Hello I was trying to count words in a text but there’s a problem.
If I write code like
def popular_words(text:str, list:list)-> dict:
text=text.lower()
splited_text=text.split()
answer={}
for word in list:
answer[word]=splited_text.count(word)
return answer
print(popular_words('''
When I was One
I had just begun
When I was Two
I was nearly new''', ['i', 'was', 'three', 'near']))
‘
the result is
{‘i’: 4, ‘was’: 3, ‘three’: 0, ‘near’: 0}
It’s good, but if I write code without splitting the text like
def popular_words(text:str, list:list)-> dict:
text=text.lower()
answer={}
for word in list:
answer[word]=text.count(word)
return answer
print(popular_words('''
When I was One
I had just begun
When I was Two
I was nearly new''', ['i', 'was', 'three', 'near']))
‘
the result is
{‘i’: 4, ‘was’: 3, ‘three’: 0, ‘near’: 1}
so there’s an error in counting ‘near’.
I think it’s because second code also count ‘nearly’ for ‘near’
But I can’t understand the results are different between first and second code.
Could you guys explain the reason the result is different?
>Solution :
Version without split counts substrings in a string. Thus, "near" is found. When you split, you are now looking for strings in a list – meaning match has to be exact, and "near" does not match "nearly" string that is in a list.
As @MattDMo says, using list (or any other keyword or built-in) as a variable name is a bad idea.