[Bug 1722397] [NEW] idle doesn't run in 17.10

[Serhiy Storchaka]

Public bug reported:

In 17.10 the idle package (v. 3.6.3-0ubuntu1) depends on Python 3.6. But
the /usr/bin/idle script contains the code that doesn't work in Python
3.6.

$ idle
Traceback (most recent call last):
  File "/usr/bin/idle", line 3, in <module>
    from idlelib.PyShell import main
ModuleNotFoundError: No module named 'idlelib.PyShell'

In Python 3.6 the PyShell module was renamed to pyshell (see
https://bugs.python.org/issue24225).

/usr/bin/idle-python3.6 from the idle-python3.6 package works correctly.

Maybe make /usr/bin/idle just a link to /usr/bin/idle-python3.6?

If you want /usr/bin/idle always run the default python3 and don't
depent of future changes in the idlelib Python package, you can make it
a shell script:

#! /bin/sh
exec /usr/bin/python3 -m idlelib

** Affects: python3-defaults (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1722397

Title:
  idle doesn't run in 17.10

Status in python3-defaults package in Ubuntu:
  New

Bug description:
  In 17.10 the idle package (v. 3.6.3-0ubuntu1) depends on Python 3.6.
  But the /usr/bin/idle script contains the code that doesn't work in
  Python 3.6.

  $ idle
  Traceback (most recent call last):
    File "/usr/bin/idle", line 3, in <module>
      from idlelib.PyShell import main
  ModuleNotFoundError: No module named 'idlelib.PyShell'

  In Python 3.6 the PyShell module was renamed to pyshell (see
  https://bugs.python.org/issue24225).

  /usr/bin/idle-python3.6 from the idle-python3.6 package works
  correctly.

  Maybe make /usr/bin/idle just a link to /usr/bin/idle-python3.6?

  If you want /usr/bin/idle always run the default python3 and don't
  depent of future changes in the idlelib Python package, you can make
  it a shell script:

  #! /bin/sh
  exec /usr/bin/python3 -m idlelib

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