Question

Write a function valid_integers(strings) that takes a list of strings as a parameter and returns a list of the integers that can be obtained by converting the strings to integers using an expression like int(string). Strings which cannot be converted in this way are ignored.

Hint: the statement pass is a statement that does nothing when executed.

For example:

Test	Result
strings = ['123', '-39', '+45', 'x', 'COSC121', '123+', '12-3'] print(valid_integers(strings))	[123, -39, 45]

Answer 1

def valid_integers(lst):
    result = []
    for x in lst:
        try:
            result.append(int(x))
        except Exception:
            continue
    return result


# Testing
strings = ['123', '-39', '+45', 'x', 'COSC121', '123+', '12-3']
print(valid_integers(strings))

Output :

[123, -39:45]

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