On Jun 29, 3:12 am, c0mrade <[EMAIL PROTECTED]> wrote: > Try something like this... > > list = ['lkdfjsldk', None, '', '0', 'slfkjsdlfj', 'lsdgjdlfg', False, True] > for n, it in enumerate(list): > if not it: print 'Error on this definition' > else: print '%d. %s' % (n+1, it) > > Results: > 1. lkdfjsldk > Error on this definition > Error on this definition > 4. 0 > 5. slfkjsdlfj > 6. lsdgjdlfg > Error on this definition > 8. True > > > > Alexnb wrote: > > > I am having a problem with a list value that is empty. I have a list of > > definitions called mainList. the 5th value in the list doesn't have > > anything > > in it. In this case, the values are definitions; also, in this case just > > the > > word cheese is defined. Here is my output to the console: > > > 5. a sprawling,weedy plant having small lavender or white flowers and > > round, flat, segmented fruits thought to resemble little wheels of cheese. > > 6. > > 7. an ingot or billet made into a convex, circular form by blows at the > > ends. > > > I've made it so where the numbers, the period, and two spaces follow that, > > then the definition. However, as you can see in 6, there is nothing. Here > > is > > the code to print all this: > > > n=0 > > > for x in mainList: > > if mainList[n] == "": > > print "Error on this definition" > > else: > > print str(n+1)+". "+str(mainList[n]) > > n=n+1 > > > Now the two "" is where I need to figure out if it is empty. What is up > > right now doesn't work; or at least doesn't give the desired result. So I > > need to know how to write the if statement to make it work. This should be > > simple, but I just don't know how to do it, never had this problem before. > > > -- > >http://mail.python.org/mailman/listinfo/python-list > > -- > View this message in > context:http://www.nabble.com/Testing-for-Null--tp18175738p18176481.html > Sent from the Python - python-list mailing list archive at Nabble.com.
myList = ['lkdfjsldk', None, '', '0', 'slfkjsdlfj', 'lsdgjdlfg', False, True] ['%s\t%s'%((i+1),element) if element else '%s\tError on this definition'%(i+1) for i,element in enumerate(myList)] -- http://mail.python.org/mailman/listinfo/python-list
