The pop() method removes the item at the given index from the list and returns the removed item.
The syntax of the
pop``() method is:
pop()method takes a single argument (index).
pop() method returns the item present at the given index. This item is also removed from the list.
# programming languages list languages = ['Python', 'Java', 'C++', 'French', 'C'] # remove and return the 4th item return_value = languages.pop(3) print('Return Value:', return_value) # Updated List print('Updated List:', languages)
Return Value: French Updated List: ['Python', 'Java', 'C++', 'C']
Note: Index in Python starts from 0, not 1.
If you need to pop the 4th element, you need to pass 3 to the
# programming languages list languages = ['Python', 'Java', 'C++', 'Ruby', 'C'] # remove and return the last item print('When index is not passed:') print('Return Value:', languages.pop()) print('Updated List:', languages) # remove and return the last item print('\nWhen -1 is passed:') print('Return Value:', languages.pop(-1)) print('Updated List:', languages) # remove and return the third last item print('\nWhen -3 is passed:') print('Return Value:', languages.pop(-3)) print('Updated List:', languages)
When index is not passed: Return Value: C Updated List: ['Python', 'Java', 'C++', 'Ruby'] When -1 is passed: Return Value: Ruby Updated List: ['Python', 'Java', 'C++'] When -3 is passed: Return Value: Python Updated List: ['Java', 'C++']
If you need to remove the given item from the list, you can to use the remove() method.
Welcome to my Blog , In this article, you are going to learn the top 10 python tips and tricks.
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Welcome to my Blog, In this article, we will learn python lambda function, Map function, and filter function.
Lambda function in python: Lambda is a one line anonymous function and lambda takes any number of arguments but can only have one expression and python lambda syntax is
Syntax: x = lambda arguments : expression
Now i will show you some python lambda function examples:
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Python lists are a built-in type of data used to store items of any data type such as strings, integers, booleans, or any sort of objects, into a single variable.
Lists are created by enclosing one or multiple arbitrary comma-separated objects between square brackets.
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Magic Methods are the special methods which gives us the ability to access built in syntactical features such as ‘<’, ‘>’, ‘==’, ‘+’ etc…
You must have worked with such methods without knowing them to be as magic methods. Magic methods can be identified with their names which start with __ and ends with __ like init, call, str etc. These methods are also called Dunder Methods, because of their name starting and ending with Double Underscore (Dunder).
Now there are a number of such special methods, which you might have come across too, in Python. We will just be taking an example of a few of them to understand how they work and how we can use them.
class AnyClass: def __init__(): print("Init called on its own") obj = AnyClass()
The first example is _init, _and as the name suggests, it is used for initializing objects. Init method is called on its own, ie. whenever an object is created for the class, the init method is called on its own.
The output of the above code will be given below. Note how we did not call the init method and it got invoked as we created an object for class AnyClass.
Init called on its own
Let’s move to some other example, add gives us the ability to access the built in syntax feature of the character +. Let’s see how,
class AnyClass: def __init__(self, var): self.some_var = var def __add__(self, other_obj): print("Calling the add method") return self.some_var + other_obj.some_var obj1 = AnyClass(5) obj2 = AnyClass(6) obj1 + obj2
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Python Programming language makes everything easier and straightforward. Effective use of its built-in libraries can save a lot of time and help with faster submissions while doing Competitive Programming. Below are few such useful tricks that every Pythonist should have at their fingertips:
Below is the implementation to convert a given number into a list of digits:
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