Tag: Elements
Python : Count elements in a list that satisfy certain conditions
In this example we will discuss 4 different ways to count number of elements in a list that satisfy certain conditions. Suppose we have a list of numbers i.e. Advertisements # List of numbers listOfElems = [11, 22, 33, 45, 66, 77, 88, 99, 101] We want to count number of elements in the list …
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Check if all elements in a list are None in Python
In this article we will discuss different ways to check if a list contains only None or not. Suppose we have a list, Advertisements sample_list = [None, None, None, None] Now we want to confirm that all items in this list are None. There are different ways to do that. Let’s discuss them one by …
7 Ways to add all elements of list to set in python
In this article we will discuss 7 different ways to add all elements of a list to the set in python. Suppose we have a list and a set i.e. Advertisements # Set of numbers sample_set = {11, 12, 13, 14} # List of numbers list_of_num = [10, 11, 12, 13, 14, 15, 16] Now …
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Python Set: Remove single or multiple elements from a set?
In this article we will discuss different ways to remove single or multiple elements from a set in python. Remove a single element from a set Suppose we have a set of numbers in python, Advertisements # Create a set of numbers set_of_num = {1, 2, 11, 6, 7, 4, 5} print(‘Original Set: ‘) print(set_of_num) …
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Python: Remove all elements from set using clear() or difference_update() or discard()
In this article we will discuss different ways to remove all elements from a set in python. Remove all elements from a set using clear() function In python, the Set class provides a function clear() that can empty a set i.e. delete all elements from the set. For example, Advertisements # Create a Set of …
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Python: Remove elements from a list while iterating
This article will discuss different ways to delete elements from a list while iterating over it. Table of Contents Remove elements from list in for loop Remove elements from a list while iterating using list comprehension Remove elements from a list while iterating using filter() function Summary Remove elements from list in for loop Suppose …
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Python: Remove elements from list by value
This article will discuss different ways to remove first or all occurrences of an element from a list by value. Table of Contents Python: Remove the first occurrence of an element from a list by value Python: Remove element from a list by value if exist Python: Remove all occurrences of an element from a …
Python: Remove elements from list by index or indices
This article will discuss different ways to remove single or multiple elements from a list by the index positions. Table of Contents Python: Remove an element from a list by index using the pop() function Python: Remove an element from the list by index using del keyword Python: Remove an element from list by index …
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Count number of True elements in a NumPy Array in Python
In this article, we will discuss different ways to count True elements in a bool Numpy Array. Table of Contents Use count_nonzero() to count True elements in NumPy array. Use sum() to count True elements in a NumPy array. Use bincount() to count True elements in a NumPy array. Count True elements in 2D Array. …
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How to access List elements in Python?
This article explains how to access single or multiple elements from a list in Python. A list is a sequential data structure, and all the elements in the List are indexed. Therefore, we can access any element of the List by its index position. Also, the indexing starts from 0 in the List. Let’s understand …