data types into sequence of bytes using particular encoding using the str encode(methodand we can convert sequence of bytes that use particular encoding back to string using the bytes decode(method the wide variety of character encodings currently in use can be very inconvenientbut utf- is fast becoming the de facto standard for plain text files (and is already the default for xml files)so this problem should diminish in the coming years in addition to the data types covered in this python provides two other built-in data typesbytes and bytearrayboth of which are covered in python also provides several collection data typessome built-in and others in the standard library in the next we will look at python' most important collection data types exercises || modify the print_unicode py program so that the user can enter several separate words on the command lineand print rows only where the unicode character name contains all the words the user has specified this means that we can type commands like thisprint_unicode_ans py greek symbol one way of doing this is to replace the word variable (which held noneor string)with words list don' forget to update the usage information as well as the code the changes involve adding less than ten lines of codeand changing less than ten more solution is provided in file print_unicode_ans py (windows and cross-platform users should modify print_unicode_uni pya solution is provided in print_unicode_uni_ans py modify quadratic py so that factors are not outputand so that negative factors are output as rather than as - this involves replacing the last five lines with about fifteen lines solution is provided in quadratic_ans py (windows and cross-platform users should modify quadratic_uni pya solution is provided in quadratic_uni_ans py delete the escape_html(function from csv html pyand use the xml sax saxutils escape(function from the xml sax saxutils module instead this is easyrequiring one new line (the import)five deleted lines (the unwanted function)and one changed line (to use xml sax saxutils escape(instead of escape_html() solution is provided in csv html _ans py modify csv html py againthis time adding new function called process_options(this function should be called from main(and should return tuple of two valuesmaxwidth (an intand format ( strwhen process_options(is called it should set default maxwidth of and default format of "--this will be used as the format specifier when outputting numbers