Make Python Dictionary keys Case insensitive – CaseInsensitiveDict

Today, I found a cool thing in Python. Actually, this function is a part of requests module. Using CaseInsensitiveDict of requests module, we can easily make our dictionary to be case insensitive.

Let’s understand this through an example.

myDict = {
    "Name": "Saruk",
    "Working-at": "codespeedy",
    "Born-In": "India"
}
print(myDict["working-at"])

If we run this we will get an error like this:

KeyError: 'working-at'

The reason is simple. We are trying to find the key “working-at” but our actual key is “Working-at”. The case is different.

So now we are going to fix it by using CaseInsensitiveDict

from requests.structures import CaseInsensitiveDict
myDict = {
    "Name": "Saruk",
    "Working-at": "codespeedy",
    "Born-In": "India"
}
newDict =CaseInsensitiveDict(myDict)
print(newDict["working-at"])

Output:

codespeedy

You can see there is no error anymore.

I thought it will be worth sharing with you and if you remeber this, it can be really helpful while working in Python projects with large dictionaries.