test="qwertyuiopasdfghjklzxcvbnm"
def changestring(string):
for x in 'aeiou':
string = string.replace(x, '*')
return string
changestring(test)
'qw*rty***p*sdfghjklzxcvbnm'
Is this what you are trying to do?
5
solved Why can’t I return the modified str_func function back to the main function?