Revert of Update Python style guide to point out exceptions only apply to legacy scripts

Revert of Update Python style guide to point out exceptions only apply to legacy scripts (patchset #3 id:40001 of https://codereview.chromium.org/2626863005/ )

Reason for revert:
This doesn't only apply to legacy scripts; revert pending real discussion somewhere.

Original issue's description:
> Update Python style guide to point out exceptions only apply to legacy scripts
> 
> Review-Url: https://codereview.chromium.org/2626863005
> Cr-Commit-Position: refs/heads/master@{#444608}
> Committed: https://chromium.googlesource.com/chromium/src/+/27e7d60bc5bb4afb081116e39905aa66e7cf2489

TBR=brettw@chromium.org,ktyliu@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2819823002
Cr-Commit-Position: refs/heads/master@{#464725}
Committed: https://chromium.googlesource.com/chromium/src/+/3dcdf861ebac234cefd56a8c6b488b628b77edd3

[Nico, 2017-04-14 14:15:41]

The CQ bit was checked by thakis@chromium.org

[Nico, 2017-04-14 14:15:41]

Created Revert of Update Python style guide to point out exceptions only apply
to legacy scripts

[commit-bot: I haz the power, 2017-04-14 14:15:55]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-04-14 14:24:44]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1492179341322410, "parent_rev":
"2894d3bd6f22f18804bcd6c927a598c662f0547c", "commit_rev":
"3dcdf861ebac234cefd56a8c6b488b628b77edd3"}

[commit-bot: I haz the power, 2017-04-14 14:25:37]

Description was changed from

==========
Revert of Update Python style guide to point out exceptions only apply to legacy
scripts (patchset #3 id:40001 of https://codereview.chromium.org/2626863005/ )

Reason for revert:
This doesn't only apply to legacy scripts; revert pending real discussion
somewhere.

Original issue's description:
> Update Python style guide to point out exceptions only apply to legacy scripts
> 
> Review-Url: https://codereview.chromium.org/2626863005
> Cr-Commit-Position: refs/heads/master@{#444608}
> Committed:
https://chromium.googlesource.com/chromium/src/+/27e7d60bc5bb4afb081116e39905...

TBR=brettw@chromium.org,ktyliu@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
==========

to

==========
Revert of Update Python style guide to point out exceptions only apply to legacy
scripts (patchset #3 id:40001 of https://codereview.chromium.org/2626863005/ )

Reason for revert:
This doesn't only apply to legacy scripts; revert pending real discussion
somewhere.

Original issue's description:
> Update Python style guide to point out exceptions only apply to legacy scripts
> 
> Review-Url: https://codereview.chromium.org/2626863005
> Cr-Commit-Position: refs/heads/master@{#444608}
> Committed:
https://chromium.googlesource.com/chromium/src/+/27e7d60bc5bb4afb081116e39905...

TBR=brettw@chromium.org,ktyliu@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2819823002
Cr-Commit-Position: refs/heads/master@{#464725}
Committed:
https://chromium.googlesource.com/chromium/src/+/3dcdf861ebac234cefd56a8c6b48...
==========

[commit-bot: I haz the power, 2017-04-14 14:25:39]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/3dcdf861ebac234cefd56a8c6b48...