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  1. course = "Python Programming"
  2. score = 95.5
  3.  
  4. sentence = f"{course}课程的成绩是{score}分"
  5.  
  6.  
  7. course_under = course.replace(" ","_")
  8. print(course_under)
  9.  
  10. count_o = course.count('o')
  11. print("字母o出现的次数:",count_o)
Success #stdin #stdout 0.07s 14116KB
stdin
Standard input is empty
stdout
Python_Programming
字母o出现的次数: 2