CODEWITHSUNDEEP
python
Jeansburger
Jeansburger

Reputation: 63

What is this method doing to this list?

Sorry for the title I have no idea how to phrase what the code I found is doing.

I have this code I am trying to understand and I ran into this

data = file_data[sent:sent + to_send]

What does this do to the file_data list, and what is the proper name for this type of method?

Upvotes: 1

Views: 61

Answers (1)

Ahasanul Haque
Ahasanul Haque

Reputation: 11134

It is actually slicing your file_data list. let's see it with an example, 

>>> file_data = list(range(10))
>>> file_data
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> sent =2 
>>> to_send = 3
>>> data = file_data[sent:sent + to_send] # file_data[2 : 2+3] => file_data[2 : 5]
>>> data
[2, 3, 4]

So, you will get a new list starting from the 2nd index till the (5-1)th -> 4th index.

Upvotes: 2

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