extracting numbers from a file, excluding fixed words

[Daniel Bowett]

dawenliu wrote:
> Hi, I have a file with this content:
> xxxxxxx xxxxxxxxxx xxxxx xxxxxxx
> 1
> 0
> 0
> 0
> 1
> 1
> 0
> (many more 1's and 0's to follow)
> yyyyy yyyyyy yyy yyyyyy yyyyy yyy
> 
> The x's and y's are FIXED and known words which I will ignore, such as
> "This is the start of the file" and "This is the end of the file".  The
> digits 1 and 0 have UNKNOWN length.  I want to extract the digits and
> store them in a file.  Any suggestions will be appreciated.
> 

Open the file and read each line 1 at a time. If the line doesn't equal 
x or y then add the line to a list

f = open("file.txt")

numbers = []

for eachline in f.xreadlines():
	if (eachline <> x) or (eachline <> y):
		numbers.append(eachline)