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  1. course = "Python Programming"
  2. # 将空格替换为下划线
  3. course_under = course.replace (" ", "_")
  4. print(course_under)
  5.  
  6. # 统计字母'o'出现的次数
  7. count_o = course.count('o')
  8. print("字母o出现的次数：", count_o)# your code goes here
Success #stdin #stdout 0.09s 14056KB
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Standard input is empty
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Python_Programming
字母o出现的次数： 2
https://ideone.com/OOMC3w
language:
Python 3 (python  3.12)
created:
4 days ago
visibility:
public

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