PROGRAMMING:JMU Python find character

Input a string and character, output the position of the first character.
###Input format:
-Line 1: input string
-Line 2: enter a character
###Output format:
-Find and output the corresponding position in the format of 'index = x','x 'indicates the location found
-Can't find, output 'can't find letter X','x 'means to find character
###Input example:
```in
python
t
```
###Output example:
```out
index=3
```
###Input example:
```in
python
l
```
###Output example:
```out
can't find letter l
```







answer：If there is no answer, please comment