Pulling from List using If/Else statement - Python

Pulling from List using If/Else statement - Python

I want to match the correct terms from my list. Here is my code:

stuff = ["cat", "dog", "house", "cat", "mouse"]    for item in stuff:      if "house" in item:          print "house good"      if "cat" in item:          print "cat good"      if "dog" in item:          print "dog good"      else:          print "nothing else"  

The results are currently this:

cat good  nothing else  dog good  house good  nothing else  cat good  nothing else  nothing else  

But I want the results to be this:

cat good  dog good  house good   cat good   nothing else  

Currently the script keeps pulling "nothing else" because of my else statement. But I don't know how to only making "nothing else" come up exclusively when a term in my list doesn't match the terms in my if statements. Does anyone know I can do this?

Answer by Daniel Roseman for Pulling from List using If/Else statement - Python

You should make all the conditions part of the same statement, by using elif. Currently the else only applies to the last condition.

if "house" in item:      print "house good"  elif "cat" in item:      print "cat good"  elif "dog" in item:      print "dog good"  else:      print "nothing else"  

Answer by NPE for Pulling from List using If/Else statement - Python

You should be using elif, like so:

for item in stuff:      if "house" in item:          print "house good"      elif "cat" in item:          print "cat good"      elif "dog" in item:          print "dog good"      else:          print "nothing else"  

Otherwise the else only applies to the last if.

Answer by D.Paul for Pulling from List using If/Else statement - Python

you must use elif condition like :

stuff = ["cat", "dog", "house", "cat", "mouse"]    for item in stuff:      if "house" in item:          print ("house good")      elif "cat" in item:          print ("cat good")      elif "dog" in item:          print ("dog good")      else:          print ("nothing else")  

Answer by Lee Netherton for Pulling from List using If/Else statement - Python

Other answers suggest that you should be using a elif statement to fix your code. This is perfectly reasonable. However, I just wanted to point out that with a slight refactoring of your code you can make it simpler, more readable, and more extendable:

stuff = ["cat", "dog", "house", "cat", "mouse"]  good_stuff = set(["house", "cat", "dog"])    for item in stuff:      if item in good_stuff:          print item + " good"      else:          print "nothing else"  

Any time that you find yourself using if, elif, elif, elif, ... it is usually because you have designed your code badly.

Note that I am using a set here for optimisation purposes. If you don't know why, then I suggest you look here.

Answer by Alex Zhang for Pulling from List using If/Else statement - Python

Try not to use 'in', if I was you I will try to use '=='.

But judging that it is already in the list, so you won't need the 'for' part I guess, just 'if xxx in stuff'

Hope this helps!

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