3.1.2 (2023-03-11)

#1963 Cannot read worksheets in read-only mode with locally scoped definitions
#1974 Empty custom properties cause invalid files

3.1.1 (2023-02-13)

Bugfixes

#1881 DocumentProperties times set by module import only
#1947 Worksheet-specific definitions are missing

3.1.0 (2023-01-31)

New Features

Added support for data table formulae
Mapped chartspace graphical properties to charts for advanced formatting

Bugfixes

#1156 Table filters are always overriden
#1360 Can’t read some ScatterCharts if n
#1724 Problem with multilevel indices in dataframes
#1772 Problem with category indices in dataframes
#1786 NamedStyles share attributes - mutables gotcha
#1851 Allow print area to be set to None
#1852 Worksheet for print title and print areas can’t be found
#1853 Custom document properties that are strings can be empty
#1858 ConditionalFormatting lost when pivot table updated
#1864 Better handling of defined names
#1904 dataframe_to_rows() misalignment on multiindex
#1908 Ditto
#1912 Excel doesn’t like xmlns:space on nodes with only whitespace, which it treats as empty.
#1942 Exception when print areas use table references.

Pull Requests

PR409 Support for Rich Text in cells
PR411 Provide more information when workbook cannot be loaded
PR407 Support for Custom Document Properties

Deprecations

The following properties have been removed from worksheets: formula_attributes, page_breaks, show_summary_below, show_summary_right, page_size orientation. Client code should use the relevant objects.

Removals

The following deprecated methods have been removed from workbooks: get_named_range, add_named_range, remove_named_range. And the get_emu_dimesions from images.

3.0.10 (2022-05-19)

Bugfixes

#1684 Image files not closed when workbooks are saved
#1778 Problem with missing scope attribute in Pivot Table formats
#1821 Excel unhappy when multiple sorts are defined

3.0.9 (2021-09-22)

Bugfixes

#1284 Ignore blank ignored in existing Data Validations
#1539 Add support for cell protection for merged cell ranges
#1645 Timezone-aware datetimes raise an Exception
#1666 Improved normalisation of chart series
#1670 Catch OverflowError for out of range datetimes
#1708 Alignment.relativeIndent can be negative
#1736 Incorrect default value groupBy attribute

3.0.8 (brown bag)

Deleted because it contained breaking changes from 3.1

3.0.7 (2021-03-09)

Bugfixes

#1510 Problems with zero time values
#1588 Not possible to correctly convert excel dates to timedelta
#1589 Exception raised when merging cells which do not have borders all the way round.
#1594 Python 2 print statement in the tutorial

Pull Requests

PR392 Add documentation on datetime handling
PR393 Drop dependency on jdcal
PR394 Datetime rounding
PR395 Unify handling of 1900 epoch
PR397 Add explicit support for reading datetime deltas
PR399 Millisecond precision for datetimes

3.0.6 (2021-01-14)

Bugfixes

#1154 Borders in differential styles are incorrect
#1287 Error when opening some pivot tables
#1366 Resave breaks the border format in conditional formatting rules
#1450 Read-only workbook not closed properly if generator interrupted
#1547 Pandas.Multiindex.labels deprecated
#1552 Pandas.Multiinex not expanded correctly
#1557 Cannot read rows with exponents
#1568 numpy.float is deprecated
#1571 Cells without coordinate attributes not always correctly handled

Pull Requests

PR385 Improved handling of borders for differential styles
PR386 Support subclasses of datetime objects
PR387 Improved handling of cells without coordinates

3.0.5 (2020-08-21)

Bugfixes

#1413 Incorrectly consider currency format as datetime
#1490 Cannot copy worksheets with merged cells
#1492 Empty worksheets do not return generators when looping.
#1496 Hyperlinks duplicated on multiple saves
#1500 Incorrectly literal format as datetime
#1502 Links set to range of cells not preserved
#1507 Exception when opening workbook with chartsheets and tables

3.0.4 (2020-06-24)

Bugfixes

#844 Find tables by name
#1414 Worksheet protection missing in existing files
#1439 Exception when reading files with external images
#1452 Reading lots of merged cells is very slow.
#1455 Read support for Bubble Charts.
#1458 Preserve any indexed colours
#1473 Reading many thousand of merged cells is really slow.
#1474 Adding tables in write-only mode raises an exception.

Pull Requests

PR377 Add support for finding tables by name or range.

