def valid_ident(s):
    m = IDENTIFIER.match(s)
    if not m:
        raise ValueError(s % 'Not a valid Python identifier: %r')
    return True


# The ConvertingXXX classes are wrappers around standard Python containers,
# and they serve to convert any suitable values in the container. The
# conversion converts base dicts, lists and tuples to their wrapped
# equivalents, whereas strings which match a conversion format are converted
# appropriately.
#
# Each wrapper should have a configurator attribute holding the actual
# configurator to use for conversion.
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/logging/config.py/valid_ident/swapped operands of `%`