elements

I have the general idea of how to do this in Java, but I am learning Python and not sure how to do it. I need to implement a function that returns a list containing every other element of the list, starting with the first element. Thus far, I have and not sure how to do from here since I am just learning how for-loops in Python are different: def altElement(a): b = [] for i in a: b.append(a) print b def altElement(a): return a[::2] Darius Bacon Slice notation a[start_index:end_index:step] return a[::2] where start_index defaults to 0 and end_index defaults to the len(a) . Alternatively, you

I have a list of lists: [word, good freq, bad freq, change_status] list_1 = [['good',100, 20, 0.2],['bad', 10, 0, 0.0],['change', 1, 2, 2]] I would like to delete from the list all elements which don't satisfy a condition. So if change_status > 0.3 and bad_freq < 5 then I would like to delete that the elements corresponding to it. So the list_1 would be modified as, list_1 = [['good',100, 20, 0.2],['bad', 10, 0, 0.0]] How do I selective do that? list_1 = [['good',100, 20, 0.2],['bad', 10, 0, 0.0],['change', 1, 2, 2]] list_1 = [item for item in list_1 if item[2] >= 5 or item[3] >= 0.3] You can

I have a page with anchor tags throughout the body like this: <a id="test" name="Name 1"></a> <a id="test" name="Name 2"></a> <a id="test" name="Name 3"></a> The ID is always the same but the name changes. I need to populate a list of the names of these anchor tags, for example; Name 1, Name 2, Name 3. This is where I've got to so far: document.write(document.getElementById("readme").name); This writes out the name of the first anchor tag. I'm in need of a way to get multiple elements by Id. Any help is greatly appreciated. If you can change the markup, you might want to use class instead. <!-

I am looking for some tips on how to solve my problem. I have a html element (like select box input field) in a table. Now I want to copy the object and generate a new one out of the copy, and that with JavaScript or jQuery. I think this should work somehow but I'm a little bit clueless at the moment. Something like this (pseudo code): oldDdl = $("#ddl_1").get(); newDdl = oldDdl; oldDdl.attr('id', newId); oldDdl.html(); Boris Guéry Using your code you can do something like this in plain JavaScript using the cloneNode() method: // Create a clone of element with id ddl_1: let clone = document