#30 Python Tutorial for Beginners | Copying an Array in Python
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In this lecture we will see:
Addition of values in an array
Different functions that can be performed on arrays
What is Aliasing in python?
Different ways of copying an array
#1
We can add any value in each element of an array.
We can also add values of two arrays.
The addition of two arrays is known as Vectorized Operation.
We can also find the values of each element of an array of mathematical operations such as sin, cos, tan, log, sqrt etc.
Sum of every element of an array can also be calculated by using the sum() function.
Minimum value can also be get from an array through the min() function.
Maximum value can be get from an array by using the max() function.
Unique elements from an array and the sorted array can also be get.
Concatenation of two arrays can also be performed by using the concatenate function. This function combines two arrays.
#2
Two variables can be pointed towards a single array. It means both variables are pointing to the same memory address where the array is stored.
In Python, Aliasing happens whenever one variable's value is assigned to another variable.
view() is a function that helps to create a new array at a new location. It means arrays should be present at the different memory addresses.
By using the view() functions, two variables will point towards two different arrays.
#3
In python, two copying techniques are available i.e.,
1. Shallow Copy
2. Deep Copy
In shallow copy, it will copy elements but it means both arrays are dependent on each other.
In shallow copy, if we update an element in one array then the changes would also be reflected in another array.
In a deep copy, two different arrays are not linked with each other in any way.
In a deep copy, we use the function known as a copy() instead of using the view() function.
copy() function provides a deep copy of an array.
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