# NumPy empty()

The `empty()` method creates a new array of given shape and type, without initializing entries.

### Example

``````import numpy as np

# create an array of uninitialized values
array1 = np.empty(5)

print(array1)

# Output: [2.23196843e-316 0.00000000e+000 6.94042595e-310 6.94042589e-310 6.94042589e-310]``````

The resultant array has uninitialized or arbitrary data that remained in the current memory location.

## empty() Syntax

The syntax of `empty()` is:

``numpy.empty(shape, dtype = float, order = 'C', like = None)``

## empty() Arguments

The `empty()` method takes the following arguments:

• `shape` - desired new shape of the array (can be integer or tuple of integers)
• `dtype` (optional) - datatype of the returned array
• `order` (optional) - specifies the order in which the uninitialized values are filled
• `like` (optional)- reference object to create arrays that are not NumPy arrays

## empty() Return Value

The `empty()` method returns the array of given shape, order, and datatype filled with arbitrary data.

## Example 1: Create Array With empty()

``````import numpy as np

# create a float array of uninitialized entries
array1 = np.empty(5)
print('Float Array: ',array1)

# create an int array of arbitrary entries
array2 = np.empty(5, dtype = int)
print('Int Array: ',array2)``````

Output

```Float Array:  [7.37149303e-317 0.00000000e+000 9.06092203e-312 2.47218893e-253
1.55872313e-307]
Int Array:  [          14920068                  0      1833951035814
827817906506039296  16894426102696828]```

If unspecified, the default dtype is `float`.

## Example 2: Create ndArray With empty()

``````import numpy as np

# create a 2D array of uninitialized entries
array1 = np.empty((2, 3))

print(2D Array: \n',array1)``````

Output

```2D Array:
[[4.66087120e-310 0.00000000e+000 3.46735270e-320]
[8.49832615e-268 5.55753018e-263 6.93340407e-310]]```

The values inside the array are uninitialized values and they will differ every time.

## Using Optional Order Argument in empty()

The `order` argument specifies the order in which the uninitialized values are filled.

The order can be:

• `'C'` - elements are stored row-wise (default)
• `'F'` - elements are stored column-wise