37,717
社区成员
发帖
与我相关
我的任务
分享pandas怎么逆序输出col2
import numpy as np
import pandas as pd
myarray = np.array([[1,2,3],[2,3,4],[3,4,5]])
rowindex = ['row1','row2','row3']
colname = ['col1','col2','col3']
mydataframe = pd.DataFrame(data=myarray,index=rowindex,columns=colname)
import pandas as pd
myarray = np.array([[1,2,3],[2,3,4],[3,4,5]])
rowindex = ['row1','row2','row3']
colname = ['col1','col2','col3']
mydataframe = pd.DataFrame(data=myarray,index=rowindex,columns=colname)
...全文
请发表友善的回复…
发表回复
欢乐的小猪 2020-10-16
- 打赏
- 举报
myarray = np.array([[1,2,3],[2,3,4],[3,4,5]])
rowindex = ['row1','row2','row3']
colname = ['col1','col2','col3']
mydataframe = pd.DataFrame(data=myarray,index=rowindex,columns=colname)
print(mydataframe['col2'][::-1])
zengxj100 2020-10-16
- 打赏
- 举报
import numpy as np
import pandas as pd
myarray = np.array([[1,2,3],[2,3,4],[3,4,5]])
rowindex = ['row1','row2','row3']
colname = ['col1','col2','col3']
mydataframe = pd.DataFrame(data=myarray,index=rowindex,columns=colname)
# print(mydataframe)
d=sorted(mydataframe['col2'],reverse=True)
print(d)
运行结果：
[4, 3, 2]
