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  1. import string
  2.  
  3. txt = "我是个日本人。我毎天六点半起床。我学习Python。我总在好奇"
  4.  
  5. wrk = [x for x in txt if not x in string.ascii_letters]
  6. aset = set(wrk)
  7. print(aset)
  8.  
Success #stdin #stdout 0.04s 9652KB
stdin
Standard input is empty
stdout
{'点', '。', '六', '天', '本', '学', '在', '奇', '好', '习', '起', '床', '总', '日', '我', '毎', '人', '个', '是', '半'}