pandas.DataFrame.add_prefix() Function with example in python
pandas.DataFrame.add_prefix(): This function prefix labels with string prefix.
Synatx: DataFrame.add_prefix(prefix)
For Series, the row labels are prefixed. For DataFrame, the column labels are prefixed.
Parameters:
prefix : str
The string to add before each label.
Returns:
Series or DataFrame
New Series or DataFrame with updated labels.
import pandas as pd
df = pd.DataFrame({'a': [1, 2, 2], 'b': [30, 40, 50]})
print(df.add_prefix('test'))
Output:
testa testb 0 1 30 1 2 40 2 2 50
