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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 0.09s 14128KB
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长度： 15
小写字母个数： 5
结果： hello 123 python
https://ideone.com/Q1cAxb
language:
Python 3 (python  3.12)
created:
16 hours ago
visibility:
public

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