Python SyntaxError: invalid syntax end=''

Question

I am studying the book "Head First Python" and I'm having trouble this code:

data = open('sketch.txt')

for each_line in data:
    (role, line_spoken) = each_line.split(':')
    print(role, end='')
    print(' said: ', end='')
    print(line_spoken, end='')

data.close()

Error:

  File "Aula 3.py", line 12
      print(role, end='')
               ^
SyntaxError: invalid syntax

sketch.txt:

Man: Is this the right room for an argument?
Other Man: I've told you once.
Man: No you haven't!
Other Man: Yes I have.
Man: When?
Other Man: Just now.
Man: No you didn't!
Other Man: Yes I did!
Man: You didn't!
Other Man: I'm telling you, I did!
Man: You did not!
Other Man: Oh I'm sorry, is this a five minute argument, or the full half hour?
Man: Ah! (taking out his wallet and paying) Just the five minutes.
Other Man: Just the five minutes. Thank you.
Other Man: Anyway, I did.
Man: You most certainly did not!
Other Man: Now let's get one thing quite clear: I most definitely told you!
Man: Oh no you didn't!
Other Man: Oh yes I did!
Man: Oh no you didn't!
Other Man: Oh yes I did!
Man: Oh look, this isn't an argument!
(pause)
Other Man: Yes it is!
Man: No it isn't!

I'm two days trying to figure out why the code is not working. The error is always shown in "end =''".

You're not using Python 3.

Wooble
– Wooble

2013-11-19 14:05:55 +00:00
Commented Nov 19, 2013 at 14:05 — Wooble
– Wooble, Commented Nov 19, 2013 at 14:05
Install Python 3, and make sure you're running it

Antti Haapala
– Antti Haapala

2015-05-01 07:13:47 +00:00
Commented May 1, 2015 at 7:13 — Antti Haapala
– Antti Haapala, Commented May 1, 2015 at 7:13

falsetru · Accepted Answer · 2013-11-19 14:06:09Z

43

It seems like you're using Python 2.x, not Python 3.x.

Check your python version:

>>> import sys
>>> sys.version
'2.7.5 (default, May 15 2013, 22:44:16) [MSC v.1500 64 bit (AMD64)]'
>>> print(1, end='')
  File "<stdin>", line 1
    print(1, end='')
                ^
SyntaxError: invalid syntax

In Python 3.x, it should not raise Syntax Error:

>>> import sys
>>> sys.version
'3.3.2 (v3.3.2:d047928ae3f6, May 16 2013, 00:06:53) [MSC v.1600 64 bit (AMD64)]'
>>> print(1, end='')
1>>>

answered Nov 19, 2013 at 14:06

falsetru

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2 Comments

falsetru Over a year ago

@Venkatesh, By adding the following line at the first line of the code, you can use print as a function like Python 3.x: from __future__ import print_function

karuhanga Over a year ago

if you're sure about installing python3 you can be more explicit when calling it, i.e python3 program.py

Teddy · Accepted Answer · 2014-11-07 02:00:05Z

9

>>> import sys
>>> print(sys.version)
2.7.8 (default, Jun 30 2014, 16:08:48) [MSC v.1500 64 bit (AMD64)]
>>> from __future__ import print_function
>>> print(1, end=',')
1,

answered Nov 7, 2014 at 2:00

Teddy

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Comments

Christopher Adams · Accepted Answer · 2017-05-20 16:01:18Z

4

If you're running it from the command line you may also just need to use the python3 command instead of just python command such as:

python3 MyFile.py

answered May 20, 2017 at 16:01

Christopher Adams

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Comments

kajal siyat · Accepted Answer · 2016-12-25 06:34:12Z

1

when you use eclipse editor,just typed like this,

from __future__ import print_function

for i in range(0,5):
    for j in range(0,i):
        print(j, end='')
    print()

answered Dec 25, 2016 at 6:34

kajal siyat

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Comments

Donald Duck is with Ukraine · Accepted Answer · 2017-06-11 10:46:55Z

1

If you are sure you have Python 3+ intalled, type this as first line in your .py file:

#!/usr/bin/python3.x  <<----- where x is your installed version.

Example: I start the file with: #!/usr/bin/python3.5 (because I have 3.5 installed)

edited Jun 11, 2017 at 10:46

Donald Duck is with Ukraine

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answered Jun 11, 2017 at 6:23

user8143631

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3 Comments

user8143631 Over a year ago

#!/usr/bin/python3.5

Arya McCarthy Over a year ago

Why not just use #!/usr/bin/python3, which should be symlinked to a valid Python 3 version, making it more general? Anyway, this only works if you invoke it as ./myfile.py, not python myfile.py.

Hutch Over a year ago

Or type "Python --version" into your command prompt and providing you have the environment variables setup you will see your version number.

LW001 · Accepted Answer · 2017-11-09 18:34:49Z

1

I was having the same problem with Eclipse and IntelliJ IDEA, just solved it on Eclipse. Preferences with PyDev--interpreter had added Python 3.6 but the native Python on my Mac OS X was above the new install of the Python 3.6. So simply moving up the 3.6 in the interpreter solved my problem.

End result

edited Nov 9, 2017 at 18:34

LW001

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answered Nov 9, 2017 at 18:04

John G.

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Comments

Chris · Accepted Answer · 2020-10-23 08:14:11Z

1

Had the same issue while using Python 2.7 and 3.x parallel although 3.x is set as default. Because my PyInstaller from Python 3.x was removed (don't know why) the other one used. Reinstall PyInstaller solved the problem. Note that PyInstaller shows the used versions in the beginning of its output:

61 INFO: PyInstaller: 3.5
61 INFO: Python: 2.7.16

answered Oct 23, 2020 at 8:14

Chris

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