Hello I'm new to this programming language
I wanted to add the word 'and'
before the last item in my list.
For example:
myList = [1,2,3,4]
If I print it the output must be like:
1,2,3 and 4
Here is one way, but I have to convert the int's to strings to use join
:
myList = [1,2,3,4]
smyList = [str(n) for n in myList[:-1]]
print(",".join(smyList), 'and', myList[-1])
gives:
1,2,3 and 4
The -1
index to the list gives the last (rightmost) element.
This may not be the most elegant solution, but this is how I would tackle it.
define a formatter function as follows:
def format_list(mylist)
str = ''
for i in range(len(mylist)-1):
str.append(str(mylist[i-1]) + ', ')
str.append('and ' + str(mylist[-1]))
return str
then call it like this
>>> x = [1,2,3,4]
>>> format_list(x)
1, 2, 3, and 4
You can also use string formating:
l = [1,2,3,4]
print("{} and {}".format(",".join(str(i) for i in l[:-1]), l[-1]))
#'1,2,3 and 4'
Using join
(to join list elements) and map(str,myList)
to convert all integers inside list to strings
','.join(map(str,myList[:-1])) + ' and ' + str(myList[-1])
#'1,2,3 and 4'
Your question is misleading, if you are saying "How to add a word before the last word in list?" it means you want to add 'and' string before last item in the list , while many people are giving answer using .format() method , You should specify you want 'and' for printing or in list for further use of that result :
Here is list method according to your question :
myList = [1,2,3,4]
print(list((lambda x,y:(x+['and']+y))(myList[:-1],myList[-1:])))
output:
[1, 2, 3, 'and', 4]
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