future_builtins the future_builtins moduleonly available in python provides implementations of the built-in functions whose behavior is changed in python the following functions are definedascii(objectproduces the same output as repr(refer to the description in the "built-in functionssection of this filter(functioniterablecreates an iterator instead of list the same as itertools ifilter(hex(objectcreates hexadecimal stringbut uses the _index_ (special method to get an integer value instead of calling _hex_ (map(functioniterablecreates an iterator instead of list the same as itertools imap(oct(objectcreates an octal stringbut uses the _index_ (special method to get an integer value instead of calling _oct_ (zip(iterableiterablecreates an iterator instead of list the same as itertools izip(be aware that the functions listed in this module are not complete list of changes to the built-in module for instancepython also renames raw_input(to input(and xrange(to range( lib fl ff