Nick Dumas wrote:
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Err...you want to know what is in a file before you open it? This could
be done if you keep some external database documenting changes made to
the file. But unless I misunderstand what you're saying, then it's not
possible to know the contents of a file without opening and reading that
file.
W. eWatson wrote:
I have an ordinary text file with a CR at the end of a line, and two
numbers in each line. Is there some way to determine the number of lines
(records) in the file before I begin reading it?
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Maybe. I could see it if the file were truly in a record format. The # of
records might be kept by the OS. It's conceivable that Python or the OS
might see a file with a CR as "recordized". All unlikely though. Just checkin'.
How about in a slightly different case. Suppose I want to know the number of
files in a folder? The OS and maybe some Python method might know that.
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