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# NumPy char | rstrip method

schedule Aug 12, 2023
Last updated
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PythonNumPy
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Numpy's `np.char.rstrip(~)` method takes as input an array of strings, and removes specified characters on the right side of each string.

Note that the original array is left intact, and a brand new copy of the array is returned.

# Parameters

1. `a` | `array-like`

The input array of strings.

2. `chars` | `str` or `unicode` | `optional`

The characters located on the right side of string that you want removed. Note that if `chars="ab"`, for instance, the characters that will be removed will be the combinations of the parameter value, that is, `"ab"` and `"ba"`.

# Return value

A new Numpy array with the specified characters residing at the right of the input strings removed.

# Examples

## Removing right whitespaces

``` np.char.rstrip(["Hello ", "World "]) array(['Hello', 'World'], dtype='<U8') ```

## Removing right custom characters

``` np.char.rstrip(["zba", "zab"], "ab") array(['z', 'z'], dtype='<U3') ```

Notice how both `"ba"` and `"ab"` were removed - it's the combinations of the specified characters that are removed.

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