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

[Terry Reedy]

Peter Otten wrote:

>>> 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:

Except possibly for the last line.