How to Convert all Keys of Dictionary into Lower Case ?

In case you are looking for how to convert all keys of dictionary into lower case : Python .Here ( Data Science Learner ) are some code tweaks with output and sample python code .

1. Convert all keys of dictionary into lower case –

my_dict = {'KEY1': "Hello", 'Key2': "World"} 
new_dict = dict((k.lower(), v) for k, v in my_dict .items()) 
print(new_dict

Output –

2. Convert all values of dictionary into lower case –

my_dict = {'KEY1': "Hello", 'Key2': "World"} 
new_dict = dict((k, v.lower()) for k, v in my_dict .items()) 
print(new_dict)

Output –

{‘KEY1’: ‘hello’, ‘Key2’: ‘world’}

3.How to change keys and values of dictionary into upper case ?

In the same way , If you need to change the case of a dictionary to upper case , Use upper() function in the place of lower . For example –

my_dict = {'KEY1': "Hello", 'Key2': "World"} 
new_dict = dict((k.upper(), v.upper()) for k, v in my_dict .items()) 
print(new_dict)

Output –

{‘KEY1’: ‘HELLO’, ‘KEY2’: ‘WORLD’}

Python Dictionary is inbuilt data structures with Python. We widely use this data structure into so many practical scenarios.

Conclusion –

Dictionary is one of the most rapidly used data structure in python . In General , We need to compare keys and values of dictionaries with some variable. This creates a huge need of the above operations . The upper() and lower() function convert the string into different cases on the basis of their name . Both functions are system define in Python Language . In case you need to know more about string operations in Python , Go for the official documentation . These small tricks in Python speed up our coding and implementation time. I strongly recommend to keep a notes for such tricks .

If you have anything to add in this topic, Please comment below in the comment box. I hope this article must have solved your issue. If you are still struggling, Please let us know.

Thanks 

Data  Science Learner Team

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