Numpy squeeze function in python numpy python tutorial

the `squeeze` function removes dimensions of size one from the shape of an array. for example, if you have a 3d array with a shape of `(1, 3, 1)`, using `squeeze` will convert it to a 1d array with a shape of `(3,)`.

#### syntax

- **a**: array_like
- the input array.

- **axis**: none or int or tuple of ints, optional
- if specified, this function will only remove the dimensions of size 1 from the specified axis. if an axis is not of size 1, an error will be raised.

#### return

- returns a new array with the same data as `a`, but with all or a specified subset of the dimensions of size 1 removed.

### code example

### explanation of the code

1. **creating a 3d array**: we first create a 3d array with a shape of `(1, 3, 1)`.
2. **using `squeeze`**: we apply the `squeeze` function to remove the single-dimensional entries, resulting in a 1d array.
3. **using the `axis` parameter**: in the second example, we create a 3d array with shape `(4, 1, 1)`, and we demonstrate how to use the `axis` parameter to squeeze a specific dimension.
4. **error handling**: we also show what happens when you try to squeeze an axis that is not of size 1, which raises a `valueerror`.

- when you want to simplify the shape of your arrays for easier manipulation.
- before performing operations that require specific dimensions.
- for visualizing data where single-dimensional axes do not add any information.

### conclusion

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