Openpyxl How to get row from worksheet by index

Question

Using Openpyxl and python3.5, I tried getting the first row from an excel worksheet using a subscript but I an error.

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Answer 1

The error TypeError: 'generator' object is not subscriptable. Means that you are trying to access by index a generator, which doesn't have one, because it creates the elements as you iterate through it.

You can solve it easily, cast it to a list to get the element you want:

first_row = list(worksheet.rows)[0]

or iterate thought the rows:

for row in worksheet.rows:
    foo(row)

This is because, even if both are iterables, lists and generators can behave quite differently, you can get it better explained here:

https://wiki.python.org/moin/Generators

https://docs.python.org/3/library/stdtypes.html#iterator-types

https://docs.python.org/3/library/stdtypes.html#sequence-types-list-tuple-range