3.0.3 (2020-01-20)

Bugfixes

#1260 Exception when handling merged cells with hyperlinks
#1373 Problems when both lxml and defusedxml are installed
#1385 CFVO with incorrect values cannot be processed

3.0.2 (2019-11-25)

Bug fixes

#1267 DeprecationError if both defusedxml and lxml are installed
#1345 ws._current_row is higher than ws.max_row
#1365 Border bottom style is not optional when it should be
#1367 Empty cells in read-only, values-only mode are sometimes returned as ReadOnlyCells
#1368 Cannot add page breaks to existing worksheets if none exist already

Pull Requests

PR359 Improvements to the documentation

3.0.1 (2019-11-14)

Bugfixes

#1250 Cannot read empty charts.

Pull Requests

PR354 Fix for #1250
PR352 TableStyleElement is a sequence

3.0.0 (2019-09-25)

Python 3.6+ only release

2.6.4 (2019-09-25)

Final release for Python 2.7 and 3.5

Bugfixes

` #1330 <https://foss.heptapod.net/openpyxl/openpyxl/-/issues/1330>`_ Cannot save workbooks with comments more than once.

2.6.3 (2019-08-19)

Bugfixes

#1237 Fix 3D charts.
#1290 Minimum for holeSize in Doughnut charts too high
#1291 Warning for MergedCells with comments
#1296 Pagebreaks duplicated
#1309 Workbook has no default CellStyle
#1330 Workbooks with comments cannot be saved multiple times

Pull Requests

PR344 Make sure NamedStyles number formats are correctly handled

2.6.2 (2019-03-29)

Bugfixes

#1173 Workbook has no _date_formats attribute
#1190 Cannot create charts for worksheets with quotes in the title
#1228 MergedCells not removed when range is unmerged
#1232 Link to pivot table lost from charts
#1233 Chart colours change after saving
#1236 Cannot use ws.cell in read-only mode with Python 2.7

2.6.1 (2019-03-04)

Bugfixes

#1174 ReadOnlyCell.is_date does not work properly
#1175 Cannot read Google Docs spreadsheet with a Pivot Table
#1180 Charts created with openpyxl cannot be styled
#1181 Cannot handle some numpy number types
#1182 Exception when reading unknowable number formats
#1186 Only last formatting rule for a range loaded
#1191 Give MergedCell a value attribute
#1193 Cannot process worksheets with comments
#1197 Cannot process worksheets with both row and page breaks
#1204 Cannot reset dimensions in ReadOnlyWorksheets
#1211 Incorrect descriptor in ParagraphProperties
#1213 Missing hier attribute in PageField raises an exception

2.6.0 (2019-02-06)

Bugfixes

#1162 Exception on tables with names containing spaces.
#1170 Cannot save files with existing images.

2.6.-b1 (2019-01-08)

Bugfixes

#1141 Cannot use read-only mode with stream
#1143 Hyperlinks always set on A1
#1151 Internal row counter not initialised when reading files
#1152 Exception raised on out of bounds date

2.6-a1 (2018-11-21)

Major changes

Implement robust for merged cells so that these can be formatted the way Excel does without confusion. Thanks to Magnus Schieder.

Minor changes

Add support for worksheet scenarios
Add read support for chartsheets
Add method for moving ranges of cells on a worksheet
Drop support for Python 3.4
Last version to support Python 2.7

Deprecations

Type inference and coercion for cell values

2.5.14 (2019-01-23)

Bugfixes

#1150 Correct typo in LineProperties
#1142 Exception raised for unsupported image files
#1159 Exception raised when cannot find source for non-local cache object

Pull Requests

PR301 Add support for nested brackets to the tokeniser
PR303 Improvements on handling nested brackets in the tokeniser

2.5.13 (brown bag)

2.5.12 (2018-11-29)

Bugfixes

#1130 Overwriting default font in Normal style affects library default
#1133 Images not added to anchors.
#1134 Cannot read pivot table formats without dxId
#1138 Repeated registration of simple filter could lead to memory leaks

Pull Requests

PR300 Use defusedxml if available

2.5.11 (2018-11-21)

Pull Requests

PR295 Improved handling of missing rows
PR296 Add support for defined names to tokeniser

2.5.10 (2018-11-13)

Bugfixes

#1114 Empty column dimensions should not be saved.

Pull Requests

PR285 Tokenizer failure for quoted sheet name in second half of range
PR289 Improved error detection in ranges.

