Reference library

Lists & loops

Iterate, transform, and combine sequences with readable loop patterns.

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Lists & loops easy

How to Safely Convert a List of Strings to Integers in Python

Convert a list of strings to integers while skipping invalid entries and collecting the failed values for inspection.

list conversion int conversion error handling
Python 
def safe_to_int(values):
    """Safely convert a list of strings to integers, skipping invalid entries."""
    result = []
    errors = []
    for value in values:
        try:
            result.append(int(value))
        except (ValueError, TypeError):
            errors.append(value)
    return result, errors


if …
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