How to Efficiently Check for String Extensions Within a String?

Finding Strings within a String

Given a string url_string and a list of extensions extensionsToCheck, determine if any of the extensions appear in the string. A straightforward approach would be to iterate through the list and check for each extension:

<code class="python">for extension in extensionsToCheck:
    if extension in url_string:
        print(url_string)</code>

Alternatively, you can employ a more concise method using a generator and the any function, which evaluates if any of the conditions in the generator are true:

<code class="python">if any(ext in url_string for ext in extensionsToCheck):
    print(url_string)</code>

In this solution, a generator creates a sequence by iterating through extensionsToCheck, checking for each element if it exists within url_string. If any of these checks return true, the any function evaluates to true, and the url_string is printed.

It's important to note that this method checks for the presence of the extensions within url_string regardless of their position. If it's crucial to check for the extension's position, consider using suffixes as described in the answer provided by @Wladimir Palant.

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