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Asked: 2026-05-27T13:37:46+00:00

Here is my code in Python: queryuniq = SELECT COUNT(distinct src_ip), COUNT(distinct video_id)FROM video

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Here is my code in Python:

queryuniq = "SELECT COUNT(distinct src_ip), COUNT(distinct video_id)FROM video"
cur.execute(queryuniq)
uniq = []
uniq = cur.fetchall()
print uniq
ip = str(uniq[0])
video = str(uniq[1])
fd2.write("There are %d ip addresses and %d video in total" %(int(ip), int(video)))

This is the value of “uniq” variable I got: 

 ((2052L, 163581L),)

And this error message:

 fd2.write("There are %d ip addresses in total" %(int(ip)))
 ValueError: invalid literal for int() with base 10: '((2052L,),)'
 video = str(uniq[1])
 IndexError: tuple index out of range

I just simply want to count the distinct items in a column in the database, and print the INT value in a file.

Can anyone explain why the SELECT command return a weird data format like ((2052L, 163581L),) ? Don’t understand why there is a “L”after the number..

How can I solve this problem? Many thanks!

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1 Answer

  1. Editorial Team

    uniq is a tuple of tuples (each entry at the outer level represents a database row, within which there is a tuple of column values).

    You query always returns one row. Therefore the outer tuple always contains one element, and you could fix your code by replacing:

    uniq = cur.fetchall()

    with

    uniq = cur.fetchall()[0]

    Also, the conversions from int to string and then back to int are unnecessary.

    To summarize, the following is a tidied up version of your code:

    queryuniq = "SELECT COUNT(distinct src_ip), COUNT(distinct video_id)FROM video"
cur.execute(queryuniq)
uniq = cur.fetchall()[0]
ip, video = uniq
fd2.write("There are %d ip addresses and %d video in total" %(ip, video))
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