Change case for columns in list

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How do I change the case for data frame columns that are in a list? I know how to make all columns upper case but I don't know how to only make specific columns upper case.

d = {'name':['bob','john','sue'],'id':[545,689,143],'fte':[1,.5,.75]}
df = pd.DataFrame(d)
# list of columns I want to make upper case
cols = ['id','fte']

This doesn't do anything (no error and case isn't changed):

df[cols].rename(str.upper,axis=1,inplace=True)
df


    name    id  fte
0   bob     545     1.00
1   john    689     0.50
2   sue     143     0.75

It won't work the way you're trying to do it, the reason being that indices do not support mutable operations. So one thing you could do is to use a list comprehension to generate a new list of column names an reassign it to df.columns:

df.columns = [i.upper() if i in cols else i for i in df.columns]
print(df.columns)
# Index(['name', 'ID', 'FTE'], dtype='object')

Change case for columns in list, It won't work the way you're trying to do it, the reason being that indices do not support mutable operations. So one thing you could do is to use� Select the column containing the data we want to transform ➜ go to the Add Column tab ➜ select Format ➜ select UPPERCASE from the menu. = Table.AddColumn (#"Changed Type", "UPPERCASE", each Text.Upper ([Name]), type text) This will create a new column with all text converted to upper case letters using the Text.Upper power query function.

IIUC

df.rename(columns=dict(zip(cols,list(map(str.upper,cols)))))
Out[1135]: 
   name   ID   FTE
0   bob  545  1.00
1  john  689  0.50
2   sue  143  0.75

Change letter case of column names, I have a large number of data sets each containing a long list of column names. In some files the column names are all capital letters and in some� There are three functions that allow you to change the case of text in multiple columns easily: = Upper (B1) – converts text to all upper case = Lower (B1) – converts text to all lower case = Proper (B1) – converts text to proper case, or title case (the first letter of each word is capitalized)

You could also use rename as follows

import pandas as pd

d = {'name':['bob','john','sue'],'id':[545,689,143],'fte':[1,.5,.75]}
df = pd.DataFrame(d)
# list of columns I want to make upper case
cols = ['id','fte']
newColumns = {oldName: oldName.upper() for oldName in cols}
df.rename(columns=newColumns, inplace=True)
print(df)

Apply uppercase to a column in Pandas dataframe, Output: There are certain methods we can change/modify the case of column in Pandas dataframe. Let's see how can we apply uppercase to a� How To Change Case In Excel: Capitalize First (Or ALL) Letters + More! Written by co-founder Kasper Langmann, Microsoft Office Specialist. There are times when letter case in Excel needs to be changed or corrected.

First you can create a map:

# create map manually
col_map = {"id": "ID", "fte": "FTE"}
# or create map automatically
col_map = {item:item.upper() for item in list(df.columns)[1:]}

Then replace the columns index:

df = df.rename(columns=col_map)

5 Ways To Change Text Case In Excel, You have a list of names and it's all lower case letter. You need to fix Create- Calculated-Column-in-Power-Pivot 5 Ways To Change Text In some files the column names are all capital letters and in some files only the first letter of the column names is capitalized. I need to append the data sets and thought the easiest way to match column names among data sets would be to convert the all-capital names into names with only the first letter capitalized.

Excel tutorial: How to change case with UPPER LOWER and PROPER, If you want to change case in Excel, you'll need to use one of its special Column B contains last names in uppercase text, and column C contains each person in the list, using first and last names, separated by a period. A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.

There are number of reasons you want to change the case of the string. 0:00 For example, make all the text in a column uppercase or all the text lowercase. 0:04 The two most common uses are to standardize output and 0:10 when searching for values. 0:14 There are two functions for changing cases.