2.5.9 (2018-10-19)

Bugfixes

#1000 Clean AutoFilter name definitions
#1106 Attribute missing from Shape object
#1109 Failure to read all DrawingML means workbook can’t be read

Pull Requests

PR281 Allow newlines in formulae
PR284 Fix whitespace in front of infix operator in formulae

2.5.8 (2018-09-25)

#877 Cannot control how missing values are displayed in charts.
#948 Cell references can’t be used for chart titles
#1095 Params in iter_cols and iter_rows methods are slightly wrong.

2.5.7 (2018-09-13)

#954 Sheet title containing % need quoting in references
#1047 Cannot set quote prefix
#1093 Pandas timestamps raise KeyError

2.5.6 (2018-08-30)

#832 Read-only mode can leave find-handles open when reading dimensions
#933 Set a worksheet directly as active
#1086 Internal row counter not adjusted when rows are deleted or inserted

2.5.5 (2018-08-04)

Bugfixes

#1049 Files with Mac epoch are read incorrectly
#1058 Cannot copy merged cells
#1066 Cannot access ws.active_cell

Pull Requests

PR267 Introduce read-support for images

2.5.4 (2018-06-07)

Bugfixes

#1025 Cannot read files with 3D charts.
#1030 Merged cells take a long time to parse

Minor changes

Improve read support for pivot tables and don’t always create a Filters child for filterColumn objects.
Support folding rows <https://foss.heptapod.net/openpyxl/openpyxl/-/merge_requests/259/fold-rows>`_

2.5.3 (2018-04-18)

Bugfixes

#983 Warning level too aggressive.
#1015 Alignment and protection values not saved for named styles.
#1017 Deleting elements from a legend doesn’t work.
#1018 Index names repeated for every row in dataframe.
#1020 Worksheet protection not being stored.
#1023 Exception raised when reading a tooltip.

2.5.2 (2018-04-06)

Bugfixes

#949 High memory use when reading text-heavy files.
#970 Copying merged cells copies references.
#978 Cannot set comment size.
#985 Exception when trying to save workbooks with no views.
#995 Cannot delete last row or column.
#1002 Cannot read Drawings containing embedded images.

Minor changes

Support for dataframes with multiple columns and multiple indices.

2.5.1 (2018-03-12)

Bugfixes

#934 Headers and footers not included in write-only mode.
#960 Deprecation warning raised when using ad-hoc access in read-only mode.
#964 Not all cells removed when deleting multiple rows.
#966 Cannot read 3d bar chart correctly.
#967 Problems reading some charts.
#968 Worksheets with SHA protection become corrupted after saving.
#974 Problem when deleting ragged rows or columns.
#976 GroupTransforms and GroupShapeProperties have incorrect descriptors
Make sure that headers and footers in chartsheets are included in the file

2.5.0 (2018-01-24)

Minor changes

Correct definition for Connection Shapes. Related to # 958

2.5.0-b2 (2018-01-19)

Bugfixes

#915 TableStyleInfo has no required attributes
#925 Cannot read files with 3D drawings
#926 Incorrect version check in installer
Cell merging uses transposed parameters
#928 ExtLst missing keyword for PivotFields
#932 Inf causes problems for Excel
#952 Cannot load table styles with custom names

Major Changes

You can now insert and delete rows and columns in worksheets

Minor Changes

pip now handles which Python versions can be used.

2.5.0-b1 (2017-10-19)

Bugfixes

#812 Explicitly support for multiple cell ranges in conditonal formatting
#827 Non-contiguous cell ranges in validators get merged
#837 Empty data validators create invalid Excel files
#860 Large validation ranges use lots of memory
#876 Unicode in chart axes not handled correctly in Python 2
#882 ScatterCharts have defective axes
#885 Charts with empty numVal elements cannot be read
#894 Scaling options from existing files ignored
#895 Charts with PivotSource cannot be read
#903 Cannot read gradient fills
#904 Quotes in number formats could be treated as datetimes

Major Changes

worksheet.cell() no longer accepts a coordinate parameter. The syntax is now ws.cell(row, column, value=None)

Minor Changes

Added CellRange and MultiCellRange types (thanks to Laurent LaPorte for the suggestion) as a utility type for things like data validations, conditional formatting and merged cells.

