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  1. def get_filename(message):
  2.     forbidden='*|\\:"<>?/'
  3.     while True:
  4.         line=input(message)
  5.         for i in forbidden:
  6.             if i in line:
  7.                 print('Symbols {} are forbidden to use'.format(forbidden))
  8.                 break
  9.         else:
  10.             break
  11.     if not line.endswith('.lst'): line+='.lst'
  12.     return line
  13.  
  14. def get_int(message,i_c):
  15.     error_line='Only numbers {} are allowed'.format(range(i_c))
  16.     while True:
  17.         try:
  18.             i=int(input(message))
  19.             if i in range(i_c+1):
  20.                 return i
  21.             else:
  22.                 print(error_line)
  23.         except ValueError:
  24.             print(error_line)
  25.  
  26. def options(changed,empty):
  27.     line='[A]dd '+('[S]ave ' if changed else '')+('[D]elete ' if not empty else '')+'[Q]uit [a]: '
  28.     answers='Aa'+('Ss' if changed else '')+('Dd' if not empty else '')+'Qq'
  29.     while True:
  30.         answer=input(line)
  31.         if answer:
  32.             if answer in answers:
  33.                 return answer.lower()
  34.             else:
  35.                 print('-Invalid choice. Print one of: \'{}\'-'.format(answers))
  36.         else:
  37.             return 'a'
  38. def options_quit():
  39.     line='Unsaved changes were made. Do you want to save them?\n[Y]es [N]o [C]ancel: '
  40.     answers='YyNnCc'
  41.     while True:
  42.         answer=input(line)
  43.         if answer in answers and answer:
  44.             return answer.lower()
  45.         else:
  46.             print('Answer only {}'.format(answers))
  47.  
  48. def save_list(filename,items):
  49.     file=open('data\\'+filename,'w')
  50.     for i in items:
  51.         file.write(i+'\n')
  52.  
  53. def print_list(lst):
  54.     for i,j in enumerate(lst,start=1):
  55.         print('{}: {}'.format(i,j))
  56.  
  57. def add(items):
  58.     items.append(input('Add item: '))
  59.     items.sort(key=str.lower)
  60.  
  61. def delete(items):
  62.     item_number=get_int('Number of item to delete or 0 to cancel:',len(items))
  63.     if item_number==0:
  64.         return
  65.     else:
  66.         items.pop(item_number-1)
  67.  
  68. def main():
  69.     import os
  70.     files=[i for i in os.listdir('data') if i.endswith('.lst')]
  71.     if files:
  72.         print_list(files)
  73.         option=get_int('Print the number of file to load or 0 to create a new one: ',len(files))
  74.     else:
  75.         print('-No .lst files were found-')
  76.         option=0
  77.     if not option:
  78.         filename=get_filename('Print name for a new .lst file: ')
  79.         items=[]
  80.     else:
  81.         filename=files[option-1]
  82.         items=[i.rstrip('\n') for i in open('data\\'+filename,'r')]
  83.     ITEMS,changed=tuple(items),0
  84.     print(filename)
  85.     while True:
  86.         if items:
  87.             print_list(items)
  88.             empty=0
  89.         else:
  90.             print('-list is empty-')
  91.             empty=1
  92.         option=options(changed,empty)
  93.         if option=='a':
  94.             add(items)
  95.             changed=1
  96.         elif option=='d':
  97.             delete(items)
  98.             changed=1
  99.         elif option=='s':
  100.             save_list(filename,items)
  101.             changed=0
  102.             break
  103.         else:
  104.             if changed:
  105.                 option=options_quit()
  106.                 if option=='y':
  107.                     save_list(filename,items)
  108.                     break
  109.                 elif option=='n':
  110.                     break
  111.             else:
  112.                 break
  113.  
  114. main()
Runtime error #stdin #stdout #stderr 0.02s 28384KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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Traceback (most recent call last):
  File "./prog.py", line 114, in <module>
  File "./prog.py", line 70, in main
FileNotFoundError: [Errno 2] No such file or directory: 'data'
https://ideone.com/mytlxk
language:
Python 3 (python  3.9.5)
created:
6 years ago
visibility:
public

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