a 1 b 2 Common Python for loops. Here are some common objects used in a Python for loop: Lists. The example above shows how a list can be iterated over using a for loop. Note that if you have a ...

By using the open() function and a simple loop, you can cycle through a list of file names and assign a variable with a reference to that file, storing it for later use. Create a list of file names.

If you’ve ever written any Python at all, the chances are you’ve used iterators without even realising it. Writing your own and using them in your programs can provide significant perfo… ...