How to change a string into uppercase

I have problem in changing a string into uppercase with Python. In my research, I got string.ascii_uppercase but it doesn't work.

The following code:

 >>s = 'sdsd' >>s.ascii_uppercase 

Gives this error message:

Traceback (most recent call last): File "<console>", line 1, in <module> AttributeError: 'str' object has no attribute 'ascii_uppercase' 

My question is: how can I convert a string into uppercase in Python?

7 Answers

Use str.upper():

>>> s = 'sdsd' >>> s.upper() 'SDSD' 

See String Methods.

To get upper case version of a string you can use str.upper:

s = 'sdsd' s.upper() #=> 'SDSD' 

On the other hand string.ascii_uppercase is a string containing all ASCII letters in upper case:

import string string.ascii_uppercase #=> 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 

to make the string upper case -- just simply type

s.upper() 

simple and easy! you can do the same to make it lower too

s.lower() 

etc.

s = 'sdsd' print (s.upper()) upper = raw_input('type in something lowercase.') lower = raw_input('type in the same thing caps lock.') print upper.upper() print lower.lower() 

for making uppercase from lowercase to upper just use

"string".upper() 

where "string" is your string that you want to convert uppercase

for this question concern it will like this:

s.upper() 

for making lowercase from uppercase string just use

"string".lower() 

where "string" is your string that you want to convert lowercase

for this question concern it will like this:

s.lower() 

If you want to make your whole string variable use

s="sadf" # sadf s=s.upper() # SADF 

For questions on simple string manipulation the dir built-in function comes in handy. It gives you, among others, a list of methods of the argument, e.g., dir(s) returns a list containing upper.

For converting first letter of each word into capital in a sentence

s = 'this is a sentence' str.title(s) >>> 'This Is A Sentence'