Multidimensional Lists are Lists within Lists. The left index as row number and right index as column number, for example list[r][c] Above, r is row number and c is column number. Let’s see an example. For multidimensional list 2x3 − list [2][3] Create a Multidimensional Python List Example In this example, we will learn how to create a Multidimensional List in Python. We will also iterate and print the array. # Create a Multi-Dimensional Python List mylist = [[2, 5], [10, 24, 68], [80]] print("Multidimensional List") for outList in mylist: print(outList) Output Multidimensional List ... Read More

The arrays in Python are ndarray objects. To create arrays in Python, use the Numpy library. Array is a container which can hold a fix number of items and these items should be of the same type. To work with arrays in Python, import the NumPy library. First, let us first install the Numpy library − pip install numpy Import the required Numpy library − import numpy as np Create an Array Example Let us now create an array.. The basic Numpy Array is created using an array() function in NumPy − import numpy as np # Create ... Read More

To remove more than one item from a list, we can use various ways as discussed in this article. Let’s say have the following input List − ["David", "Jacob", "Harry", "Mark", "Anthony", "Steve", "Chris"] Following is the output when multiple elements “David” and “Harry” are removed − ["Jacob", "Mark", "Anthony", "Steve", "Chris"] Remove multiple items from a List Example To remove multiple items from a List, use the del keyword. The del allows you to add the items you want to delete in a range using square brackets: # Creating a List mylist = ["David", "Jacob", "Harry", "Mark", ... Read More

To remove duplicates from a List in Python, we can use various ways as discussed in this article. Remove duplicates from a list using Dictionary Example In this example, we will remove duplicates from a list using OrderedDict − from collections import OrderedDict # Creating a List with duplicate items mylist = ["Jacob", "Harry", "Mark", "Anthony", "Harry", "Anthony"] # Displaying the List print("List = ", mylist) # Remove duplicates from a list using dictionary resList = OrderedDict.fromkeys(mylist) # Display the List after removing duplicates print("Updated List = ", list(resList)) Output List = ['Jacob', 'Harry', ... Read More

Python Sequences includes Strings, Lists, Tuples, etc. We can merge elements of a Python sequence using different ways. Let’s see some examples of iteration over a List in reverse order. Iterate in Reverse Order using while loop Example In this example, we have a List as a sequence and iterate it in reverse order using the while loop − # Creating a List mylist = ["Jacob", "Harry", "Mark", "Anthony"] # Displaying the List print("List = ", mylist) # Length - 1 i = len(mylist) - 1 # Iterate in reverse order print("Display the List in Reverse order ... Read More

Negative Indexing is used to in Python to begin slicing from the end of the string i.e. the last. Slicing in Python gets a sub-string from a string. The slicing range is set as parameters i.e. start, stop, and step. Syntax Let us see the syntax − #slicing from index start to index stop-1 arr[start:stop] # slicing from index start to the end arr[start:] # slicing from the beginning to index stop - 1 arr[:stop] # slicing from the index start to index stop, by skipping step arr[start:stop:step] If the values above are in negative, that ... Read More

First, we will see how to convert Tuple into a List in Python. Convert Tuple with Integer Elements into a List To convert Tuple to a List, use the list() method and set the Tuple to be converted as a parameter. Example Let’s see the example # Creating a Tuple mytuple = (20, 40, 60, 80, 100) # Displaying the Tuple print("Tuple = ", mytuple) # Length of the Tuple print("Tuple Length= ", len(mytuple)) # Tuple to list mylist = list(mytuple) # print list print("List = ", mylist) print("Type = ", type(mylist)) Output Tuple = ... Read More

To read or write a binary file, at first you need to understand the different file modes for Binary Files in Python − Mode Description rb Opens a file for reading only in binary format. The file pointer is placed at the beginning of the file. This is the default mode. rb+ Opens a file for both reading and writing in binary format. The file pointer placed at the beginning of the file. wb Opens a file for writing only in binary format. Overwrites the file if the file exists. If the ... Read More

In this article, we will learn the new features in Python 3.10, compared to 3.9. Let’s see the features − Parenthesized context managers Using enclosing parentheses for continuation across multiple lines in context managers is now supported. This allows formatting a long collection of context managers in multiple lines in a similar way as it was previously possible with import statements User-Defined Type Guards TypeGuard has been added to the typing module to annotate type guard functions and improve information provided to static type checkers during type narrowing. Enhanced error messages If you will get an error while running a ... Read More

To delete a file, use the remove() method in Python. Pass the name of the file to be deleted as an argument. Let us first create a file and read the content: We will display the contents of a text file. For that, let us first create a text file amit.txt with the following content − The file amit.txt is visible in the Project Directory − Display the contents of a text file Let us now read the contents of the above file # The file to be read with open("amit.txt", "r") as myfile: my_data ... Read More