[issue10531] write tilted text in turtle

[Yingjie]

New submission from Yingjie :

First of all, I'd like to express my deep gratidute to the author of this 
module, it is such a fun module to work with and to teach python as a first 
programming language.

Secondly, I would like to request a feature if it is not too hard to achieve. 
Currently, you can only write texts horizontally, no matter what is the current 
orientation of the turtle pen. I wonder if it is possible to write text in any 
direction when we control the heading of the turtle? For example, the following 
code would write a vertically oriented text:

>>> setheading(90) #turtle facing up
>>> write("vertical text!")

Thanks a lot!

Yingjie

--
components: Library (Lib)
messages: 122379
nosy: lanyjie
priority: normal
severity: normal
status: open
title: write tilted text in turtle
type: feature request
versions: Python 3.2

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[issue10532] A bug related to matching the empty string

[Yingjie]

New submission from Yingjie :

Here are some puzzling results I have got (I am using Python 3, I suppose 
similar results for python 2).

When I do the following, I got an exception:
>>> re.findall('(d*)*', 'adb')
>>> re.findall('((d)*)*', 'adb')

When I do this, I am fine but the result is wrong:
>>> re.findall('((.d.)*)*', 'adb')
[('', 'adb'), ('', '')]

Why is it wrong?

The first mactch of groups:
('', 'adb')
indicates the outer group ((.d.)*) captured
the empty string, while the inner group (.d.)
captured 'adb', so the outer group must have
captured the empty string at the end of the
provided string 'adb'.

Once we have matched the final empty string '',
there should be no more matches, but we got
another match ('', '')!!!

So, findall matched the empty string in
the end of the string twice!!!

Isn't this a bug?

Yingjie

--
components: Regular Expressions
messages: 122380
nosy: lanyjie
priority: normal
severity: normal
status: open
title: A bug related to matching the empty string
versions: Python 3.2

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[issue10532] A bug related to matching the empty string

[Yingjie]

Changes by Yingjie :


--
type:  -> behavior

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