P3 weird sys.stdout.write()

[Jerzy Jalocha N]

I've stumbled upon the following in Python 3:

Python 3.0.1+ (r301:69556, Apr 15 2009, 15:59:22)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
write() is appending the length of the string to it's output. That's
not how it worked in 2.6.

What's the reason for this? Is this intended? I couldn't find a bug
report for this.

 

[Diez B. Roggisch]

I've stumbled upon the following in Python 3:

Python 3.0.1+ (r301:69556, Apr 15 2009, 15:59:22)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
write() is appending the length of the string to it's output. That's
not how it worked in 2.6.

What's the reason for this? Is this intended? I couldn't find a bug
report for this.

Write returns the number of bytes written. And because you don't capture
that output into a variable, the interpreter puts it out as well.

If you do

instead, you won't see the behavior.

Diez

 

[André]

I've stumbled upon the following in Python 3:

Python 3.0.1+ (r301:69556, Apr 15 2009, 15:59:22)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
something9

write() is appending the length of the string to it's output.

Not quite right, see below.

That's
not how it worked in 2.6.

What's the reason for this? Is this intended? I couldn't find a bug
report for this.

I don't know what the reason for the change, but try the following:
5


What you are seeing is the concatenation of the return value of the
write() method with its output.

André