I am trying to take a file and remove all characters that are not in the greek language. We found the unicode values for the alphabet, 880 - 1023, and were able to print out the correct characters with a simple `print(unichr(880))` line. The problem is when running this code 

```
greek ='ÏÎ' 
for c in greek:
    if(unichr(c) >= 880 and unichr(c) <= 1023):
        print(c)

```

Is there a way to enter any letter or symbol that will return a unicode value. We have tested with values inside of the greek range and outside and still get the same error, `UnicodeDecodeError: 'ascii' codec cannot decode byte 0xc3 in position 0: ordinal not in range(128)`