course = "Python Programming"
score = 95.5
sentence = f"{course}课程的成绩是{score}分"
print(sentence)
print(type(score))
course_under = course.replace(" ","_")
print(course_under)
count_o = course.count('o')
print("字母o出现的次数:",count_o)
Y291cnNlID0gIlB5dGhvbiBQcm9ncmFtbWluZyIKc2NvcmUgPSA5NS41CnNlbnRlbmNlID0gZiJ7Y291cnNlfeivvueoi+eahOaIkOe7qeaYr3tzY29yZX3liIYiCnByaW50KHNlbnRlbmNlKQpwcmludCh0eXBlKHNjb3JlKSkKCmNvdXJzZV91bmRlciA9IGNvdXJzZS5yZXBsYWNlKCIgIiwiXyIpCnByaW50KGNvdXJzZV91bmRlcikKY291bnRfbyA9IGNvdXJzZS5jb3VudCgnbycpCnByaW50KCLlrZfmr41v5Ye6546w55qE5qyh5pWwOiIsY291bnRfbyk=