CODEWITHSUNDEEP
python
Angel
Angel

Reputation: 31

'None' type error when importing function

I am trying to import the answer of a function. The function is this:

def flo(rate,length, interval, threshold):
    data = []          #to create an empty list 
    new  = [rate[i:i+ length] for i in range(0, len( rate)-len( rate) %  length ,  length)]      
    for i in range(len(new )):
            data.append('True')  
            print(data)
    return 


flo( rate,length, interval, threshold)

where I got the output:

[False]
[False, False]
[False, False, True]
[False, False, True, True]
[False, False, True, True, True]
[False, False, True, True, True, False]
[False, False, True, True, True, False, True]
[False, False, True, True, True, False, True, True]
[False, False, True, True, True, False, True, True, False]

Now I want to import this answer into another function. So I did:

import flow_rate  as flow

z = flow.flow_rate ( rate,  length, interval, threshold)    
print(z)

But my output is:

None

Am I doing something wrong?

Upvotes: 0

Views: 413

Answers (1)

user15801675
user15801675

Reputation:

You simply put a return statement. There is not variable after return, so None is getting returned. It is as good as the returnstatement is not present in the function.

So you need to return the data:

return data

Upvotes: 2

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