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ENH: ExcelWriter append or create mode

Enhancement

IO Excelread_excel, to_excelread_excel, to_excel

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#61634 In pandas-dev/pandas;

· flori-ko opened on Jun 11, 2025

ENH: Columns formatted as "Text" in Excel are read as numbers

Enhancement

IO Excelread_excel, to_excelread_excel, to_excel

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#61539 In pandas-dev/pandas;

· pranay-sa opened on Jun 3, 2025

ENH: adding a filter (and bold) to header when writing to excel

Enhancement

IO Excelread_excel, to_excelread_excel, to_excel

Status: Open.

#61194 In pandas-dev/pandas;

· simonaubertbd opened on Mar 28, 2025

BUG: Datatypes not preserved on pd.read_excel

Bug

IO Excelread_excel, to_excelread_excel, to_excel

Status: Open.

#60088 In pandas-dev/pandas;

· vignesh14052002 opened on Oct 23, 2024

BUG: When using to_excel() columns with Date Format are converting in Excel to 'General Format.

Bug

IO Excelread_excel, to_excelread_excel, to_excel

Needs InfoClarification about behavior needed to assess issueClarification about behavior needed to assess issue

Status: Open.

#59882 In pandas-dev/pandas;

· ArunPesari2 opened on Sep 24, 2024

ENH: Add a clear option to interpret strings as Pandas dtypes specifically.

Enhancement

IO Excelread_excel, to_excelread_excel, to_excel

Needs InfoClarification about behavior needed to assess issueClarification about behavior needed to assess issue

StringsString extension data type and string dataString extension data type and string data

Status: Open.

#59777 In pandas-dev/pandas;

· vitkosbence opened on Sep 11, 2024

BUG: Difference between calamine and openpyxl readers - columns with mixed data types

Bug

IO Excelread_excel, to_excelread_excel, to_excel

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#59186 In pandas-dev/pandas;

· asishm opened on Jul 5, 2024

BUG: read_excel multiindex head with holes

Bug

IO Excelread_excel, to_excelread_excel, to_excel

MultiIndex

Status: Open.

#58898 In pandas-dev/pandas;

· PL-SalvadorFandino opened on Jun 2, 2024

DEPR: ExcelFile.parse

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

IO Excelread_excel, to_excelread_excel, to_excel

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

Status: Open.

#58247 In pandas-dev/pandas;

· rhshadrach opened on Apr 13, 2024

ENH: styler.to_excel to support excel notes as implementation of tooltips

Enhancement

IO Excelread_excel, to_excelread_excel, to_excel

Stylerconditional formatting using DataFrame.styleconditional formatting using DataFrame.style

Status: Open.

#58070 In pandas-dev/pandas;

· sdementen opened on Mar 29, 2024

BUG: Inconsistent stream processing between read_excel and read_csv

Bug

IO Excelread_excel, to_excelread_excel, to_excel

Status: Open.

#56959 In pandas-dev/pandas;

· jf2 opened on Jan 19, 2024

DEPR: Deprecate xlrd and pyxlsb excel engines

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

IO Excelread_excel, to_excelread_excel, to_excel

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

Status: Open.

#56542 In pandas-dev/pandas;

· phofl opened on Dec 17, 2023