self):
"""Test repeater_has_keyword"""
assert repeater_has_keyword('OverlayData')
assert not repeater_has_keyword('PixelData')
