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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def all(*validators):
 """Validation only succeeds if all passed in validators return no errors"""

    def validate_all(fields):
        for validator in validators:
            errors = validator(fields)
            if errors:
                return errors

    validate_all.__doc__ = " and ".join(validator.__doc__ for validator in validators)
    return validate_all