Re: extracting a substring

2006-04-19 Thread Kent Johnson
[EMAIL PROTECTED] wrote: Hi, I have a bunch of strings like a53bc_531.txt a53bc_2285.txt ... a53bc_359.txt and I want to extract the numbers 531, 2285, ...,359. One thing for sure is that these numbers are the ONLY part that is changing; all the other characters are always fixed. In

Re: extracting a substring

2006-04-19 Thread rx
and I want to extract the numbers 531, 2285, ...,359. One thing for sure is that these numbers are the ONLY part that is changing; all the other characters are always fixed. I'm not sure about what you mean by always fixed but I guess it means that you have n files with a fixed start and a

extracting a substring

2006-04-18 Thread [EMAIL PROTECTED]
Hi, I have a bunch of strings like a53bc_531.txt a53bc_2285.txt ... a53bc_359.txt and I want to extract the numbers 531, 2285, ...,359. One thing for sure is that these numbers are the ONLY part that is changing; all the other characters are always fixed. I know I should use regular

Re: extracting a substring

2006-04-18 Thread Gary Herron
[EMAIL PROTECTED] wrote: Hi, I have a bunch of strings like a53bc_531.txt a53bc_2285.txt ... a53bc_359.txt and I want to extract the numbers 531, 2285, ...,359. One thing for sure is that these numbers are the ONLY part that is changing; all the other characters are always fixed. I know I

Re: extracting a substring

2006-04-18 Thread Felipe Almeida Lessa
Em Ter, 2006-04-18 às 17:25 -0700, [EMAIL PROTECTED] escreveu: Hi, I have a bunch of strings like a53bc_531.txt a53bc_2285.txt ... a53bc_359.txt and I want to extract the numbers 531, 2285, ...,359. Some ways: 1) Regular expressions, as you said: from re import compile find =

Re: extracting a substring

2006-04-18 Thread Dale Strickland-Clark
You don't need a regex for this, as long as the prefix and suffix are fixed lengths, the following will do: a53bc_531.txt[6:-4] '531' a53bc_2285.txt[6:-4] '2285' [EMAIL PROTECTED] wrote: Hi, I have a bunch of strings like a53bc_531.txt a53bc_2285.txt ... a53bc_359.txt and I want to