python - How to verify that a string has characters belonging to an alphabet? -

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मैं इस कोड है: 

  वर्णमाला = string.ascii_uppercase + string.digits + ' _ 'डीईएफ़ is_correct (mystr): # जांच अगर mystr में पात्रों वर्णमाला # संबंधित लौट सही है या गलत

मुझे क्या होता है:

  1. mystr की वर्णमाला प्राप्त करें: alphabet1
  2. देखें कि क्या alphabet1

लेकिन मैं के सभी पात्रों पर कैसे करना है पता नहीं 1) किसी दिए गए स्ट्रिंग के वर्णमाला कैसे प्राप्त करें? और यह कैसे पता चलेगा कि यदि alphabet1 में है ALPHABET ? 

  वर्णमाला = string.ascii_uppercase + string.digits + '_' डीईएफ़ is_correct (mystr): वापसी सेट (mystr) .issubset (सेट (वर्ण))

या 

  def is_correct (mystr): सभी को वापस (mystr में c के लिए ALPHABET में)

OR 

  def Mystr: char में mystr के लिए: if char नहीं में ALPHABET: return False return True

OR 

  def is_correct (mystr): mystr = ALPHABET में चार के लिए सेट (mystr): mystr.discard (char) वापस नहीं mystr

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