File read-write mode: problem appending after reading

[Frederic Rentsch]

Tim Peters wrote:
> [Frederic Rentsch]
>   
>>       Thanks a lot for your input. I seemed to notice that  everything
>> works fine without setting the cursor as long as it stops before the end
>> of the file. Is that also a coincidence that may not work?
>>     
>
> "if you want to read following a write, or write following a read, on
> the same stream, you must perform a file-positioning operation
> (typically a seek) between them"
>   
I appreciate the clarification. Thanks!