pandas中哪个方法不能对pandas的数据对象进行合并()A、groupbyB、concatC、mergeD、join

题目

pandas中哪个方法不能对pandas的数据对象进行合并()

  • A、groupby
  • B、concat
  • C、merge
  • D、join
如果没有搜索结果或未解决您的问题,请直接 联系老师 获取答案。
相似问题和答案

第1题:

在Pandas 中如果需要查看数据表格所有列的名字,那么可以使用以下哪种方法:

A.row
B.rows
C.column
D.columns

答案:D
解析:

第2题:

Pandas 中,如果要查看某一列的数据类型,可以使用 _______ 方法.


答案:
解析:
1、dtype

第3题:

在 Pandas 中,可以使用 to_xxx 导入哪些结构(后缀)的数据, 请至少写出3种可用的数据后缀 ________, ________, _________.


答案:
解析:
1、csv 2、hdf 3、xls

第4题:

pandas中的date_range方法可以索引一定时期或时间范围内的数据。


正确答案:正确

第5题:

试讲题目1.题目:Wild animals
2.内容:
Sadly, giant pandas face serious problems in the wild. For example, it is very difficult for pandas to have babies, and many baby pandas die when they are very young. Also, giant pandas live mainly on a special kind of bamboo. However, the bamboo forests are becoming smaller and smaller. As a result, pandas may not have a place to live or food to eat.
Giant pandas are now in danger. We should take action right away. Here are some ideas.
1. help pandas have more babies;
2. build more panda reserves;
3. make laws to protect pandas.
3.基本要求:
(1)朗读全文;
(2)设计引导学生进行预测的教学活动;
(3)配合教学内容适当板书;
(4)全英授课。
答辩题目1. How should we communicate with students?
2. Please talk about your own personality. Are you outgoing or introverted?


答案:
解析:
二、考题解析
【教案】
Wild animals
Teaching aims:
Knowledge aims:
Students can understand the content of the listening material.
Students can be familiar with the present situation of giant pandas.
Ability aim:
Students will develop their listening abilities of catching key words.
Emotional aim:
Students can foster the awareness of protecting wild and endangered animals.
Key and difficult points:
Key point:
How to understand the listening material.
Difficult point:
How to foster the awareness of protecting wild animals.
Teaching procedures:
Step 1: Warming-up
1. Greetings.
2. Let students enjoy a song named Do Re Mi and ask them what is followed by doe. The song is like this:
Doe, a deer, a female deer.
Ray, a drop of golden sun.
Me, a name I call myself.
Far, a long, long way to run.
Sew, a needle pulling thread.
La, a note to follow Sew.
Tea, a drink with jam and bread.
That will bring us back to Do (oh-oh-oh).
Ask students to answer the question. Then tell them that elk is a kind of endangered animal and lead in the topic.
Step 2: Pre-listening
Show an interesting video clip of a cute giant panda named Qingyi, who is a social media star. And ask students a question, “What do you know about giant pandas?” Then ask students to predict the main idea of the listening material according to the video.
Step 3: While-listening
1. Extensive listening
Read the passage for students and ask them to find the main idea of the listening material.
Then invite one student to write the answer on the blackboard.
2. Intensive listening
Play the tape and ask students to answer two questions:
Q1: What problem do giant pandas face?
Q2: How should we protect giant pandas, according to the passage?
Then lead students to fill in the chart on the blackboard.
Step 4: Post-listening
Ask students to design a slogan for protecting giant pandas in groups of four and encourage students to be creative. 5 minutes are given for discussion. Then invite some groups to share and explain.
Step 5: Summary and Homework
Summary: invite a student to be a little teacher and summarize today’s lesson. Ask students to protect wild and endangered animals.
Homework: ask students to design a poster of protecting wild animals.
Blackboard design:

Teaching reflection

第6题:

在Pandas 中如果要查看某一列数据的值(去除重复后的值),那么可以使用以下哪种方法:

A.null()
B.isunique()
C.unique()
D.isnull()

答案:C
解析:

第7题:

在Pandas 中,我们常常使用head () 对前十行数据进行查看,如果需要查看后10条数据我们可以使用 ________ 进行查看。


答案:
解析:
tail()

第8题:

Pandas 的两个最基本的数据结构为 _______和 _______ 。


答案:
解析:
1、Dataframe 2、Serises

第9题:

pandas中哪个方法可以将分类变量处理为虚拟变量()

  • A、one_hot
  • B、get_dummies
  • C、code_without_intercept
  • D、code

正确答案:B

第10题:

Pandas中的函数eval()能够将字符串对象转化为有效的表达式。在DataFrame大于10000行使用eval()时,计算性能会得到明显提升。


正确答案:正确