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Suppose you have to accomplish this quite generic task:
Given a string, we’ll say that the
front is the first 3 chars of the
string. If the string length is less
than 3, the front is whatever is
there. Return a new string which is 3
copies of the front.
Now, as Python lists silently skip out of bounds exceptions, one solution could be:
def front(string):
return 3 * string[:3]
This works even if the given string’s length is less than length 3. But is this good practice?
Yes, it is perfectly a good practice, if your requirement is exactly that. 🙂