How do i read a specific column in excel using pandas?

I am reading from an Excel sheet and I want to read certain columns: column 0 because it is the row-index, and columns 22:37. Now here is what I do:

import pandas as pd
import numpy as np
file_loc = "path.xlsx"
df = pd.read_excel[file_loc, index_col=None, na_values=['NA'], parse_cols = 37]
df= pd.concat[[df[df.columns[0]], df[df.columns[22:]]], axis=1]

But I would hope there is better way to do that! I know if I do parse_cols=[0, 22,..,37] I can do it, but for large datasets this doesn't make sense.

I also did this:

s = pd.Series[0]
s[1]=22
for i in range[2,14]:
    s[i]=s[i-1]+1
df = pd.read_excel[file_loc, index_col=None, na_values=['NA'], parse_cols = s]

But it reads the first 15 columns which is the length of s.

MartyIX

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asked Nov 11, 2015 at 16:28

4

You can use column indices [letters] like this:

import pandas as pd
import numpy as np
file_loc = "path.xlsx"
df = pd.read_excel[file_loc, index_col=None, na_values=['NA'], usecols="A,C:AA"]
print[df]

Corresponding documentation:

usecols : int, str, list-like, or callable default None

• If None, then parse all columns.

• If str, then indicates comma separated list of Excel column letters and column ranges [e.g. “A:E” or “A,C,E:F”]. Ranges are inclusive of both sides.

• If list of int, then indicates list of column numbers to be parsed.

• If list of string, then indicates list of column names to be parsed.

  New in version 0.24.0.

• If callable, then evaluate each column name against it and parse the column if the callable returns True.

Returns a subset of the columns according to behavior above.

New in version 0.24.0.

tdy

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answered Nov 14, 2015 at 14:40

MartyIXMartyIX

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1

parse_cols is deprecated, use usecols instead

that is:

df = pd.read_excel[file_loc, index_col=None, na_values=['NA'], usecols = "A,C:AA"]

Georgy

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answered Mar 23, 2018 at 4:57

LeoliLeoli

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1

"usecols" should help, use range of columns [as per excel worksheet, A,B...etc.] below are the examples

1. Selected Columns

df = pd.read_excel[file_location,sheet_name='Sheet1', usecols="A,C,F"]

2. Range of Columns and selected column

df = pd.read_excel[file_location,sheet_name='Sheet1', usecols="A:F,H"]

3. Multiple Ranges

df = pd.read_excel[file_location,sheet_name='Sheet1', usecols="A:F,H,J:N"]

4. Range of columns

df = pd.read_excel[file_location,sheet_name='Sheet1', usecols="A:N"]

answered Apr 5, 2020 at 9:46

Uday KiranUday Kiran

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2

If you know the names of the columns and do not want to use A,B,D or 0,4,7. This actually works

df = pd.read_excel[url][['name of column','name of column','name of column','name of column','name of column']]

where "name of column" = columns wanted. Case and whitespace sensitive

answered Jun 23 at 20:28

Read any column's data in excel

import pandas as pd


name_of_file =  "test.xlsx"
data = pd.read_excel[name_of_file]

required_colum_name = "Post test Number"
print[data[required_colum_name]]

answered Sep 11 at 12:57

MouneshMounesh

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