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Initialize an Empty Dictionary in Python

  • Difficulty Level : Easy
  • Last Updated : 13 Nov, 2020

Dictionary in Python is an unordered collection of data values, used to store data values like a map, which unlike other Data Types that hold only a single value as an element, Dictionary holds key:value pair. Key-value is provided in the dictionary to make it more optimized. 

Now, Let’s see the different ways to create an Empty Dictionary.

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Method 1: Use of { } symbol.



We can create an empty dictionary object by giving no elements in curly brackets in the assignment statement

Code:

Python3




# Python3 code to demonstrate use of
# {} symbol to initialize dictionary
emptyDict = {}
 
# print dictionary
print(emptyDict)
 
# print length of dictionary
print("Length:", len(emptyDict))
 
# print type
print(type(emptyDict))
Output
{}
Length: 0
<class 'dict'>




Method 2: Use of dict() built-in function.

Empty dictionary is also created by dict() built-in function without any arguments.

Code:

Python3




# Python3 code to demonstrate use of 
# dict() built-in function to
# initialize dictionary
emptyDict = dict()
 
# print dictionary
print(emptyDict)
 
# print length of dictionary
print("Length:",len(emptyDict))
 
# print type
print(type(emptyDict))
Output
{}
Length: 0
<class 'dict'>







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