## File updation on matching key

File updation on matching key
# 8
06-09-2016
Inferring from lines 5 and 8, the division should be done by constant 2, not the line count per key. Under the assumption that field 8, embedded in field separators, is NOT matched anywhere else in the line, try Should the line count matter, try
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# 9
06-09-2016
Hi Rudic,

Thanks for your update on this. But it is not working for my case. And one more thing I have not got your code
Here I have not got "file" means which file ? I have used your code for my input but it not worked.
I brief u about input and output . Input as below
in the Input given column 3 is the key column. consider row 1
Here key is 200741. So search for 200741 in remaining rows of column 3. Here is no other key like 200741. So here calculation will be like
((7th column value + 9th column value)of row 1)/2 ie (1+1)/2=1. So update column 8 of row 1 with value 000001.

Explanation 2 : Consider row 6
here key is 7025339518. So search for 7025339518 in remaining rows of column 3. Here you will find key 7025339518 in row 7 as well. so for this the calculation
will be like ((7th column value + 9th column value)of row 6 + (7th column value + 9th column value)of row 7)/2 => ((1+3)+(3+2))/2=5. So update column 8 of row 6
and 7 with value 000005

So Expected output for above result is :

---------- Post updated at 08:42 PM ---------- Previous update was at 08:00 PM ----------

Hi Ridic,
for below input :
output as below :
Just one minor updation needed. If the division result is decimal value ie for row 6 and 7 it is 4.5 but it shows it as 4 . Can we make it as round value as 5. ie if result is 6.5 then it should be display 7

Last edited by RudiC; 06-09-2016 at 12:25 PM.. Reason: Removed unnecessary quote tags.
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# 10
06-09-2016
Quote:
Originally Posted by PRAMOD 96
.
.
.
But it is not working for my case.
WHAT is not working for your case?

Quote:
And one more thing I have not got your code
What code then have you got?

Quote:
The approach of these fora could be "Teach me to do it myself" ("Hilf mir, es selbst zu tun"; is a quote from Maria Montessori). So the preferred method would be to show an effort by yourself and ask for improvement potential, not a request like above.

It is appreciated that you learned your lesson reg. code tags! But ... quote tags are for quotes, i.e. if you copy other posts or threads, or even outside contributions, use those. NOT for your own contributions!

For "file" read "your input file". Supply it twice to the script.

my solution applied to your new sample data yields: You seem to want the result rounded, not truncated? Put SUM[\$3]/2+.5) into the sprintf statement.

How about the specification: I want field 8 to be the rounded sum of the \$7 and \$9 averages per key value?

Last edited by RudiC; 06-09-2016 at 12:38 PM..
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# 11
06-09-2016
Obviously your (late) update crossed my post referring to your former post.
 RudiC View Public Profile for RudiC Find all posts by RudiC
# 12
06-09-2016
And rounding result value code also worked. I liked "Teach me to do it myself" thing and will do the same in future whenever needed.

Thanks again for help.
 PRAMOD 96 View Public Profile for PRAMOD 96 Find all posts by PRAMOD 96
# 13
06-09-2016
I'm glad you got it to work. If you'd like to show us how you changed the code to perform the rounding you wanted, we might be able to offer suggestions for alternative ways to do it. (And, having your completed solution in the thread helps others who may have a similar problem in the future if they can see how you solved the problem.)

If field 8 always 6 characters? Or, can the length of that field vary from file to file too? (Making that field variable length isn't complicated, if the length varies.)

Can the original value in field 8 ever appear as the value of field 2, 3, 4, 5, 6, or 7 in any of your input files? (As long as the 1st field is always left aligned and the aren't any empty fields in your input files, it wouldn't be too hard to be sure that field 8 is modified in the output and not an earlier field with the same contents. But, the code is faster and simpler as provided in RudiC's suggestion if this isn't a concern for your input files.)
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Test Your Knowledge in Computers #613
Difficulty: Medium
Examples of complex numbers in Python are (-5+4j) and (2.3 - 4.6j).
True or False?

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