Python If-Else Statement

Question

the objective is to extract from the text the sentences before the word Definition or indications

def extract(doc):

    if( len(doc) != 0 ):
        if ('Definition' in doc):
                sentence = doc.split('Definition')[0]  

        elif ('Definition' not in doc and 'indications' in doc):
                sentence = doc.split('indications')[0]

        return sentence 
    else :
        return doc

It return error : UnboundLocalError: local variable 'sentence' referenced before assignment

You have an `if` and an `elif`, so logically there could be an `else case` (but don't): in that case `sentence` hasn't been assigned — doctorlove, May 31 '22 at 13:23
here is the same issue resolved before. [UnboundLocalError](https://stackoverflow.com/a/10851939/8247037) — ucatbas, May 31 '22 at 13:33
Does this answer your question? [UnboundLocal Error onfile](https://stackoverflow.com/questions/25569994/unboundlocal-error-onfile) — Joooeey, May 31 '22 at 14:07

score 0 · Answer 1 · answered May 31 '22 at 14:01

You can try the below code.This is a simple method.we can just print the output just after the if and and elif statement.And we can also add an else statement to print if there is no word "Dosage" and "Contradictions" in the sentence.

def just_indication(doc):

if( len(doc) != 0 ):
    if ('Dosage' in doc):
            sentence = doc.split('Dosage')[0]  
            print(sentence)
    elif ('Dosage' not in doc and 'Contraindications' in doc):
            sentence = doc.split('Contraindications')[0]
            print(sentence)
     
    else:
         print("Error! word Dosage and Contraindications not present in doc")
    
else:
    print("doc empty")
           
just_indication("this is the sentence which has the word Contraindications in it")

Armand Marcelli · Answer 2 · 2022-05-31T13:24:24.293

-1

I think it's because you declare "sentence" in an if statment, try declar it right after your def, like this :

def just_indication(doc):
    sentence = ""
    if( len(doc) != 0 ):
        if ('Dosage' in doc):
                sentence = doc.split('Dosage')[0]  

        elif ('Dosage' not in doc and 'Contraindications' in doc):
                sentence = doc.split('Contraindications')[0]

        return sentence 
    else :
        return doc

edited May 31 '22 at 13:24

answered May 31 '22 at 13:23

Armand Marcelli

5
5

This will get rid of the error message but not correct the underlying problem. Worse than useless. – Mark Ransom May 31 '22 at 13:27
that's ok, that was said nicely and i'm not hurt at all ;-; @MarkRansom – Armand Marcelli May 31 '22 at 13:31

Python If-Else Statement

2 Answers2