Python might in general prefer exceptions, but many users expect there to be a non-exception-raising-find-index method as well, especially as that's how it's done in almost every other …

There is an abstraction in here to define a find function. Just encapsulate the the boolean expession of the if in a lambda & you can write find(fn,list) usually instead of obfuscating …

Feb 19, 2010 · 6 If you want to find the first match. Python has a in-built string method that does the work: index ().

Aug 20, 2013 · Over half a millisecond in some cases to find a value in a series of 25. 2022-02-18 Update Updated all the timings with the latest Pandas version and Python 3.9. Even on an …

How do I determine: the current directory (where I was in the shell when I ran the Python script), and where the Python file I am executing is?

Python has string.find() and string.rfind() to get the index of a substring in a string. I'm wondering whether there is something like string.find_all() which can return all found indexes (not only the …

724 The majority of answers explain how to find a single index, but their methods do not return multiple indexes if the item is in the list multiple times. Use enumerate():

Dec 16, 2011 · I want an idiomatic way to find the first element in a list that matches a predicate. The current code is quite ugly: [x for x in seq if predicate(x)][0] I've thought about changing it …

I've got a list of objects. I want to find one (first or whatever) object in this list that has an attribute (or method result - whatever) equal to value. What's the best way to find it? Here's a t...

Find all the occurrences of a character in a string Asked 13 years, 1 month ago Modified 1 year, 3 months ago Viewed 106k times