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Frequently Asked Questions

What does a for loop within a list do in Python?

You can loop through the list items by using a while loop. Use the len () function to determine the length of the list, then start at 0 and loop your way through the list items by refering to their indexes. Remember to increase the index by 1 after each iteration.

How to write for loops in Python?

When programming in Python, for loops often make use of the range () sequence type as its parameters for iteration. For Loops using Sequential Data Types Lists and other data sequence types can also be leveraged as iteration parameters in for loops. Rather than iterating through a range (), you can define a list and iterate through that list.

How to add elements to a list in Python?

Methods to add elements to List in Python append (): append the object to the end of the list. insert (): inserts the object before the given index. extend (): extends the list by appending elements from the iterable. List Concatenation: We can use + operator to concatenate multiple lists and create a new list.

How does the Python for loop actually work?

To carry out the iteration this for loop describes, Python does the following: Calls iter () to obtain an iterator for a Calls next () repeatedly to obtain each item from the iterator in turn Terminates the loop when next () raises the StopIteration exception


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