研究Python dataFrame
[英]Research in a Python dataFrame
问题描述
I have a dataframe composed of a column 'Letter' filled with letter going from A to Z and a column 'Lane' filled with 0 and 1. I would like to know if there is the letter H and if yes how many times on lane 0 and how many times on lane 1.
我有一个 dataframe 由一个“字母”列组成，其中包含从 A 到 Z 的字母，以及一个“车道”列，其中包含 0 和 1。我想知道是否有字母 H，如果有，在车道上有多少次0 以及在第 1 车道上的次数。
Basically I would like to know: the number of 'H' on each track (0 and 1).基本上我想知道：每条轨道（0和1）上“H”的数量。
In addition I would like to know how to perform a multiple search.另外我想知道如何执行多重搜索。 That is to say search two letters at the same time?也就是说同时搜索两个字母？
Can someone please help me?有人可以帮帮我吗？
1 个解决方案
解决方案1
0 已采纳 2020-05-06 14:30:40
df[(df['Letter'] = 'H') & (df['Lane'] == 0)].count()
df[(df['Letter'] = 'H') & (df['Lane'] == 1)].count()
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