Deprecations

ws.merged_cell_ranges has been deprecated because MultiCellRange provides sufficient functionality

2.5.0-a3 (2017-08-14)

Bugfixes

#848 Reading workbooks with Pie Charts raises an exception
#857 Pivot Tables without Worksheet Sources raise an exception

2.5.0-a2 (2017-06-25)

Major Changes

Read support for charts

Bugfixes

#833 Cannot access chartsheets by title
#834 Preserve workbook views
#841 Incorrect classification of a datetime

2.5.0-a1 (2017-05-30)

Compatibility

Dropped support for Python 2.6 and 3.3. openpyxl will not run with Python 2.6

Major Changes

Read/write support for pivot tables

Deprecations

Dropped the anchor method from images and additional constructor arguments

Bugfixes

#779 Fails to recognise Chinese date format`
#828 Include hidden cells in charts`

Pull requests

163 Improved GradientFill

Minor changes

Remove deprecated methods from Cell
Remove deprecated methods from Worksheet
Added read/write support for the datetime type for cells

2.4.11 (2018-01-24)

#957 https://foss.heptapod.net/openpyxl/openpyxl/-/issues/957 Relationship type for tables is borked

2.4.10 (2018-01-19)

Bugfixes

#912 https://foss.heptapod.net/openpyxl/openpyxl/-/issues/912 Copying objects uses shallow copy
#921 https://foss.heptapod.net/openpyxl/openpyxl/-/issues/921 API documentation not generated automatically
#927 https://foss.heptapod.net/openpyxl/openpyxl/-/issues/927 Exception raised when adding coloured borders together
#931 https://foss.heptapod.net/openpyxl/openpyxl/-/issues/931 Number formats not correctly deduplicated

Pull requests

203 https://foss.heptapod.net/openpyxl/openpyxl/-/merge_requests/203/ Correction to worksheet protection description
210 https://foss.heptapod.net/openpyxl/openpyxl/-/merge_requests/210/ Some improvements to the API docs
211 https://foss.heptapod.net/openpyxl/openpyxl/-/merge_requests/211/ Improved deprecation decorator
218 https://foss.heptapod.net/openpyxl/openpyxl/-/merge_requests/218/ Fix problems with deepcopy

2.4.9 (2017-10-19)

Bugfixes

#809 Incomplete documentation of copy_worksheet method
#811 Scoped definedNames not removed when worksheet is deleted
#824 Raise an exception if a chart is used in multiple sheets
#842 Non-ASCII table column headings cause an exception in Python 2
#846 Conditional formats not supported in write-only mode
#849 Conditional formats with no sqref cause an exception
#859 Headers that start with a number conflict with font size
#902 TableStyleElements don’t always have a condtional format
#908 Read-only mode sometimes returns too many cells

Pull requests

#179 Cells kept in a set
#180 Support for Workbook protection
#182 Read support for page breaks
#183 Improve documentation of copy_worksheet method
#198 Fix for #908

2.4.8 (2017-05-30)

Bugfixes

AutoFilter.sortState being assignd to the ws.sortState
#766 Sheetnames with apostrophes need additional escaping
#729 Cannot open files created by Microsoft Dynamics
#819 Negative percents not case correctly
#821 Runtime imports can cause deadlock
#855 Print area containing only columns leads to corrupt file

Minor changes

Preserve any table styles

2.4.7 (2017-04-24)

Bugfixes

#807 Sample files being included by mistake in sdist

2.4.6 (2017-04-14)

Bugfixes

#776 Cannot apply formatting to plot area
#780 Exception when element attributes are Python keywords
#781 Exception raised when saving files with styled columns
#785 Number formats for data labels are incorrect
#788 Worksheet titles not quoted in defined names
#800 Font underlines not read correctly

2.4.5 (2017-03-07)

Bugfixes

#750 Adding images keeps file handles open
#772 Exception for column-only ranges
#773 Cannot copy worksheets with non-ascii titles on Python 2

Pull requests

161 Support for non-standard names for Workbook part.
162 Documentation correction

2.4.4 (2017-02-23)

Bugfixes

#673 Add close method to workbooks
#762 openpyxl can create files with invalid style indices
#729 Allow images in write-only mode
#744 Rounded corners for charts
#747 Use repr when handling non-convertible objects
#764 Hashing function is incorrect
#765 Named styles share underlying array

Minor Changes

Add roundtrip support for worksheet tables.

Pull requests

160 Don’t init mimetypes more than once.

2.4.3 (unreleased)

bad release

2.4.2 (2017-01-31)

Bug fixes

#727 DeprecationWarning is incorrect
#734 Exception raised if userName is missing
#739 Always provide a date1904 attribute
#740 Hashes should be stored as Base64
#743 Print titles broken on sheetnames with spaces
#748 Workbook breaks when active sheet is removed
#754 Incorrect descriptor for Filter values
#756 Potential XXE vulerability
#758 Cannot create files with page breaks and charts
#759 Problems with worksheets with commas in their titles

Minor Changes

Add unicode support for sheet name incrementation.

