re.search when used within an if/else fails
python at mrabarnett.plus.com
Tue Nov 20 02:21:54 CET 2012
On 2012-11-19 23:43, Kevin T wrote:
> python version 2.4.3, yes i know that it is old. getting the sysadmin to update the OS requires a first born.
> with the following code..
> for signal in register['signals'] :
> 351 sigName = signal['functionName']
> 352 if re.search( "rsrvd", sigName ) == None :
> 353 print sigName
> 354 newVal = "%s%s" % ( '1'*signal['bits'] , newVal ) #prepend 0's
> 355 if re.search( "rsrvd", sigName ) != None :
> 356 print sigName
> 357 newVal = "%s%s" % ( '0'*signal['bits'], newVal )
> regardless of how i code line 352, i can not EVER use an else clause with it. if i use an else clause, the else will NEVER get executed...
> has any one experienced anything like this behavior? any suggestions? the above code works but... why should i have to code it like this?
Have you checked the indentation? There may be a mixture of tabs and spaces.
A couple of points:
1. You should be using "is None" and "is not None" instead of "== None"
and "!= None".
2. You don't need to use regex. Use "rsrvd" in sigName and "rsrvd" not
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