def random_string(length):
str_list = [random.choice(string.digits + string.ascii_letters) for i in range(length)]<EOL>return '<STR_LIT>'.join(str_list)<EOL>
Generate random string with parameter length.
Example:

    >>> from eggit.egg_string import random_string
    >>> random_string(8)
    'q4f2eaT4'
    >>>