python how to uppercase some characters in string

Question

Here is what I want to do but doesn\'t work:

mystring = \"hello world\"
toUpper = [\'a\', \'e\', \'i\', \'o\', \'u\', \'y\']
array = list(mystring)

for c in arr         


        

Answer 1

You can do:

mystring = "hello world"
toUpper = ['a', 'e', 'i', 'o', 'u', 'y']

>>> ''.join([c.upper() if c in toUpper else c for c in mystring])
hEllO wOrld