%s占位符构建字符串
print("nihao %s,welcome to %s" % ("jam", "beijing"))
输出:nihao jam,welcome to beijing
print("hello %-5s,welcome to%12s" % ("jam", "beijing"))
输出:hello jam ,welcome to beijing
-5表示的是%s所替代的字符串如果不足五个字符则在右边补足到5个字符,12表示在左边补足
%s占位符构建字符串
print("nihao %s,welcome to %s" % ("jam", "beijing"))
输出:nihao jam,welcome to beijing
print("hello %-5s,welcome to%12s" % ("jam", "beijing"))
输出:hello jam ,welcome to beijing
-5表示的是%s所替代的字符串如果不足五个字符则在右边补足到5个字符,12表示在左边补足