Introduction

Splitting a dictionary by multiple values and one of the keys is a useful way to organize data. It allows you to quickly and easily access specific information from a large set of data. This technique can be used to create subsets of data based on certain criteria, such as a specific key or multiple values. By splitting a dictionary by multiple values and one of the keys, you can quickly and easily access the information you need.

Solution

Assuming you have a dictionary like this:

d = {‘a’: [1, 2, 3], ‘b’: [4, 5, 6], ‘c’: [7, 8, 9]}

You can use a dictionary comprehension to split the dictionary into multiple dictionaries based on the values of one of the keys:

d1 = {k: v for k, v in d.items() if v[0] == 1 or v[0] == 4 or v[0] == 7}
d2 = {k: v for k, v in d.items() if v[0] == 2 or v[0] == 5 or v[0] == 8}
d3 = {k: v for k, v in d.items() if v[0] == 3 or v[0] == 6 or v[0] == 9}

print(d1) # {‘a’: [1, 2, 3], ‘b’: [4, 5, 6]}
print(d2) # {‘a’: [2, 3], ‘b’: [5, 6], ‘c’: [8, 9]}
print(d3) # {‘a’: [3], ‘b’: [6], ‘c’: [9]}

exploded = [(key, value) for key, values in data.items() for value in values]

[('id', 123), ('id', 456), ('id', 546), ('id', 311), 
 ('info', 'info1'), ('info', 'info2'), ('info', 'info3')]

Splitting Dict by Multi Values and One of the Keys

Splitting a dictionary by multiple values and one of the keys can be a tricky task. Fortunately, Python provides a number of ways to accomplish this. In this article, we’ll look at three different methods for splitting a dictionary by multiple values and one of the keys.

Method 1: Using the Dictionary Comprehension

The first method we’ll look at is using the dictionary comprehension. This method allows us to create a new dictionary from an existing one, based on certain criteria. To use this method, we’ll need to define a function that takes in the dictionary and returns a boolean value. This boolean value will determine whether or not the key-value pair should be included in the new dictionary.

For example, let’s say we have a dictionary with the following key-value pairs:

my_dict = {
    'name': 'John',
    'age': 25,
    'gender': 'male'
}

We can use the dictionary comprehension to create a new dictionary that only includes the key-value pairs where the value is equal to ‘male’:

male_dict = {k:v for (k,v) in my_dict.items() if v == 'male'}

This will create a new dictionary with the following key-value pairs:

male_dict = {
    'gender': 'male'
}

Method 2: Using the Filter Function

The second method we’ll look at is using the filter function. This method allows us to filter a dictionary based on a certain criteria. To use this method, we’ll need to define a function that takes in the dictionary and returns a boolean value. This boolean value will determine whether or not the key-value pair should be included in the new dictionary.

For example, let’s say we have a dictionary with the following key-value pairs:

my_dict = {
    'name': 'John',
    'age': 25,
    'gender': 'male'
}

We can use the filter function to create a new dictionary that only includes the key-value pairs where the value is equal to ‘male’:

male_dict = dict(filter(lambda item: item[1] == 'male', my_dict.items()))

This will create a new dictionary with the following key-value pairs:

male_dict = {
    'gender': 'male'
}

Method 3: Using the List Comprehension

The third method we’ll look at is using the list comprehension. This method allows us to create a new list from an existing one, based on certain criteria. To use this method, we’ll need to define a function that takes in the list and returns a boolean value. This boolean value will determine whether or not the item should be included in the new list.

For example, let’s say we have a list with the following items:

my_list = [
    ('name', 'John'),
    ('age', 25),
    ('gender', 'male')
]

We can use the list comprehension to create a new list that only includes the items where the second value is equal to ‘male’:

male_list = [item for item in my_list if item[1] == 'male']

This will create a new list with the following items:

male_list = [
    ('gender', 'male')
]

These are just three of the many ways to split a dictionary by multiple values and one of the keys. Depending on your specific needs, you may find one of these methods more suitable than the others.