python - Where am I messing up with output formatting? -

so got error message when tried run code , can't figure out problem is. says it's valueerror can't figure out 1 exactly. maybe it's late, @ loss.

here's code:

def sort(count_dict, avg_scores_dict, std_dev_dict):     '''sorts , prints output'''     menu = menu_validate("you must choose 1 of valid choices of 1, 2, 3, 4 \n        sort options\n    1. sort avg ascending\n    2. sort avg descending\n    3. sort std deviation ascending\n    4. sort std deviation descending", 1, 4)     print ("{}{0:27}{0:39}{0:51}\n{}".format("word", "occurence", "avg. score", "std. dev.", "="*51))      if menu == 1:                dic = ordereddict(sorted(word_average_dict.items(), key=lambda x:x[1], reverse=false))         key in dic:             print ("{}{0:27}{0:39:.4f}{0:51:.4f}".format(key, count_dict[key], avg_scores_dict[key], std_dev_dict[key]))     elif menu == 2:         dic = ordereddict(sorted(word_average_dict.items(), key=lambda x:x[1], reverse=true))         key in dic:             print ("{}{0:27}{0:39:.4f}{0:51:.4f}".format(key, count_dict[key], avg_scores_dict[key], std_dev_dict[key]))     elif menu == 3:         dic = ordereddict(sorted(std_dev_dict.items(), key=lambda x:x[1], reverse=false))         key in dic:             print ("{}{0:27}{0:39:.4f}{0:51:.4f}".format(key, count_dict[key], avg_scores_dict[key], std_dev_dict[key]))     elif menu == 4:         dic = ordereddict(sorted(std_dev_dict.items(), key=lambda x:x[1], reverse=true))         key in dic:             print ("{}{0:27}{0:39:.4f}{0:51:.4f}".format(key, count_dict[key], avg_scores_dict[key], std_dev_dict[key]))      return none 

here's output , error when run it:

you must choose 1 of valid choices of 1, 2, 3, 4          sort options     1. sort avg ascending     2. sort avg descending     3. sort std deviation ascending     4. sort std deviation descending1 traceback (most recent call last):   file "c:\users\ryan\documents\program 7\program 7.py", line 161, in <module>     output = sort(cnt_dict, word_avg_dict, std_dev_dict)   file "c:\users\ryan\documents\program 7\program 7.py", line 99, in sort     print ("{}{0:27}{0:39}{0:51}\n{}".format("word", "occurence", "avg. score", "std. dev.", "="*51)) valueerror: cannot switch automatic field numbering manual field specification 

what messing up? , appreciated!

you can't switch , forth between automatic field numbering - specifying simple {} - , manual field specification, e.g. {0}. if want same field repeated several times, 'word' in example, you'll have specify want other fields be. example, might want start first argument, 'word', element 0, , fifth argument, '='*51, last, element 4:

>>> print("{0}{0:27}{0:39}{0:51}\n{4}".format("word", "occurence", "avg. score", "std. dev.", "="*51)) wordword                       word                                   word  =================================================== 

you'll have decide arguments want placed in format string.