[python] Getting SyntaxError for print with keyword argument end=' '

I have this python script where I need to run gdal_retile.py, but I get an exception on this line:

if Verbose:
   print("Building internam Index for %d tile(s) ..." % len(inputTiles), end=' ')

The end=' ' is invalid syntax. I am curious as to why, and what the author probably meant to do.

I'm new to python if you haven't already guessed.

I think the root cause of the problem is that these imports are failing and therefore one must contain this import from __future__ import print_function

try: 
   from osgeo import gdal
   from osgeo import ogr
   from osgeo import osr
   from osgeo.gdalconst import *
except:
   import gdal
   import ogr
   import osr
   from gdalconst import *

For python 2.7 I had the same issue Just use "from __future__ import print_function" without quotes to resolve this issue.This Ensures Python 2.6 and later Python 2.x can use Python 3.x print function.

Even I was getting that same error today. And I've experienced an interesting thing. If you're using python 3.x and still getting the error, it might be a reason:

You have multiple python versions installed on same drive. And when you're presing the f5 button the python shell window (of ver. < 3.x) pops up

I was getting same error today, and noticed that thing. Trust me, when I execute my code from proper shell window (of ver. 3.x), I got satisfactory results

USE :: python3 filename.py

I had such error , this occured because i have two versions of python installed on my drive namely python2.7 and python3 . Following was my code :

#!usr/bin/python

f = open('lines.txt')
for line in f.readlines():
        print(line,end ='')

when i run it by the command python lines.py I got the following error

#!usr/bin/python

f = open('lines.txt')
for line in f.readlines():
        print(line,end ='')

when I run it by the command python3 lines.py I executed successfully

First of all, you're missing a quote at the beginning but this is probably a copy/paste error.

In Python 3.x, the end=' ' part will place a space after the displayed string instead of a newline. To do the same thing in Python 2.x, you'd put a comma at the end:

print "Building internam Index for %d tile(s) ..." % len(inputTiles),

Try this one if you are working with python 2.7:

from __future__ import print_function

It looks like you're just missing an opening double-quote. Try:

if Verbose:
   print("Building internam Index for %d tile(s) ..." % len(inputTiles), end=' ')

I think he's using Python 3.0 and you're using Python 2.6.

Compatible with both Python 2 & 3:

sys.stdout.write('mytext')

Compatible with only Python 2

print 'mytext',

Compatible with only Python 3

print('mytext', end='')

This is just a version thing. Since Python 3.x the print is actually a function, so it now takes arguments like any normal function.

The end=' ' is just to say that you want a space after the end of the statement instead of a new line character. In Python 2.x you would have to do this by placing a comma at the end of the print statement.

For example, when in a Python 3.x environment:

while i<5:
    print(i)
    i=i+1

Will give the following output:

0
1
2
3
4

Where as:

while i<5:
    print(i, end = ' ')
    i=i+1

Will give as output:

0 1 2 3 4

I think the author probably meant:

if Verbose:
   print("Building internam Index for %d tile(s) ..." % len(inputTiles), end=' ')

He's missing an initial quote after print(.

Note that as of Python 3.0, print is a function as opposed to a statement, if you're using older versions of Python the equivalent would be:

print "Building internam Index for %d tile(s) ..." % len(inputTiles)

The end parameter means that the line gets ' ' at the end rather than a newline character. The equivalent in earlier versions of Python is:

print "Building internam Index for %d tile(s) ..." % len(inputTiles),

(thanks Ignacio).

we need to import a header before using end='', as it is not included in the python's normal runtime.

from __future__ import print_function

it shall work perfectly now

In python 2.7 here is how you do it

mantra = 'Always look on the bright side of life'
for c in mantra: print c,

#output
A l w a y s   l o o k   o n   t h e   b r i g h t   s i d e   o f   l i f e

In python 3.x

myjob= 'hacker'
for c in myjob: print (c, end=' ')
#output 
h a c k e r 

Basically, it occurs in python2.7 here is my code of how it works:

  i=5
while(i):
    print i,
    i=i-1
Output:
5 4 3 2 1

How about this:

#Only for use in Python 2.6.0a2 and later
from __future__ import print_function

This allows you to use the Python 3.0 style print function without having to hand-edit all occurrences of print :)