Apr 21, 2019 · The enumerate() function adds a counter to an iterable. So for each element in cursor, a tuple is produced with (counter, element); the for loop binds that to row_number and …

Use the Enumerate Function Python's enumerate function reduces the visual clutter by hiding the accounting for the indexes, and encapsulating the iterable into another iterable (an enumerate …

However, it is inaccurate: python's enumerate does not return a list of tuples. it returns an 'enumerate object' that is iterable since enumerate was designed to be a generator.

49 Just to be really clear, this has nothing to do with enumerate and everything to do with list comprehension syntax. This list comprehension returns a list of tuples:

Mar 27, 2016 · enumerate iterates through a data structure (be it list or a dictionary) while also providing the current iteration number. Hence, the columns here are the iteration number …

In our case: for index, line in enumerate(f): f is the file object. File objects are iterators: they iterate over lines of the file. We transform that into an iterator over (line number, line from file) pairs. …

Nov 25, 2015 · for i, l in enumerate(['a', 'b', 'c']): print "%d: %s" % (i, l) However, I can't figure out how to combine the two: How do I use enumerate when the list in question is made of tuples? …

Mar 31, 2015 · Define a function my_enumerate(items) that behaves in a similar way to the built-in enumerate function. It should return a list of pairs (i, item) where item is the i th item, with 0 …

I have a question I need to solve using python, using a def function. Basically take a list of numbers, and then and add a letter at the end of each element in the list. I was finally able to …

Aug 16, 2012 · enumerate is faster when you want to repeatedly access the list items at their index. When you just want a list of indices, it is faster to to use len () and range/xrange.