def camelize(key):
return '<STR_LIT>'.join(x.capitalize() if i > <NUM_LIT:0> else x<EOL>for i, x in enumerate(key.split('<STR_LIT:_>')))<EOL>
Convert a python_style_variable_name to lowerCamelCase.

    Examples
    --------
    >>> camelize('variable_name')
    'variableName'
    >>> camelize('variableName')
    'variableName'