How to create list of dictionary in Python
In this article, we are going to discuss ways in which we can create a list of dictionaries in Python.
A list of dictionaries means, the dictionary is present as an element in the list.
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Syntax:
[{‘key’:element1,’key’:element2,……, ‘key’:element n}]
Example: Python code to create a list of dictionary for students data
Python3
# create a list of dictionary with student# id as key and name as valuedata = [{7058: 'sravan', 7059: 'jyothika', 7072: 'harsha', 7075: 'deepika'}] # display datadata |
Output:
[{7058: ‘sravan’, 7059: ‘jyothika’, 7072: ‘harsha’, 7075: ‘deepika’}]
We can access by using index
Syntax:
data[index][key]
where index is the dictionary index and the key is the dictionary key-value
Example: Python code to access keys via index
Python3
# create a list of dictionary with student # id as key and name as valuedata = [{7058: 'sravan', 7059: 'jyothika', 7072: 'harsha', 7075: 'deepika'}] # display data of key 7058print(data[0][7058]) # display data of key 7059print(data[0][7059]) # display data of key 7072print(data[0][7072]) # display data of key 7075print(data[0][7075]) |
Output:
sravan jyothika harsha deepika
List of multiple dictionaries
This is similar to the above approach, except that multiple dictionaries are being passed to the list at once.
Example: Python program to create a list of multiple dictionaries
Python3
# create a list of dictionaries with # student id as key and name as valuedata = [{7058: 'sravan', 7059: 'jyothika', 7072: 'harsha', 7075: 'deepika'}, {7051: 'fathima', 7089: 'mounika', 7012: 'thanmai', 7115: 'vasavi'}, {9001: 'ojaswi', 1289: 'daksha', 7045: 'parvathi', 9815: 'bhavani'}] print(data) |
Output:
[{7058: ‘sravan’, 7059: ‘jyothika’, 7072: ‘harsha’, 7075: ‘deepika’}, {7051: ‘fathima’, 7089: ‘mounika’, 7012: ‘thanmai’, 7115: ‘vasavi’}, {9001: ‘ojaswi’, 1289: ‘daksha’, 7045: ‘parvathi’, 9815: ‘bhavani’}]
It can again access all the elements using index.
Example: Python code to access elements based on index and key
Python3
# create a list of dictionaries with # student id as key and name as valuedata = [{7058: 'sravan', 7059: 'jyothika', 7072: 'harsha', 7075: 'deepika'}, {7051: 'fathima', 7089: 'mounika', 7012: 'thanmai', 7115: 'vasavi'}, {9001: 'ojaswi', 1289: 'daksha', 7045: 'parvathi', 9815: 'bhavani'}] # access third dictionary wih key 9001print(data[2][9001]) # access second dictionary wih key 7012print(data[1][7012]) # access second dictionary wih key 7115print(data[1][7115]) |
Output:
ojaswi thanmai vasavi
