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  1. #!/usr/bin/env python3
  2.  
  3. import os, pickle, re, sys
  4.  
  5. class Content(object):
  6.     def __init__(self, title, artist, rating, ripped):
  7.         self.title = title
  8.         self.artist = artist
  9.         self.rating = rating
  10.         self.ripped = ripped
  11.     def __repr__(self):
  12.         return f'Title:  {self.title}\nArtist: {self.artist}\nRating: {self.rating}\nRipped: {self.ripped}\n'
  13.  
  14. class Env(object):
  15.     def __init__(self, package, ls = [], fname="", flag = False):
  16.         self.package = package
  17.         self.ls = ls
  18.         self.fname = fname
  19.         self.flag = flag
  20.     def __repr__(self):
  21.         return f'<package: {self.package} list: {self.ls} filename: {self.fname} flag: {self.flag}>'
  22.  
  23. def install_package():
  24.     def insert_value(arg, env):
  25.         return Env(env.package, ls = [Content(*arg)] + env.ls, fname = env.fname)
  26.     def select(arg, env):
  27.         return Env(env.package, ls = env.ls, fname = env.fname, flag = True)
  28.     def new_file(arg, env):
  29.         with open(''.join(arg) + ".dat", "wb") as f:
  30.             pass
  31.         return Env(env.package, ls = env.ls, fname = arg)
  32.     def open_file(arg, env):
  33.         fname = ''.join(arg)
  34.         with open(fname, "rb") as f:
  35.             ls = pickle.load(f)
  36.         return Env(env.package, ls = ls, fname = fname)
  37.     def save_file(arg, env):
  38.         if env.fname == '':
  39.             return save_file_as('tmp.dat', env)
  40.         else:
  41.             os.rename(env.fname, env.fname + '.bak')
  42.             with open(env.fname, "wb") as f:
  43.                 pickle.dump(env.ls, f)
  44.             return Env(env.package, ls = env.ls, fname = env.fname)
  45.     def save_file_as(arg, env):
  46.         fname = ''.join(arg)
  47.         with open(fname, "wb") as f:
  48.             pickle.dump(env.ls, f)
  49.         return Env(env.package, ls = env.ls, fname = fname)
  50.     def delete(arg, env):
  51.         return Env(env.package,
  52.                    ls = [i for i in env.ls if i != env.ls[int(arg[0])]],
  53.                    fname = env.fname)
  54.     return {'insert_value': insert_value,
  55.             'select': select,
  56.             'new_file': new_file,
  57.             'open_file': open_file,
  58.             'save_file': save_file,
  59.             'save_file_as': save_file_as,
  60.             'quit': lambda arg, env: sys.exit(),
  61.             'delete': delete}
  62.  
  63. # Read
  64. def read(env):
  65.     return [i.strip() for i in
  66.             re.split("\(|,|、|\)", input("simple database> "))
  67.             if i != ""]
  68.  
  69. # Eval
  70. def interp(x, env):
  71.     return env.package[x[0]](x[1:], env)
  72.  
  73. # Print
  74. def display(env):
  75.     if env.flag:
  76.         [print(i) for i in env.ls]
  77.     # print(env) # デバッグ用
  78.     return env
  79.  
  80. if __name__ == '__main__':
  81.     env = display(Env(install_package()))
  82.     while True:
  83.         try:
  84.             env = display(interp(read(env), env))
  85.         except KeyError:
  86.             env
  87.         except ValueError:
  88.             env
  89.         except IndexError:
  90.             env
  91.  
Runtime error #stdin #stdout #stderr 0.14s 25660KB
comments (?)
stdin
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Standard input is empty
stdout
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simple database>
stderr
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Traceback (most recent call last):
  File "./prog.py", line 84, in <module>
  File "./prog.py", line 66, in read
EOFError: EOF when reading a line
https://ideone.com/lGv1w6
language:
Python 3 (python  3.9.5)
created:
1 year ago
visibility:
secret

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