Pandas DataFrame: append() function

Last update on August 19 2022 21:50:52 (UTC/GMT +8 hours)

DataFrame - append() function

The append() function is used to append rows of other to the end of caller, returning a new object.

Columns in other that are not in the caller are added as new columns.

Syntax:

DataFrame.append(self, other, ignore_index=False, verify_integrity=False, sort=None)

Parameters:

Name	Description	Type/Default Value	Required / Optional
other	The data to append.	DataFrame or Series/dict-like object, or list of these	Required
ignore_index	If True, do not use the index labels.	boolean Default Value: False	Required
verify_integrity	If True, raise ValueError on creating index with duplicates.	boolean Default Value: False	Required
sort	Sort columns if the columns of self and other are not aligned. The default sorting is deprecated and will change to not-sorting in a future version of pandas. Explicitly pass sort=True to silence the warning and sort. Explicitly pass sort=False to silence the warning and not sort.	boolean Default Value: None	Required

Returns: DataFrame

Notes:

If a list of dict/series is passed and the keys are all contained in the DataFrame's index, the order of the columns in the resulting DataFrame will be unchanged.

Example:

Download the Pandas DataFrame Notebooks from here.

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