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GeezerVison is showing github.com — document-api-python/tableaudocumentapi/workbook.py at master · movingHera/document-api-python Expand file tree/ Copy pathworkbook.pyMore file actions 118 lines (84 loc) · 3.27 KB / Copy pathworkbook.pyFile metadata and controls118 lines (84 loc) · 3.27 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 import weakref from tableaudocumentapi import Datasource, xfile from tableaudocumentapi.xfile import xml_open class Workbook(object): """A class for writing Tableau workbook files.""" def __init__(self, filename): """Open the workbook at `filename`. This will handle packaged and unpacked workbook files automatically. This will also parse Data Sources and Worksheets for access. """ self._filename = filename self._workbookTree = xml_open(self._filename, 'workbook') self._workbookRoot = self._workbookTree.getroot() # prepare our datasource objects self._datasources = self._prepare_datasources( self._workbookRoot) # self.workbookRoot.find('datasources') self._datasource_index = self._prepare_datasource_index(self._datasources) self._worksheets = self._prepare_worksheets( self._workbookRoot, self._datasource_index ) @property def datasources(self): return self._datasources @property def worksheets(self): return self._worksheets @property def filename(self): return self._filename def save(self): """ Call finalization code and save file. Args: None. Returns: Nothing. """ # save the file xfile._save_file(self._filename, self._workbookTree) def save_as(self, new_filename): """ Save our file with the name provided. Args: new_filename: New name for the workbook file. String. Returns: Nothing. """ xfile._save_file( self._filename, self._workbookTree, new_filename) @staticmethod def _prepare_datasource_index(datasources): retval = weakref.WeakValueDictionary() for datasource in datasources: retval[datasource.name] = datasource return retval @staticmethod def _prepare_datasources(xml_root): datasources = [] # loop through our datasources and append datasource_elements = xml_root.find('datasources') if datasource_elements is None: return [] for datasource in datasource_elements: ds = Datasource(datasource) datasources.append(ds) return datasources @staticmethod def _prepare_worksheets(xml_root, ds_index): worksheets = [] worksheets_element = xml_root.find('.//worksheets') if worksheets_element is None: return worksheets for worksheet_element in worksheets_element: worksheet_name = worksheet_element.attrib['name'] worksheets.append(worksheet_name) # TODO: A real worksheet object, for now, only name dependencies = worksheet_element.findall('.//datasource-dependencies') for dependency in dependencies: datasource_name = dependency.attrib['datasource'] datasource = ds_index[datasource_name] for column in dependency.findall('.//column'): column_name = column.attrib['name'] if column_name in datasource.fields: datasource.fields[column_name].add_used_in(worksheet_name) return worksheets |
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