How can I convert a string into uppercase in Python? When I tried to research the problem, I found something about string.ascii_uppercase, but it couldn't solve the problem:

Mar 5, 2019 · In Python str.upper() returns a copy of the string with upper case values, and does not mutate the original string. In fact, strings in Python are immutable anyways.

May 29, 2018 · How to convert all elements in a list into uppercase using a for loop and upper () while indexing the list directly? Asked 7 years, 8 months ago Modified 3 years, 5 months ago Viewed 6k times

I have a Python list variable that contains strings. Is there a function that can convert all the strings in one pass to lowercase and vice versa, uppercase?

You can use the str.translate() method to have Python replace characters by other characters in one step. Use the string.maketrans() function to map lowercase characters to their uppercase targets:

Sep 13, 2012 · Very useful answer, because capitalize & title first lowercase the whole string and then uppercase only the first letter.

I understand that in the first iteration the string, s, become just the first character, an uppercase "I" in this particular case. But, I have tried to do it without the "s = " , using swapchcase() instead, but it's not …

FWIW, Python 3 uses unicode by default, making the distinction largely irrelevant. Taking a string from unicode to str and then back to unicode is suboptimal in many ways, and many libraries will produce …

Mar 1, 2024 · Suppose there are hundreds of columns in a DataFrame. Some of the column names are in lower and some are in upper case. Now, I want to convert all the columns to upper case. import …

Apr 8, 2013 · How to extract all UPPER from a string? Python Asked 12 years, 10 months ago Modified 5 years, 8 months ago Viewed 45k times