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  1. msg="hello 123 WORLD"
  2. length=len(msg)
  3. lower_count = sum(1 for ch in msg if ch.islower())
  4. print("长度:",length)
  5. print("小写字母个数:", lower_count)
  6. new_msg = msg.replace("WORLD","Python")
  7. result = new_msg.lower()
  8. print("结果",result)
Success #stdin #stdout 0.07s 14120KB
stdin
Standard input is empty
stdout
长度: 15
小写字母个数: 5
结果 hello 123 python