Check if an item is in the list

Question

I'm a newbie in python. I am making a script that will check if an item on the list is on a particular range, it will do some commands. and I have no idea how to make one. Im thinking of using an IF statement, but I think I'm wrong.

What I have in mind is something like:

list = [list of values] if ( an entry on a list is lower than x): #given that x is any number do this

You want to check the entrys value? or index?

Tim
– Tim

2014-10-21 08:25:48 +00:00
Commented Oct 21, 2014 at 8:25 — Tim
– Tim, Commented Oct 21, 2014 at 8:25

unwind · Accepted Answer · 2014-10-21 08:34:13Z

2

You can use min() on the list to return the smallest value. Thus:

if thelist and min(thelist) < x: print "There's something small in the list"

edited Oct 21, 2014 at 8:34

answered Oct 21, 2014 at 8:25

unwind

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2 Comments

Chris Martin Over a year ago

This unnecessarily traverses the entire list, and it raises ValueError when the list is empty.

unwind Over a year ago

@ChrisMartin Good points. I added a test for list validity. The performance penalty is of course true, but perhaps offset by min() being a built-in. I'll leave it, I think it has a clarity benefit at least.

Chris Martin · Accepted Answer · 2014-10-21 08:28:06Z

0

if any(y < x for y in list): pass # do something

answered Oct 21, 2014 at 8:28

Chris Martin

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