Working with files in Python is pretty easy. But there’s a common mistake that can sneak into your code. Not closing the file ...

In the following example, we loop through a list of numbers, and use the variable digit to hold each number in turn: Strings in Python are considered “sequences” — they can be iterated over ...

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… ...

"File_in" is an empty list that can store the contents of each file on each iteration.>>>file_in = list () Use a "for" loop to cycle through each file name in the file name list.

Dictionaries and files are two other Python data types that received the iteration makeover. A dictionary's iterator traverses its keys. The idiom “for eachKey in myDict.keys ()” can be shortened to ...