Python: have dictionary both upper and lower case?

Question

Hi, I'm trying to build a dictionary, however, it seems to be cap specific. If entered "ICH" it will return a result, if entered "ich" then it shows an error. How can it be both "ICH" and "ich"? I've tried to add .lower in input, but it doesnt seem to work.

ClinicalTerms={
"ICH" :"International Community of Harmonization",
"AE":"Adverse Event",
"SAE":"Severe Adverse Event",
}

print (ClinicalTerms.get(input("Enter your abbreviation: "), "Sorry, abbreviation not in dictionary"))

Answer 1

Here is what I would do (might be a bit over-complicated, but it works):

https://code.sololearn.com/cNbIkBsi39v9/?ref=app

Answer 2

Anna Does this work the same way as your code?

for key, value in ClinicalTerms.items():
if key.lower() == user_input:
print(value)
break
else:
print("Sorry, abbreviation not in dictionary")

Answer 3

I like the approach from a StackOverflow answer as implemented in this code:

https://code.sololearn.com/cz56k8XNmdU6/?ref=app

This approach extends the default Dictionary with a case insensitive version.

Answer 4

Terry did you use = and not == in that line? Then that may be the reason.

Answer 5

Diego Acero Yes, plus it's more compact and thumbs up-worthy 👌🤓 (I can't get used to the for... else syntax)

Answer 6

Anna touché! Some abbreviations do use lowercase--should have thought of that.

Answer 7

Also, isn't it better to turn user_input to upper once, than every key to lower?

Answer 8

Kishalaya Saha I thought the dictionary might get extended and not every key has to be all uppercase 🤔

Answer 9

@Kishalaya Saha

"Terry did you use = and not == in that line? Then that may be the reason."

arrrr ok thanks

Answer 10

Thanks Anna, I see, very interesting

Answer 11

Terry Did you try the solution I shared?

Answer 12

From Diego, is this what you had meant? Seems to receive error at if key.lower()=user_input:

ClinicalTerms={
"ICH" :"International Community of Harmonization",
"AE":"Adverse Event",
"SAE":"Severe Adverse Event",
}

user_input=input("Enter your abbreviation: ")

for key, value in ClinicalTerms.items():
if key.lower()=user_input:
print(value)
break
else:
("sorry")