Print 2 items in one line dynamically

Question

EDIT2: (Thanks Padraic Cunningham)

This is the error I get when I try this in the interpreter,

>>> print s

Tony1
7684 dogs
Garry 2
8473 dogs
sara111
0 dogs

>>> spl = s.lstrip().splitlines()
>>> 
>>> for it1, it2 in zip(spl[::2],spl[1::2]):
...     print("{} {}".format(it1 ,it2))
... 
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
ValueError: zero length field name in format

EDIT:

Im sorry this did not solve what I was looking for, I need to do this with words, for example my output on regex looks like:

Tony1
7684 dogs
Garry 2
8473 dogs
sara111
0 dogs

I need it to look like:

Tony1 7684 dogs
Garry 2 8473 dogs
sara111 0 dogs

Is this possible?

Original:

I would like to make several statements that give standard output without seeing newlines in between statements.

Specifically, suppose I have:

for item in range(1,100):
print item

The output looks like:

1
2
3
4
.
.
.

How get this to instead look like:

possible duplicate of [How to print in Python without newline or space?](http://stackoverflow.com/questions/493386/how-to-print-in-python-without-newline-or-space) — jgritty, Dec 10 '14 at 18:03
why are there four items on the second line `Garry 2 8473 dogs`? — Padraic Cunningham, Dec 10 '14 at 21:25
That is the output that I get from my script, "Garry 2" is on one line and "8473 dogs" is on the next line — Aladine, Dec 10 '14 at 21:33
the only logic I see is you want to join every two lines together — Padraic Cunningham, Dec 10 '14 at 21:41

Padraic Cunningham · Accepted Answer · 2014-12-11T10:33:04.030

Using print item, item + 1 will not work on all data, zip will:

rn  = range(1,100)
for item1,item2 in zip(rn[::2],rn[1::2]):
  print item1,item2

Or izip_longest for uneven length lists:

rn = range(1,100)
for item1,item2 in izip_longest(rn[::2],rn[1::2],fillvalue=0):
  print item1,item2

rn[::2] gets every second element starting from elemett 0, rn[1::2] gets every second element starting from element 1

From your edit, what you seem to need is to concat every two lines together:

     s ="""
In [1]: paste
 s ="""
Tony1
7684 dogs
Garry 2
8473 dogs
sara111
0 dogs
"""
spl = s.lstrip().splitlines()

for it1, it2 in zip(spl[::2],spl[1::2]):
    print("{} {}".format(it1 ,it2))

## -- End pasted text --
Tony1 7684 dogs
Garry 2 8473 dogs
sara111 0 dogs

For python 2.6:

for it1, it2 in zip(spl[::2],spl[1::2]):
        print("{0} {1}".format(it1 ,it2))

Thanks so much so far, but I get an error when trying this.. Traceback (most recent call last): File "", line 2, in ValueError: zero length field name in format — Aladine, Dec 10 '14 at 21:44

score 0 · Answer 2 · answered Dec 10 '14 at 18:16

0

for item in range(1,100):
if item % 2 == 0:
    print item
else:
    print item,

answered Dec 10 '14 at 18:16

James Malvi

90
7

score 0 · Answer 3 · answered Dec 10 '14 at 18:24

from the ipython shell

In [13]: def print_by(l,n):
   ....:     for t in zip(*([iter(l)]*n)):
   ....:         for el in t: print el,
   ....:         print
   ....:         

In [14]: print_by(range(40),4)
0 1 2 3
4 5 6 7
8 9 10 11
12 13 14 15
16 17 18 19
20 21 22 23
24 25 26 27
28 29 30 31
32 33 34 35
36 37 38 39

In [15]:

It works because the list on which zip operates contains n instances of the same iterator on the argument list...

Print 2 items in one line dynamically

3 Answers3