2.4.1 (2016-11-23)

Bug fixes

#643 Make checking for duplicate sheet titles case insensitive
#647 Trouble handling LibreOffice files with named styles
#687 Directly assigned new named styles always refer to “Normal”
#690 Cannot parse print titles with multiple sheet names
#691 Cannot work with macro files created by LibreOffice
Prevent duplicate differential styles
#694 Allow sheet titles longer than 31 characters
#697 Cannot unset hyperlinks
#699 Exception raised when format objects use cell references
#703 Copy height and width when copying comments
#705 Incorrect content type for VBA macros
#707 IndexError raised in read-only mode when accessing individual cells
#711 Files with external links become corrupted
#715 Cannot read files containing macro sheets
#717 Details from named styles not preserved when reading files
#722 Remove broken Print Title and Print Area definitions

Minor changes

Add support for Python 3.6
Correct documentation for headers and footers

Deprecations

Worksheet methods get_named_range() and get_sqaured_range()

Bug fixes

2.4.0 (2016-09-15)

Bug fixes

#652 Exception raised when epoch is 1904
#642 Cannot handle unicode in headers and footers in Python 2
#646 Cannot handle unicode sheetnames in Python 2
#658 Chart styles, and axis units should not be 0
#663 Strings in external workbooks not unicode

Major changes

Add support for builtin styles and include one for Pandas

Minor changes

Add a keep_links option to load_workbook. External links contain cached copies of the external workbooks. If these are big it can be advantageous to be able to disable them.
Provide an example for using cell ranges in DataValidation.
PR 138 - add copy support to comments.

2.4.0-b1 (2016-06-08)

Minor changes

Add an the alias hide_drop_down to DataValidation for showDropDown because that is how Excel works.

Bug fixes

#625 Exception raises when inspecting EmptyCells in read-only mode
#547 Functions for handling OOXML “escaped” ST_XStrings
#629 Row Dimensions not supported in write-only mode
#530 Problems when removing worksheets with charts
#630 Cannot use SheetProtection in write-only mode

Features

Add write support for worksheet tables

2.4.0-a1 (2016-04-11)

Minor changes

Remove deprecated methods from DataValidation
Remove deprecated methods from PrintPageSetup
Convert AutoFilter to Serialisable and extend support for filters
Add support for SortState
Removed use_iterators keyword when loading workbooks. Use read_only instead.
Removed optimized_write keyword for new workbooks. Use write_only instead.
Improve print title support
Add print area support
New implementation of defined names
New implementation of page headers and footers
Add support for Python’s NaN
Added iter_cols method for worksheets
ws.rows and ws.columns now always return generators and start at the top of the worksheet
Add a values property for worksheets
Default column width changed to 8 as per the specification

Deprecations

Cell anchor method
Worksheet point_pos method
Worksheet add_print_title method
Worksheet HeaderFooter attribute, replaced by individual ones
Flatten function for cells
Workbook get_named_range, add_named_range, remove_named_range, get_sheet_names, get_sheet_by_name
Comment text attribute
Use of range strings deprecated for ws.iter_rows()
Use of coordinates deprecated for ws.cell()
Deprecate .copy() method for StyleProxy objects

Bug fixes

#152 Hyperlinks lost when reading files
#171 Add function for copying worksheets
#386 Cells with inline strings considered empty
#397 Add support for ranges of rows and columns
#446 Workbook with definedNames corrupted by openpyxl
#481 “safe” reserved ranges are not read from workbooks
#501 Discarding named ranges can lead to corrupt files
#574 Exception raised when using the class method to parse Relationships
#579 Crashes when reading defined names with no content
#597 Cannot read worksheets without coordinates
#617 Customised named styles not correctly preserved

2.3.5 (2016-04-11)

Bug fixes

#618 Comments not written in write-only mode

2.3.4 (2016-03-16)

Bug fixes

#594 Content types might be missing when keeping VBA
#599 Cells with only one cell look empty
#607 Serialise NaN as ‘’

Minor changes

Preserve the order of external references because formualae use numerical indices.
Typo corrected in cell unit tests (PR 118)

2.3.3 (2016-01-18)

Bug fixes

#540 Cannot read merged cells in read-only mode
#565 Empty styled text blocks cannot be parsed
#569 Issue warning rather than raise Exception raised for unparsable definedNames
#575 Cannot open workbooks with embdedded OLE files
#584 Exception when saving borders with attributes

Minor changes

PR 103 Documentation about chart scaling and axis limits
Raise an exception when trying to copy cells from other workbooks.

