The specification has the following to say about defined names:
“Defined names are descriptive text that is used to represents a cell, range of cells, formula, or constant value.”
This means they are very loosely defined. They might contain a constant, a formula, a single cell reference, a range of cells or multiple ranges of cells across different worksheets. Or all of the above. They are defined globally for a workbook and accessed from there defined_names attribue.
Sample use for ranges¶
Accessing a range called “my_range”:
my_range = wb.defined_names['my_range'] # if this contains a range of cells then the destinations attribute is not None dests = my_range.destinations # returns a generator of (worksheet title, cell range) tuples cells =  for title, coord in dests: ws = wb[title] cells.append(ws[coord])
Creating new named ranges¶
import openpyxl wb = openpyxl.Workbook() new_range = openpyxl.workbook.defined_name.DefinedName('newrange', attr_text='Sheet!$A$1:$A$5') wb.defined_names.append(new_range) # create a local named range (only valid for a specific sheet) sheetid = wb.sheetnames.index('Sheet') private_range = openpyxl.workbook.defined_name.DefinedName('privaterange', attr_text='Sheet!$A$6', localSheetId=sheetid) wb.defined_names.append(private_range) # this local range can't be retrieved from the global defined names assert('privaterange' not in wb.defined_names) # the scope has to be supplied to retrieve local ranges: print(wb.defined_names.localnames(sheetid)) print(wb.defined_names.get('privaterange', sheetid).attr_text)