Tag: Dictionaries
Python : 6 Different ways to create Dictionaries
In this article, we will discuss different ways to create dictionary objects in python. What is a dictionary? dictionary is an associative container that contains the items in key/value pairs. For example, we if want to track the words and their frequency count in an article like, Advertisements “Hello” occurs 7 times “hi” occurs 10 times …
How to Merge two or more Dictionaries in Python ?
In this article we will discuss different ways to merge two or more dictionaries. Also, handle scenarios where we need to keep the values of common keys instead of overwriting them. Merge two dictionaries using dict.update() In Python, the Dictionary class provides a function update() i.e. Advertisements dict.update([other]) It accepts an another dictionary or an …
Python: Read CSV into a list of lists or tuples or dictionaries | Import csv to list
In this article we will discuss how to import a CSV into list. This list can be a list of lists, list of tuples or list of dictionaries. We will also use pandas module and cover scenarios for importing CSV contents to list with or without headers. Suppose we have a CSV file ‘students.csv’ and …
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Pandas: Create Dataframe from list of dictionaries
In this article we will discuss how to convert a list of dictionaries to a Dataframe in pandas. Also we will cover following examples, Create Dataframe from list of dictionaries with default indexes Create Dataframe from list of dictionaries with custom indexes Create Dataframe from list of dictionaries with changed order of columns Create Dataframe …
Python: Pretty print nested dictionaries – dict of dicts
In this article, we will discuss how to print a nested dictionary in a beautiful & readable format. Table of Contents Print a nested dictionary in pretty format using custom function. Print a nested dictionary in pretty format using json module. Print a nested dictionary in pretty format using pandas. A nested dictionary is a …
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Python: Check if value exists in list of dictionaries
In this article we will discuss different ways to check if a given value exists in a list of dictionaries or not. Table of Contents: Get all values in a list of dictionary & check if a given value exists. Iterate over all the dicts in a list of dicts & check if a given …
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Create CSV file from List of Dictionaries in Python
In this article, we will discuss how to create a csv file from a list of dictionaries in Python. Table Of Contents Introduction to Problem Solution Summary Introduction to Problem Suppose we have a list of dictionaries. Like this, Advertisements # List of dictionaries listOfDict = [ {‘Name’ : ‘Ritika’, ‘Age’ : 27, ‘City’ : …
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Get List of Unique Dictionaries in Python
This tutorial will discuss about unique ways to get list of unique dictionaries in Python. Suppose we have a list of dictionaries. Like this, # List of Dictionaries dictList = [{‘name’ : ‘Shuan’, ‘Age’ : 35, ‘city’ : ‘London’}, {‘name’ : ‘Vijay’, ‘Age’ : 49, ‘city’ : ‘Mumbai’}, {‘name’ : ‘Shuan’, ‘Age’ : 35, ‘city’ …
How to Initialize a Dictionary of Dictionaries in Python?
This tutorial will discuss about a unique way to initialize a dictionary of dictionaries in Python. Suppose we have two lists one is a list of keys and second is the inner keys. Like this, listOfKeys = [‘Atharv’, ‘Avisha’, ‘Kartik’, ‘Justin’] listOfInnerKeys = [‘Maths’, ‘Science’, ‘Social’, ‘English’] Now we want to initialise a dictionary of …
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