2.3.2 (2015-12-07)

Bug fixes

#554 Cannot add comments to a worksheet when preserving VBA
#561 Exception when reading phonetic text
#562 DARKBLUE is the same as RED
#563 Minimum for row and column indexes not enforced

Minor changes

PR 97 One VML file per worksheet.
PR 96 Correct descriptor for CharacterProperties.rtl
#498 Metadata is not essential to use the package.

2.3.1 (2015-11-20)

Bug fixes

#534 Exception when using columns property in read-only mode.
#536 Incorrectly handle comments from Google Docs files.
#539 Flexible value types for conditional formatting.
#542 Missing content types for images.
#543 Make sure images fit containers on all OSes.
#544 Gracefully handle missing cell styles.
#546 ExternalLink duplicated when editing a file with macros.
#548 Exception with non-ASCII worksheet titles
#551 Combine multiple LineCharts

Minor changes

PR 88 Fix page margins in parser.

2.3.0 (2015-10-20)

Major changes

Support the creation of chartsheets

Bug fixes

#532 Problems when cells have no style in read-only mode.

Minor changes

PR 79 Make PlotArea editable in charts
Use graphicalProperties as the alias for spPr

2.3.0-b2 (2015-09-04)

Bug fixes

#488 Support hashValue attribute for sheetProtection
#493 Warn that unsupported extensions will be dropped
#494 Cells with exponentials causes a ValueError
#497 Scatter charts are broken
#499 Inconsistent conversion of localised datetimes
#500 Adding images leads to unreadable files
#509 Improve handling of sheet names
#515 Non-ascii titles have bad repr
#516 Ignore unassigned worksheets

Minor changes

Worksheets are now iterable by row.
Assign individual cell styles only if they are explicitly set.

2.3.0-b1 (2015-06-29)

Major changes

Shift to using (row, column) indexing for cells. Cells will at some point lose coordinates.
New implementation of conditional formatting. Databars now partially preserved.
et_xmlfile is now a standalone library.
Complete rewrite of chart package
Include a tokenizer for fomulae to be able to adjust cell references in them. PR 63

Minor changes

Read-only and write-only worksheets renamed.
Write-only workbooks support charts and images.
PR76 Prevent comment images from conflicting with VBA

Bug fixes

#81 Support stacked bar charts
#88 Charts break hyperlinks
#97 Pie and combination charts
#99 Quote worksheet names in chart references
#150 Support additional chart options
#172 Support surface charts
#381 Preserve named styles
#470 Adding more than 10 worksheets with the same name leads to duplicates sheet names and an invalid file

2.2.6 (unreleased)

Bug fixes

#502 Unexpected keyword “mergeCell”
#503 tostring missing in dump_worksheet
#506 Non-ASCII formulae cannot be parsed
#508 Cannot save files with coloured tabs
Regex for ignoring named ranges is wrong (character class instead of prefix)

2.2.5 (2015-06-29)

Bug fixes

#463 Unexpected keyword “mergeCell”
#484 Unusual dimensions breaks read-only mode
#485 Move return out of loop

2.2.4 (2015-06-17)

Bug fixes

#464 Cannot use images when preserving macros
#465 ws.cell() returns an empty cell on read-only workbooks
#467 Cannot edit a file with ActiveX components
#471 Sheet properties elements must be in order
#475 Do not redefine class __slots__ in subclasses
#477 Write-only support for SheetProtection
#478 Write-only support for DataValidation
Improved regex when checking for datetime formats

2.2.3 (2015-05-26)

Bug fixes

#451 fitToPage setting ignored
#458 Trailing spaces lost when saving files.
#459 setup.py install fails with Python 3
#462 Vestigial rId conflicts when adding charts, images or comments
#455 Enable Zip64 extensions for all versions of Python

2.2.2 (2015-04-28)

Bug fixes

#447 Uppercase datetime number formats not recognised.
#453 Borders broken in shared_styles.

