python - Use Function to Return a List of Words Containing Required Letters -

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i trying write function takes string, , checks every letter in string against every letter, in every line, in list of words. code have written is:

def uses_all(required):     fin = open('words.txt')     line in fin:         letter in line:             if letter not in required:                 pass     return line

when try have words contain vowels returned returning last line in file.

>>> uses_all('aeiou') 'zymurgy\n'

well, function you´ve written iterates through file without doing anything, , returns last line, behavior see kinda expected.

try this:

def uses_all(required):     ret = []     fin = open('words.txt')     line in fin:         # let´s try , find our required letters in word.         letter in required:             if letter not in line:                 break # we`re missing one! break!          else: # else block executes if no break occured             ret.append(line)      return ret

it`s lousy implementation, should work.


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