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## Overview
Python is a high-level programming language that provides functionalities for several operations. The `array` module comes with various methods to manipulate array data structures.

The function **`array.tounicode()`** converts an array to an unicode string.

## Syntax

## Parameters
This function does not take in any arguments.

## Return value
This function returns a unicode `string`. The array passed must be of type `u`. Otherwise, the function returns a `ValueError`.

## Example

#import module
from array import array

#initialize array with unicode characters
array_one = array("u", ['a','b','c','d'])

#initialize array with unicode characters
array_two = array("u", ['e','f','g'])

print (array_one)
#convert array to unicode string
uni_one = array_one.tounicode()
print(uni_one)
print ("\n")

print (array_two)
#convert array to unicode string
uni_two = array_two.tounicode()
print(uni_two)

## Explanation
* **Line 2**: We import the array module.

* **Lines 5 and 8**: We initialize arrays with unicode characters.

* **Lines 12 and 18**: We convert arrays to unicode strings using `array.tounicode()`.

What is array.tounicode() in Python?

Transforms an array of type 'u' into a Unicode string; otherwise throws ValueError.