[Tutor] Python strings example

[Alan Gauld]

On 27/04/2021 03:49, Manprit Singh wrote:

> If you look at Peter's solution, you can see it is using two generator
> expressions(I mean to say there is a utilization of two for loops that
> increases complexity) what practices should be adopted  in such cases ? the
> one done by Peter or the one done by me ?

The complexity is not much different since your function
has 4 assignments, one for-loop and two boolean expressions.
Peter's has 2 generator expressions and one boolean expression.

Peter's also has a more direct statement of the logic
which makes it easier to read and understand. It is
also (probably) more efficient for large strings
since any() will stop at the first occurrence
whereas your loop tests every character.

We can avoid that in your function but only by adding
yet another test:

def str_chk(word_tochk):
    dig = False
    alpha = False
    for ele in word_tochk:
        dig = dig or ele.isdigit()
        alpha = alpha or ele.isalpha()
        if dig and alpha: return True
    return False

But that then adds more complexity.

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Alan G
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