打印字符串

"""
    根据下列文字，提取变量，使用字符串格式化打印信息
    湖北确诊67802人,治愈63326人,治愈率0.99   
"""

region = "湖南"
confirmed = 67802
cure = 63326
proportion = 0.99

print("%s确诊%s人,治愈%s人,治愈率%.2f%%" % (region, confirmed, cure, proportion * 100))

秒转分

"""
    70秒是01分零10秒
"""
s1 = 70
m = s1 // 60
s2 = s1 % 60

print("%s秒时%.2d分零%.2d秒" % (s1, m, s2))

 字符串切片