使用 Python 和 pandas 在列中搜索值并返回同一行但不同列的值

Question

This is my initial days working with pandas and excel.

I have two problems where I am stuck.

My excel look like this:-

Port	NaN
1	OPS
2	WTH
3	PNS
4	SSM
5	RTY
6	EWR

I have to search for value '4' in Column1(I dont have column name so I may have to use df.iloc[:,0]).

Now, if I find the value '4' then I should output 'SSM'.

1)I am having trouble finding the value '4' not sure which function to use. I checked the type of the return object and got this.

column_port=df.iloc[:,0]
print(type(column_port))

<class 'pandas.core.series.Series'>

I am not sure how to search for a element in this return type.

2)If I found the value '4', how to output the value from different column. In this case 'SSM'.

Answer 1

you can try:

result = df.loc[df.iloc[:,0].eq(4)]['specify the column name here']
result = df.loc[df.iloc[:,0].eq(4)].iloc[:,'specify the column index here']