python3 variable type declaration syntax error

Question

Why does the : syntax not work on linux

On MacOS

→ python3
Python 3.6.3 (default, Oct  4 2017, 06:09:38) 
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.37)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> x : str = "hello"
>>>

On Linux

→ python3
Python 3.5.3 (default, Jan 19 2017, 14:11:04) 
[GCC 6.3.0 20170118] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> x : str = "hello"
  File "<stdin>", line 1
    x : str = "hello"
      ^
SyntaxError: invalid syntax
>>>

What makes you think the OS has anything to do with what version of Python you have installed? — Mad Physicist
– Mad Physicist, Commented Jan 9, 2018 at 3:57
I've 3.5.2 and I can't get it to work on MacOS.. seems like it is something to do with the version of python — Ajjo
– Ajjo, Commented Jan 9, 2018 at 4:00

Sayan Sil · Accepted Answer · 2018-01-09 03:54:46Z

2

It is the problem with the python version. Try the same with 3.6 in linux.

answered Jan 9, 2018 at 3:54

Sayan Sil

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Ajjo · Accepted Answer · 2018-01-09 04:02:23Z

1

Its the version of python that is causing this. Update to 3.6 on Linux as well. Check release notes

Whats new in 3.6

answered Jan 9, 2018 at 4:02

Ajjo

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