Learning Python and trying to get first two letters and last two letters of a string.
- by Sergio Tapia
Here's my code:
# B. both_ends
# Given a string s, return a string made of the first 2
# and the last 2 chars of the original string,
# so 'spring' yields 'spng'. However, if the string length
# is less than 2, return instead the empty string.
def both_ends(s):
if len(s) <= 2:
return ""
else:
return s[0] + s[1] + s[len(s)-2] + s[len(s-1)]
# +++your code here+++
return
Unfortunately my program doesn't run. :( I'm sure I'm overlooking something since I'm a newbie with Python.
Here's the error:
> Traceback (most recent call last):
File "C:\Users\Sergio\Desktop\google-python-exercises\google-python-exercises\basic\string1.py", line 120, in <module>
main()
File "C:\Users\Sergio\Desktop\google-python-exercises\google-python-exercises\basic\string1.py", line 97, in main
test(both_ends('spring'), 'spng')
File "C:\Users\Sergio\Desktop\google-python-exercises\google-python-exercises\basic\string1.py", line 44, in both_ends
return s[0] + s[1] + s[len(s)-2] + s[len(s-1)]
TypeError: unsupported operand type(s) for -: 'str' and 'int'
Thanks for the help guys. :D
