头歌python百分制成绩转

在Python中，如果你想将百分制的成绩转换成等级，比如常见的90分以上为A，80-89为B+，70-79为B，以此类推，你可以编写一个简单的函数来实现这个功能。以下是一个示例：

def convert_grade(score):
    if score >= 90:
        grade = 'A'
    elif 80 <= score < 90:
        grade = 'B+'
    elif 70 <= score < 80:
        grade = 'B'
    elif 60 <= score < 70:
        grade = 'C'
    elif 60 > score >= 50:
        grade = 'D'
    else:
        grade = 'F'
    
    return grade

# 示例
score = 85
converted_grade = convert_grade(score)
print(f"Score {score} is equivalent to a {converted_grade}.")