预测分组统计的结果

👁️ 27 人浏览 💬 0 人评论 ❤️ 添加收藏

运行下面的 Python 3 程序，填写结果。

people = [{"name": "小明", "city": "北京"},
          {"name": "小红", "city": "上海"},
          {"name": "小刚", "city": "北京"}]
counts = {}
for p in people:
    c = p["city"]
    counts[c] = counts.get(c, 0) + 1
print(counts)

代码里带 @youci 的语句，以及专门用来输出这些语句的函数，都只负责播放动画，不是这道题要学的内容，也不会出现在输出面板里，做题时不用管它们。

提交你的答案

请登录后提交答案。

去登录

← 取默认值再加一按城市统计人数 →

更多题目

代码编辑器

语言： Ctrl + Enter 运行

def anim_bucket(counts, key, note, value):   # 演示用：分组统计画成一排桶——一个键一只桶、数到一个就投一颗球；key 那只桶变黄；查不到的键画一只灰色空桶
    # 动画演示专用
    print("@youci:wait 700")
    print("@youci:clear")
    print("@youci:interval 0")
    x = 0
    found = False
    for k in counts:
        color = "#74c0fc"
        if k == key:
            color = "#ffe066"
            found = True
        print("@youci:pen", color, 3)
        print("@youci:move", x - 0.8, 3.2)
        print("@youci:line", x - 0.8, 0)
        print("@youci:line", x + 0.8, 0)
        print("@youci:line", x + 0.8, 3.2)
        for i in range(counts[k]):
            print("@youci:dot", x, 0.45 + i * 0.75, color, 26)
        print("@youci:text", x, -0.5, "#e6e9f0 16", k)
        print("@youci:text", x, 3.7, color, 16, counts[k])
        x = x + 2.4
    if key != None and found == False:
        print("@youci:pen #868e96 2")
        print("@youci:move", x - 0.8, 3.2)
        print("@youci:line", x - 0.8, 0)
        print("@youci:line", x + 0.8, 0)
        print("@youci:line", x + 0.8, 3.2)
        print("@youci:text", x, -0.5, "#868e96 16", key)
        print("@youci:text", x, 3.7, "#868e96 16 0")
        x = x + 2.4
    if x == 0:
        print("@youci:text 0 1.6 #868e96 16 还没有桶")
        x = 2.4
    print("@youci:text", (x - 2.4) / 2, 4.6, "#ffffff 16", note, value)
    print("@youci:interval 300")

people = [{"name": "小明", "city": "北京"},
          {"name": "小红", "city": "上海"},
          {"name": "小刚", "city": "北京"}]
counts = {}
for p in people:
    c = p["city"]
    counts[c] = counts.get(c, 0) + 1
    anim_bucket(counts, c, "数到", p["name"])
print(counts)

本次输入：

输出：

👩‍🏫

💬 题目评论

🔒 登录并作答后可看讨论