Copy question in Python

Question

Some notes on copy problems

Case 1
a=b
If a&b are int or str it doesn’t matter
If a&b are list, DataFrame or similar objects, they would refer to the same object all the time
Any change in a would change b, vice versa

Case 2
b=a.copy()
This is a shallow copy
a&b are different objects, but they share elements
Adding elements to b won’t change a
But any change in elements in a would change b, vice versa

Case 3
Create a deep copy
b=a.copy(deep=True) #as in Pandas
a&b are different objects. They don’t share elements.
Any change on a won’t change b

Answer 1

Basically, these are all the behavior of python programming language regarding different types of cases in copying list. I think you need an explanation about that.
There are some articles present on the internet which you can check them out. Here is one for you:)
https://www-geeksforgeeks-org.cdn.ampproject.org/v/s/www.geeksforgeeks.org/python-cloning-copying-list/amp/?amp_js_v=a2&amp_gsa=1&usqp=mq331AQCCAE%3D#referrer=https%3A%2F%2Fwww.google.com&amp_tf=From%20%251%24s&ampshare=https%3A%2F%2Fwww.geeksforgeeks.org%2Fpython-cloning-copying-list%2F