>>> ["foo", "bar", "baz"].index("bar") 1 See the documentation for the built-in .index() method of the list:. list.index(x[, start[, end]])

Btw, the reason Method 5 is much slower than Method 6 is because numpy first has to convert the given list to it's own numpy array, so giving it a list doesn't break it it just doesn't fully utilise the …

Called to implement operator.index(), and whenever Python needs to losslessly convert the numeric object to an integer object (such as in slicing, or in the built-in bin(), hex() and oct() …

Nov 19, 2011 · That post is about array indexing, with the IndexError: list index out of range problem, not the index() method with ValueError: <value> is not in list issue described here. – …

This code fails to prove that list.index operates in linear time. It does not compare how long list.index takes to run on varying input sizes, but it simply runs list.index multiple times. Even if …

Another method is to use list.index() inside a loop. However, in contrast to other answers on this page mentioning this method (1, 2, 3), the starting point of the index search (which is the …

Feb 6, 2009 · Is there any built-in methods that are part of lists that would give me the first and last index of some value, like: verts.IndexOf(12.345) verts.LastIndexOf(12.345)

Mar 9, 2009 · Your slicing method does not remove an element from a list: instead it creates a new list object containing all but the ith entry from the original list. The original list is left …

If you want to remove them from the list, then the Pythonic way is not to necessarily remove from the list, but write a list comprehension as if you were creating a new list, and assigning back in …

Aug 23, 2020 · The cleanest approach is to copy the list and then insert the object into the copy. On Python 3 this can be done via list.copy: new = old.copy() new.insert(index, value) On …