Question: The points is from a certain input for example "Hello World" I need to print each character(case-sensitive) is repeated twice.
It should look like this "HHeelllloo WWoorrlldd".

Thanks for the help

Answer: 
You could do:

```
s = "Hello World"
print("".join(x*2 if x != " " else x for x in s ))

```

**OUTPUT**

```
'HHeelllloo WWoorrlldd'

```

I received a comment highlighting the fact that spaces do not need to be doubled - hence `if x != " " else x` has been added. If that is not the case - you want to double spaces as well:

```
"".join(x*2 for x in s )

```
Try this:

```
inp = input()
print(''.join(c + c for c in inp))

```