course = "Python Programming"
score = 95.5
sentence = f"{course}课程的成绩是{score}分"
course_under = course.replace(" ","_")
print(course_under)
count_o = course.count('o')
print("字母o出现的次数:",count_o)
Y291cnNlID0gIlB5dGhvbiBQcm9ncmFtbWluZyIKc2NvcmUgPSA5NS41CgpzZW50ZW5jZSA9IGYie2NvdXJzZX3or77nqIvnmoTmiJDnu6nmmK97c2NvcmV95YiGIgoKCmNvdXJzZV91bmRlciA9IGNvdXJzZS5yZXBsYWNlKCIgIiwiXyIpCnByaW50KGNvdXJzZV91bmRlcikKCmNvdW50X28gPSBjb3Vyc2UuY291bnQoJ28nKQpwcmludCgi5a2X5q+Nb+WHuueOsOeahOasoeaVsDoiLGNvdW50X28p