想要对数据集DataFrame进行排序,可以调用()方法 ( ) A: sort_values B: value_counts C: unique D: Counts

Which of the following sentence is right in G major ? A: An open inner string counts as 2, the outer string counts as 5 B: An open inner string counts as 5, the outer string counts as 2 C: An open inner string counts as 2, the outer string counts as 6 D: An open inner string counts as 6, the outer string counts as 3

若将单词保存于word中，可实现使用字典counts统计单词出现次数的代码是（） A: counts[word]+=1 B: counts[word]=1 C: counts[word]=counts.get(word,1)+1 D: counts[word]=counts.get(word,0)+1

Quality is ( ) counts most.

统计DataFrame对象stu中各‘省份’同学人数的方法是________。 A: stu[].value_counts(‘省份’) B: stu[‘省份’].count() C: stu[‘省份’].value_counts() D: pd.value_counts(stu[‘省份’])

【单选题】假设要统计一段英文每个单词出现的次数,可以使用一个字典类型 counts={},统计单词出现的次数可采用以下代码() A. counts[word] = count[word] + 1 B. counts[word] = count.get(word,0) + 1 C. counts[word] = 1 D. C. counts[word] = count.get(word,1) + 1

The saddest thing about your life is that you fail to ___________ what counts most from what counts little to your future.

This sort of maintenance _______________ only about 5% of all maintenance. A: accounts for B: accounts up to C: counts for D: counts up to

“on both counts” means "in both ways".

In this job, experience counts for more than paper __________ .