How to change uppercase & lowercase alternatively in a string?

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I want to create a new string from a given string with alternate uppercase and lowercase.

I have tried iterating over the string and changing first to uppercase into a new string and then to lower case into another new string again.

def myfunc(x):
    even = x.upper()
    lst = list(even)
    for itemno in lst:
        if (itemno % 2) !=0:
            even1=lst[1::2].lowercase()
        itemno=itemno+1   
    even2=str(even1)
    print(even2)

Since I cant change the given string I need a good way of creating a new string alternate caps.

Here's a onliner

"".join([x.upper() if i%2 else x.lower() for i,x in enumerate(mystring)])

Convert Case, https://www.computerhope.com › › Software Help › Microsoft Word Help How to convert the case of text that has already been typed. There are also some programs that support the ability to change the case of text that has already been typed. For example, in Microsoft Word, you can highlight text and press the keyboard shortcut Shift+F3 to change between lowercase, uppercase, and proper case. Click the link below for the program you want to convert the case.

You can simply randomly choose for each letter in the old string if you should lowercase or uppercase it, like this:

import random

def myfunc2(old):
  new = ''
  for c in old:
    lower = random.randint(0, 1)
    if lower:
      new += c.lower()
    else:
      new += c.upper()
  return new

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Here's one that returns a new string using with alternate caps:

def myfunc(x):
   seq = []
   for i, v in enumerate(x):
      seq.append(v.upper() if i % 2 == 0 else v.lower())
   return ''.join(seq)

How to change between lowercase and uppercase, To change the capitalization one letter at a time, press and hold either the left or right Shift key, then press the letter you want to be capitalized. Change Case Online This online case converter allows you to change your text from UPPERCASE to lowercase, lowercase to UPPERCASE, or capitalize words in sentences with a simple click. If you don't know how to convert the case or capitalization of text in Word, Notepad or other word processing software, then this online tool is designed for you.

This does the job also

def foo(input_message):

    c = 0 
    output_message = ""

    for m in input_message:
        if (c%2==0):
            output_message = output_message + m.lower() 
        else: 
            output_message = output_message + m.upper()
        c = c + 1 

    return output_message

Change the capitalization or case of text, To use a keyboard shortcut to change between lowercase, UPPERCASE, and Capitalize Each Word, select the text and press SHIFT + F3 until the case you  The Change Uppercase to Lowercase Tool is one of several SEO tools available on our site SmallSEOTools.com. It is an online text Converter that can receive both upper

Here's a solution using itertools which utilizes string slicing:

from itertools import chain, zip_longest

x = 'inputstring'

zipper = zip_longest(x[::2].lower(), x[1::2].upper(), fillvalue='')
res = ''.join(chain.from_iterable(zipper))

# 'iNpUtStRiNg'

Case Converter, An Easy Way To Change Uppercase to Lowercase And Title Capitalization. Have you ever typed out a document, made a few capitalization mistakes and wished  How to Easily Change the Case on Text in Microsoft Word. Sentence case: Capitalizes the first letter of the first word in a sentence. lowercase: Makes every letter lowercase. UPPERCASE: Makes every letter UPPERCASE. Capitalize Each Word: Capitalizes the first letter of every word. This is useful for

In Word how to change UPPERCASE to LOWERCASE, This online case converter allows you to change your text from UPPERCASE to lowercase, lowercase to UPPERCASE, or capitalize words in sentences with a  Original Uppercase ----- ----- Powerslave POWERSLAVE Powerage POWERAGE Singing Down the Lane SINGING DOWN THE LANE Ziltoid the Omniscient ZILTOID THE OMNISCIENT Casualties of Cool CASUALTIES OF COOL You can also use LOWER() in the same way to convert a string expression to lowercase .

How to Change Caps to Lowercase in Word, Changing CAPITALS to lower case in Word 2016, Word 2013, Word 2010 and Word 2007. Definition and Usage. The toUpperCase() method converts a string to uppercase letters. Note: The toUpperCase() method does not change the original string. Tip: Use the toLowerCase() method to convert a string to lowercase letters.

Convert Case Online,

Comments
  • You don’t need a list: "".join(x.upper() if i%2 else x.lower() for i,x in enumerate(mystring))
  • @MykolaZotko, Except it's one instance where using a list is more efficient.
  • Your function returns an empty string: ''.
  • No, when you run the code it's print the desire output string. I return empty in string because I do not want to None in output string.
  • The questioner wants to create (not print) a new string from a given string. It's a copy of the @Loss of human identity answer but with printing.
  • hi @hydraspun thank you for your answer. Just posting some code is almost never a good answer. Maybe try to elaborate a bit your thinking and explain why your answer is the correct one. Also you might want to read up on docstrings.