change the first character of the line to uppercase in a text file

Angus Rodgers twirlip at
Sat Jun 27 13:13:57 CEST 2009

On Sat, 27 Jun 2009 13:02:47 +0200, Peter Otten 
<__peter__ at> wrote:

>Angus Rodgers wrote:
>> On Sat, 27 Jun 2009 11:39:28 +0100, I asked rhetorically:
>>>Will your program handle empty lines of input correctly?
>> Strangely enough, it seems to do so, but why?
>Because there aren't any. When you read lines from a file there will always 
>be at least the newline character. Otherwise it would indeed fail:
>>>> for line in "peter\npaul\n\nmary".splitlines():
>...     print line[0].upper() + line[1:]
>Traceback (most recent call last):
>  File "<stdin>", line 2, in <module>
>IndexError: string index out of range

Hmm ... the \r\n sequence at the end of a Win/DOS file seems to be
treated as a single character.

Angus Rodgers

More information about the Python-list mailing list