2.2.1 (2015-03-31)

Minor changes

PR54 Improved precision on times near midnight.
PR55 Preserve macro buttons

Bug fixes

#429 Workbook fails to load because header and footers cannot be parsed.
#433 File-like object with encoding=None
#434 SyntaxError when writing page breaks.
#436 Read-only mode duplicates empty rows.
#437 Cell.offset raises an exception
#438 Cells with pivotButton and quotePrefix styles cannot be read
#440 Error when customised versions of builtin formats
#442 Exception raised when a fill element contains no children
#444 Styles cannot be copied

2.2.0 (2015-03-11)

Bug fixes

#415 Improved exception when passing in invalid in memory files.

2.2.0-b1 (2015-02-18)

Major changes

Cell styles deprecated, use formatting objects (fonts, fills, borders, etc.) directly instead
Charts will no longer try and calculate axes by default
Support for template file types - PR21
Moved ancillary functions and classes into utils package - single place of reference
PR 34 Fully support page setup
Removed SAX-based XML Generator. Special thanks to Elias Rabel for implementing xmlfile for xml.etree
Preserve sheet view definitions in existing files (frozen panes, zoom, etc.)

Bug fixes

#103 Set the zoom of a sheet
#199 Hide gridlines
#215 Preserve sheet view setings
#262 Set the zoom of a sheet
#392 Worksheet header not read
#387 Cannot read files without styles.xml
#410 Exception when preserving whitespace in strings
#417 Cannot create print titles
#420 Rename confusing constants
#422 Preserve color index in a workbook if it differs from the standard

Minor changes

Use a 2-way cache for column index lookups
Clean up tests in cells
PR 40 Support frozen panes and autofilter in write-only mode
Use ws.calculate_dimension(force=True) in read-only mode for unsized worksheets

2.1.5 (2015-02-18)

Bug fixes

#403 Cannot add comments in write-only mode
#401 Creating cells in an empty row raises an exception
#408 from_excel adjustment for Julian dates 1 < x < 60
#409 refersTo is an optional attribute

Minor changes

Allow cells to be appended to standard worksheets for code compatibility with write-only mode.

2.1.4 (2014-12-16)

Bug fixes

#393 IterableWorksheet skips empty cells in rows
#394 Date format is applied to all columns (while only first column contains dates)
#395 temporary files not cleaned properly
#396 Cannot write “=” in Excel file
#398 Cannot write empty rows in write-only mode with LXML installed

Minor changes

Add relation namespace to root element for compatibility with iWork
Serialize comments relation in LXML-backend

2.1.3 (2014-12-09)

Minor changes

PR 31 Correct tutorial
PR 32 See #380
PR 37 Bind worksheet to ColumnDimension objects

Bug fixes

#379 ws.append() doesn’t set RowDimension Correctly
#380 empty cells formatted as datetimes raise exceptions

2.1.2 (2014-10-23)

Minor changes

PR 30 Fix regex for positive exponentials
PR 28 Fix for #328

Bug fixes

#120, #168 defined names with formulae raise exceptions, #292
#328 ValueError when reading cells with hyperlinks
#369 IndexError when reading definedNames
#372 number_format not consistently applied from styles

2.1.1 (2014-10-08)

Minor changes

PR 20 Support different workbook code names
Allow auto_axis keyword for ScatterCharts

Bug fixes

#332 Fills lost in ConditionalFormatting
#360 Support value=”none” in attributes
#363 Support undocumented value for textRotation
#364 Preserve integers in read-only mode
#366 Complete read support for DataValidation
#367 Iterate over unsized worksheets

2.1.0 (2014-09-21)

Major changes

“read_only” and “write_only” new flags for workbooks
Support for reading and writing worksheet protection
Support for reading hidden rows
Cells now manage their styles directly
ColumnDimension and RowDimension object manage their styles directly
Use xmlfile for writing worksheets if available - around 3 times faster
Datavalidation now part of the worksheet package

Minor changes

Number formats are now just strings
Strings can be used for RGB and aRGB colours for Fonts, Fills and Borders
Create all style tags in a single pass
Performance improvement when appending rows
Cleaner conversion of Python to Excel values
PR6 reserve formatting for empty rows
standard worksheets can append from ranges and generators

Bug fixes

#153 Cannot read visibility of sheets and rows
#181 No content type for worksheets
241 Cannot read sheets with inline strings
322 1-indexing for merged cells
339 Correctly handle removal of cell protection
341 Cells with formulae do not round-trip
347 Read DataValidations
353 Support Defined Named Ranges to external workbooks

2.0.5 (2014-08-08)

Bug fixes

#348 incorrect casting of boolean strings
#349 roundtripping cells with formulae

2.0.4 (2014-06-25)

