sys.stderr.write returns string length in Python 3

[Alan G Isaac]

Is this new behavior intentional? ::

>>sys.stderr.write("thisisatest\n")

thisisatest
12

Here is the reason for it:

>>help(sys.stderr.write)

Help on method write in module io:
write(self, s: str) method of io.TextIOWrapper instance

Thank you,
Alan Isaac

[Benjamin]

Alan G Isaac wrote:

Is this new behavior intentional? ::

Yes, it's in the PEP http://www.python.org/dev/peps/pep-3116/.

>
>>sys.stderr.write("thisisatest\n")
thisisatest
12

Here is the reason for it:

>>help(sys.stderr.write)
Help on method write in module io:
write(self, s: str) method of io.TextIOWrapper instance

Thank you,
Alan Isaac

[Alan G Isaac]

Benjamin wrote:

http://www.python.org/dev/peps/pep-3116/.

Thanks.
Can you give me an example of using the returned value?
Alan

[Fredrik Lundh]

Alan G Isaac wrote:

Can you give me an example of using the returned value?

it's for consistency with stream objects that support raw I/O (as
described in the PEP). when using buffered I/O, you can ignore it.

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