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Convert int to string in python

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# 1  
Old 01-06-2014
Convert int to string in python
Hi,

I have column 5 in a file which contains string like this for ex.
Code:
RP11-125O5.2
SLCO1B1
CAPN1
FRMPD2
TXNL4B

So I do by
Code:
data = [map(int,cols[5])]
ValueError: invalid literal for int() with base 10: 'R'

Can someday tell me how to convert this column into int successfully.

Thank You in advance.

Regards
Rossi
Last edited by vbe; 01-06-2014 at 10:34 AM.. Reason: code tags
# 2  
Old 01-06-2014
To state the obvious, the values are not integers and some have multiple groups of digits and so creation of the required integer requires a more precise specification.

Could you provide the integer values you want returned for the above?

Or do you want to catch the exception and handle these invalid columns differently?
# 3  
Old 01-06-2014
I am at a loss here.
Is it a string representation of the _numbers_ part?
If so then does that include the "." which makes that part a float?
What about the "-", (minus in this case; NOT hyphen), is that needed?
OR...
Is it a numerical representation of each ASCII character, "ord()" for example.
Lastly your <title> is the opposite of what your <text body> says.
Which is it?

Please give us more to go on...

Python version, machine, OS, etc...

EDIT:
BTW Python has had a wonderful traceback system ever since I first started exerimenting with it at version 1.4.0...
Last edited by wisecracker; 01-06-2014 at 11:57 AM.. Reason: See above...
# 4  
Old 01-06-2014
Hi Wisecarcker :

I want to convert the whole column into int. all alphanumerical characters in string.

Python version 2.7
OS linux
# 5  
Old 01-06-2014
Quote:
Originally Posted by rossi
Hi Wisecarcker :

I want to convert the whole column into int. all alphanumerical characters in string.

Python version 2.7
OS linux
there's no need to convert to int unless you want to do some mathematics on those columns. Your column contains letters. What are you actually trying to do with that column?
# 6  
Old 01-06-2014
My data is like this :

Code:
chr12   21007916        21377807        369.89  -3.12   RP11-125O5.2
chr12   21007916        21377807        369.89  -3.12   SLCO1B1
chr12   21007916        21377807        369.89  -3.12   SLCO1B3
chr12   21007916        21377807        369.89  -3.12   RP11-545J16.1
chr12   21007916        21377807        369.89  -3.12   SLCO1B7
chr12   6625994 6627160 1.17    -5.01   NCAPD2
chr11   64977257        64981527        4.27    -6.72   CAPN1
chr11   64977257        64981527        4.27    -6.72   CAPN1


I need an output:
Code:
chr12   21007916        21377807        369.89  -3.12    RP11-125O5.2,SLCO1B1,SLCO1B7
chr12   6625994 6627160 1.17    -5.01   NCAPD2
chr11   64977257        64981527        4.27    -6.72   CAPN1

I have made a script but need to convert the column 5 into int in order to make it working
Last edited by bartus11; 01-06-2014 at 01:11 PM.. Reason: Please use CODE tags instead of ICODE, for multiline output.
# 7  
Old 01-06-2014
No, you don't want to convert column 5 to int, you want to group records with identical fields 0-4 and join their field 5 values with a comma.

Given the modified spec could you try again and let us know how you get on
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