Revisions to How slicing in Python works

Adding an example on how negative start/end are computed betters this answer.

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edited Jan 15, 2020 at 12:29

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I personally think about it like a for loop:

a[start:end:step]
# for(i = start; i < end; i += step)

Also, note that negative values for start and end are relative to the end of the list and computed in the example above by given_index + a.shape[0].

I personally think about it like a for loop:

a[start:end:step]
# for(i = start; i < end; i += step)

Also note that negative values for start and end are relative to the end of the list and computed in the example above by given_index + a.shape[0].

I personally think about it like a for loop:

a[start:end:step]
# for(i = start; i < end; i += step)

Also, note that negative values for start and end are relative to the end of the list and computed in the example above by given_index + a.shape[0].

Adding an example on how negative start/end are computed betters this answer.

Source Link

edit approved Jan 15, 2020 at 12:29

NucS

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I personally think about it like a for loop:

a[start:end:step]
# for(i = start; i < end; i += step)

Also note that negative values for start and end are relative to the end of the list and computed in the example above by given_index + a.shape[0].

I personally think about it like a for loop:

a[start:end:step]
# for(i = start; i < end; i += step)

Also note that negative values for start and end are relative to the end of the list.

I personally think about it like a for loop:

a[start:end:step]
# for(i = start; i < end; i += step)

Also note that negative values for start and end are relative to the end of the list and computed in the example above by given_index + a.shape[0].

Active reading.

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edited Sep 26, 2019 at 8:29

Peter Mortensen

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I personally think about it like a forfor loop:

a[start:end:step]    
# for(i = start; i < end; i += step)

Also note that negative values for start and end are relative to the end of the list.

I personally think about it like a for loop

a[start:end:step]    
# for(i = start; i < end; i += step)

Also note that negative values for start and end are relative to the end of the list.

I personally think about it like a for loop:

a[start:end:step]
# for(i = start; i < end; i += step)

Also note that negative values for start and end are relative to the end of the list.

Source Link

answered Aug 23, 2019 at 14:10

Raman

reputation score 2805
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