trac-admin fails on Python 3

[cyril.schmidt@…]

Trac version 1.2.2 for Windows, installed by the binary installer, fails in trac-admin with the error error message shown below.

The python version is Python 3.5.2 :: Anaconda 4.2.0 (64-bit)

I believe the cause is that the 0666 notation for octals is not valid anymore in Python 3, it should have been 0o666.

Error message:

>trac-admin --version
Traceback (most recent call last):
  File "D:\Anaconda3\Scripts\trac-admin-script.py", line 11, in <module>
    load_entry_point('Trac==1.2.2', 'console_scripts', 'trac-admin')()
  File "D:\Anaconda3\lib\site-packages\setuptools-27.2.0-py3.5.egg\pkg_resources
\__init__.py", line 565, in load_entry_point
  File "D:\Anaconda3\lib\site-packages\setuptools-27.2.0-py3.5.egg\pkg_resources
\__init__.py", line 2598, in load_entry_point
  File "D:\Anaconda3\lib\site-packages\setuptools-27.2.0-py3.5.egg\pkg_resources
\__init__.py", line 2258, in load
  File "D:\Anaconda3\lib\site-packages\setuptools-27.2.0-py3.5.egg\pkg_resources
\__init__.py", line 2264, in resolve
  File "D:\Anaconda3\lib\site-packages\trac\admin\__init__.py", line 14, in <mod
ule>
    from trac.admin.api import *
  File "D:\Anaconda3\lib\site-packages\trac\admin\api.py", line 20, in <module>
    from trac.util.text import levenshtein_distance
  File "D:\Anaconda3\lib\site-packages\trac\util\__init__.py", line 258
    return path, os.fdopen(os.open(path, flags, 0666), 'w')
                                                   ^
SyntaxError: invalid token

[Jun Omae]

Duplicate of #10083 and #12130.

[rr.kampen@…]

Am I to understand Trac will not work with Python 3.7?

C:\Windows\system32>trac-admin C:\ initenv
Traceback (most recent call last):
  File "C:\Users\Gebruiker\AppData\Local\Programs\Python\Python37\Scripts\trac-admin-script.py", line 11, in <module>
    load_entry_point('Trac==1.2.3', 'console_scripts', 'trac-admin')()
  File "C:\Users\Gebruiker\AppData\Local\Programs\Python\Python37\lib\site-packages\pkg_resources\__init__.py", line 487, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "C:\Users\Gebruiker\AppData\Local\Programs\Python\Python37\lib\site-packages\pkg_resources\__init__.py", line 2728, in load_entry_point
    return ep.load()
  File "C:\Users\Gebruiker\AppData\Local\Programs\Python\Python37\lib\site-packages\pkg_resources\__init__.py", line 2346, in load
    return self.resolve()
  File "C:\Users\Gebruiker\AppData\Local\Programs\Python\Python37\lib\site-packages\pkg_resources\__init__.py", line 2352, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "C:\Users\Gebruiker\AppData\Local\Programs\Python\Python37\lib\site-packages\trac\admin\__init__.py", line 14, in <module>
    from trac.admin.api import *
  File "C:\Users\Gebruiker\AppData\Local\Programs\Python\Python37\lib\site-packages\trac\admin\api.py", line 20, in <module>
    from trac.util.text import levenshtein_distance
  File "C:\Users\Gebruiker\AppData\Local\Programs\Python\Python37\lib\site-packages\trac\util\__init__.py", line 258
    return path, os.fdopen(os.open(path, flags, 0666), 'w')
                                                   ^
SyntaxError: invalid token

[Jun Omae]

Am I to understand Trac will not work with Python 3.7?

You can check Mandatory Dependencies in TracInstall page for Trac 1.2. It describes Python, version ≥ 2.6 and < 3.0.