How to limit for loop to print first few element from list in python?

Question

How should i print the first 5 element from list using for loop in python. i created some thing is here.

x= ['a','b','c','d','e','f','g','h','i']
for x in x:
   print x;

with this it just print all elements within list.but i wanted to print first 5 element from list.thanks in advance.

TerryA · Accepted Answer · 2013-11-01 06:49:56Z

22

You can use slicing:

for i in x[:5]:
    print i

This will get the first five elements of a list, which you then iterate through and print each item.

It's also not recommended to do for x in x:, as you have just overwritten the list itself.

Finally, semi-colons aren't needed in python :).

answered Nov 1, 2013 at 6:49

TerryA

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8 Comments

Ashwini Chaudhary Over a year ago

And this won't raise any IndexError if list contains fewer items.

Peter DeGlopper Over a year ago

Alternatively - for much larger slices than 5 elements - use itertools.islice to avoid constructing a large temporary sublist. But it doesn't matter in this case.

Ashwini Chaudhary Over a year ago

@PeterDeGlopper Slicing is faster than islice in almost all cases.

Vivek Bhintade Over a year ago

Actully what i wanted know is. I read the records from mongodb in one variable with test = collectionname.fetch() and i wanted to print first few records from this all records in html did like {{ %for i in test }} //perform other operation on i so instead of this way is there any other way With this loop operation is performed on all records.

Peter DeGlopper Over a year ago

@hcwhsa - thanks for the link, I'll have to remember that. I guess islice is mostly better for slicing non-list iterables like other generator expressions.

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