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Pandas DataFrame rsub() Method

❮ DataFrame Reference


Subtract each value in the DataFrame from 15:

import pandas as pd

data = {
  "points": [100, 120, 114],
  "total": [350, 340, 402]

df = pd.DataFrame(data)

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Definition and Usage

The rsub() method subtracts each value in the DataFrame from a specified value.

This method is called reverse sub, and is similar to the sub() method, but instead of calculating 100 - 15 it calculates 15 - 100.

The specified value must be an object with a data type that fits the original DataFrame. It can be a constant number like the one in the example, or it can be a list-like object like a list [15, 20] or a tuple {"points": 380, "total": 22}, or a  Pandas Series or another DataFrame, that fits with the original DataFrame.


dataframe.rsub(other, axis, level, fill_value)


Parameter Description
other Required. A number, list of numbers, or another object with a data structure that fits with the original DataFrame.
axis Optional, A definition that decides whether to compare by index or columns.
0 or 'index' means compare by index.
1 or 'columns' means compare by columns
level Optional. A number or label that indicates where to compare.
fill_value Optional. A number, or None. Specifies what to do with NaN values before subtracting.

Return Value

A DataFrame with the result.

❮ DataFrame Reference