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Author vstinner
Recipients Arfrever, benjamin.peterson, docs@python, martin.panter, r.david.murray, rhettinger, serhiy.storchaka, vstinner, zbysz
Date 2017-03-27.11:14:00
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
I created to change struct.Struct.format type to str (Unicode).

struct.Struct() accepts bytes and str format strings, so it's not really a backward incompatible change.

It's just a minor enhancement to help development:

$ ./python
Python 3.7.0a0 (heads/master-dirty:b8a7daf, Mar 27 2017, 13:02:20) 
>>> print(struct.Struct('hi').format)

Without the patch:

haypo@selma$ python3
Python 3.5.2 (default, Sep 14 2016, 11:28:32) 
[GCC 6.2.1 20160901 (Red Hat 6.2.1-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import struct
>>> print(struct.Struct('hi').format)

haypo@selma$ python3 -bb
Python 3.5.2 (default, Sep 14 2016, 11:28:32) 
>>> import struct
>>> print(struct.Struct('hi').format)
Traceback (most recent call last):
BytesWarning: str() on a bytes instance
Date User Action Args
2017-03-27 11:14:00vstinnersetrecipients: + vstinner, rhettinger, benjamin.peterson, Arfrever, r.david.murray, zbysz, docs@python, martin.panter, serhiy.storchaka
2017-03-27 11:14:00vstinnersetmessageid: <>
2017-03-27 11:14:00vstinnerlinkissue21071 messages
2017-03-27 11:14:00vstinnercreate