search a string

[Bruno Desthuilliers]

Carl J. Van Arsdall a écrit :
> david brochu jr wrote:
> 
>> Hello,
>>  
>>  
>> I have a text file with the following string:
>> ['\r\n', 'Pinging www.ebayyy.com <http://www.ebayyy.com/> 
>> [207.189.104.86 <http://207.189.104.86>] with 32 bytes of data:\r\n', 
>> '\r\n', 'Request timed out.\r\n', '\r\n', 'Ping statistics for 
>> 207.189.104.86:\r\n', '    Packets: Sent = 1, Received = 0, Lost = 1 
>> (100% loss),\r\n']
>>  
>>  
>> How would I search to find out if the string contained "Request" and 
>> report if "Request" was found or not in the string?

<op>
First point : this is not a string, but a list of strings. I suppose it 
comes from a file.readlines() call. If you want the whole file content 
as a single string, use file.read() instead - but take care of big files...
</op>

> Well, there really are two ways you could go about it depending on what 
> you are more comfortable with.
> 
> One way:
> 
> import re
> line = '<...>' # all that stuff from above
> regExp = re.compile('Request')
> if regExp.match(line):
>  print 'I found requested'
> 

FWIW, you could also hand-code a dedicated parser - preferably in 
assembler - then write a Python binding for it.

> or you can use one of the string modules, 

Or just use str object's methods...

f = open('mylogfile.log')
for line in f:
   if "Request" in line:
     print "got one"
     break
else:
   print "no Request found in mylogfile.log"
f.close()