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# Creating a copy of a NumPy array

NumPy

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*schedule*Jul 1, 2022

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**interactive map of data science**To create a copy of a Numpy array, use its `copy()`

method.

Suppose we have the following Numpy array:

```
x = np.array([1,2,3])x
array([1, 2, 3])
```

We can create a copy of `x`

using the `copy()`

method, like so:

```
y = x.copy()y
array([1, 2, 3])
```

Making modifications to `y`

would have no impact on `x`

. To demonstrate:

```
y[0] = 4y
array([4, 2, 3])
```

Here, we've modified the first value of `y`

. When we print `x`

, we see the following output:

```
x
array([1, 2, 3])
```

We see that `x`

has not been modified.

Published by Isshin Inada

Edited by 0 others

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