Minor changes

Add a sample file illustrating colours

Bug fixes

#331 DARKYELLOW was incorrect
Correctly handle extend attribute for fonts

2.0.3 (2014-05-22)

Minor changes

Updated docs

Bug fixes

#319 Cannot load Workbooks with vertAlign styling for fonts

2.0.2 (2014-05-13)

2.0.1 (2014-05-13) brown bag

2.0.0 (2014-05-13) brown bag

Major changes

This is last release that will support Python 3.2
Cells are referenced with 1-indexing: A1 == cell(row=1, column=1)
Use jdcal for more efficient and reliable conversion of datetimes
Significant speed up when reading files
Merged immutable styles
Type inference is disabled by default
RawCell renamed ReadOnlyCell
ReadOnlyCell.internal_value and ReadOnlyCell.value now behave the same as Cell
Provide no size information on unsized worksheets
Lower memory footprint when reading files

Minor changes

All tests converted to pytest
Pyflakes used for static code analysis
Sample code in the documentation is automatically run
Support GradientFills
BaseColWidth set

Pull requests

#70 Add filterColumn, sortCondition support to AutoFilter
#80 Reorder worksheets parts
#82 Update API for conditional formatting
#87 Add support for writing Protection styles, others
#89 Better handling of content types when preserving macros

Bug fixes

#46 ColumnDimension style error
#86 reader.worksheet.fast_parse sets booleans to integers
#98 Auto sizing column widths does not work
#137 Workbooks with chartsheets
#185 Invalid PageMargins
#230 Using v in cells creates invalid files
#243 - IndexError when loading workbook
#263 - Forded conversion of line breaks
#267 - Raise exceptions when passed invalid types
#270 - Cannot open files which use non-standard sheet names or reference Ids
#269 - Handling unsized worksheets in IterableWorksheet
#270 - Handling Workbooks with non-standard references
#275 - Handling auto filters where there are only custom filters
#277 - Harmonise chart and cell coordinates
#280- Explicit exception raising for invalid characters
#286 - Optimized writer can not handle a datetime.time value
#296 - Cell coordinates not consistent with documentation
#300 - Missing column width causes load_workbook() exception
#304 - Handling Workbooks with absolute paths for worksheets (from Sharepoint)

1.8.6 (2014-05-05)

Minor changes

Fixed typo for import Elementtree

Bugfixes

#279 Incorrect path for comments files on Windows

1.8.5 (2014-03-25)

Minor changes

The ‘=’ string is no longer interpreted as a formula
When a client writes empty xml tags for cells (e.g. <c r=’A1’></c>), reader will not crash

1.8.4 (2014-02-25)

Bugfixes

#260 better handling of undimensioned worksheets
#268 non-ascii in formualae
#282 correct implementation of register_namepsace for Python 2.6

1.8.3 (2014-02-09)

Major changes

Always parse using cElementTree

Minor changes

Slight improvements in memory use when parsing

#256 - error when trying to read comments with optimised reader
#260 - unsized worksheets
#264 - only numeric cells can be dates

1.8.2 (2014-01-17)

#247 - iterable worksheets open too many files
#252 - improved handling of lxml
#253 - better handling of unique sheetnames

1.8.1 (2014-01-14)

#246

1.8.0 (2014-01-08)

Compatibility

Support for Python 2.5 dropped.

Major changes

Support conditional formatting
Support lxml as backend
Support reading and writing comments
pytest as testrunner now required
Improvements in charts: new types, more reliable

Minor changes

load_workbook now accepts data_only to allow extracting values only from formulae. Default is false.
Images can now be anchored to cells
Docs updated
Provisional benchmarking
Added convenience methods for accessing worksheets and cells by key

1.7.0 (2013-10-31)

Major changes

Drops support for Python < 2.5 and last version to support Python 2.5

Compatibility

Tests run on Python 2.5, 2.6, 2.7, 3.2, 3.3

Merged pull requests

27 Include more metadata
41 Able to read files with chart sheets
45 Configurable Worksheet classes
3 Correct serialisation of Decimal
36 Preserve VBA macros when reading files
44 Handle empty oddheader and oddFooter tags
43 Fixed issue that the reader never set the active sheet
33 Reader set value and type explicitly and TYPE_ERROR checking
22 added page breaks, fixed formula serialization
39 Fix Python 2.6 compatibility
47 Improvements in styling

Known bugfixes

Miscellaneous

Performance improvements in optimised writer

Docs updated