jenkins-bot has submitted this change. ( 
https://gerrit.wikimedia.org/r/c/pywikibot/core/+/816838 )

Change subject: [BUGFIX] Allow Exception as parameter of 
pywikibot.exceptions.Error
......................................................................

[BUGFIX] Allow Exception as parameter of pywikibot.exceptions.Error

Exceptions may be parameters of Exceptions calls. You can do this

 def f():
     try:
         1/0
     except ZeroDivisionError as e:
         raise RuntimeError(e)

 try:
     f()
 except Exception as e:
     print('### {} ###'.format(e))

Trying this with pywikibot.Error lead to a
TypeError: __str__ returned non-string

Therefore enable Exception as parameter of pywikibot.Error

Change-Id: Ib53dc2d53fa27d2a7d15e3e959837e00f6499e72
---
M pywikibot/exceptions.py
1 file changed, 2 insertions(+), 2 deletions(-)

Approvals:
  Mpaa: Looks good to me, approved
  jenkins-bot: Verified



diff --git a/pywikibot/exceptions.py b/pywikibot/exceptions.py
index 2e2df94..835f25e 100644
--- a/pywikibot/exceptions.py
+++ b/pywikibot/exceptions.py
@@ -193,9 +193,9 @@

     """Pywikibot error."""

-    def __init__(self, arg: str) -> None:
+    def __init__(self, arg: Union[Exception, str]) -> None:
         """Initializer."""
-        self.unicode = arg
+        self.unicode = str(arg)

     def __str__(self) -> str:
         """Return a string representation."""

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Gerrit-Project: pywikibot/core
Gerrit-Branch: master
Gerrit-Change-Id: Ib53dc2d53fa27d2a7d15e3e959837e00f6499e72
Gerrit-Change-Number: 816838
Gerrit-PatchSet: 1
Gerrit-Owner: Xqt <[email protected]>
Gerrit-Reviewer: Mpaa <[email protected]>
Gerrit-Reviewer: jenkins-bot
Gerrit-MessageType: merged
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