How to Extend Multiple Strings in a Python List with a Common String Using Efficient Techniques?

Appending a Common String to Multiple Strings in a Python List

You may encounter a scenario where you need to add the same string to multiple strings in a Python list, creating a new list with the extended strings. Here's how you can achieve this efficiently and concisely:

One of the most straightforward methods is to utilize a list comprehension, as follows:

<code class="python">mystring = 'bar'
mylist = ['foo', 'fob', 'faz', 'funk']
new_list = [s + mystring for s in mylist]</code>

In this example, the new_list will contain the extended strings, resulting in:

['foobar', 'fobbar', 'fazbar', 'funkbar']

Alternatively, if you do not require an actual list but rather an iterator, you can employ a generator expression, which can be more efficient:

<code class="python">new_iterator = (s + mystring for s in mylist)</code>

This iterator can be used to iterate through the extended strings without creating an actual list, potentially saving memory and resources.

Mastering list comprehensions and generator expressions is crucial for any Python programmer looking to develop powerful and concise code.

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