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Cannot print greek letters in Python 2.6

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  Cannot print greek letters in Python 2.6 mefistofelis@gmail.com - 2013-11-28 14:22 -0800
    Re: Cannot print greek letters in Python 2.6 Chris Angelico <rosuav@gmail.com> - 2013-11-29 09:48 +1100
    Re: Cannot print greek letters in Python 2.6 Terry Reedy <tjreedy@udel.edu> - 2013-11-28 20:46 -0500
    Re: Cannot print greek letters in Python 2.6 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-29 03:48 +0000

#60738 — Cannot print greek letters in Python 2.6

I have the following script however when the clipboard contents are greek letters it fails to print them right.
I have used all posible encoding for greek letters including utf8 but to no avail so i just stay with latin1.

Can you suggest a solution?

Here is the script:

import win32clipboard
win32clipboard.OpenClipboard()
data = win32clipboard.GetClipboardData()
win32clipboard.CloseClipboard()
data = data.decode('latin1')
send = 'ccc|=:='+data
print data
print send 

The following script is running from eventghost programm.

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#60741

On Fri, Nov 29, 2013 at 9:22 AM,  <mefistofelis@gmail.com> wrote:
> I have the following script however when the clipboard contents are greek letters it fails to print them right.
> I have used all posible encoding for greek letters including utf8 but to no avail so i just stay with latin1.

You need to know what encoding is actually being used. Attempting to
decode using arbitrary encodings is doomed to failure. Possibly
Windows is using some kind of global default encoding, or possibly you
can query the other program for its encoding, but you're unlikely to
succeed by pointing the decode gun in random directions and firing.

Incidentally, you may find things easier if you switch to Python 3.3 -
quite a bit of Unicode handling is improved in Py3.

As a separate point, can you please use something better than Google
Groups for posting? There are many far better clients than GG, or you
can use the mailing list instead:

https://mail.python.org/mailman/listinfo/python-list

Google Groups is buggy and should not be used.

ChrisA

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#60747

On 11/28/2013 5:48 PM, Chris Angelico wrote:
> On Fri, Nov 29, 2013 at 9:22 AM,  <mefistofelis@gmail.com> wrote:
>> I have the following script however when the clipboard contents are
>> greek letters it fails to print them right. I have used all posible
>> encoding for greek letters including utf8 but to no avail so i just
>> stay with latin1.

When you use a 3rd patch module like 'win32clipboard', you should give a 
url for the source or doc. Were you using
http://docs.activestate.com/activepython/2.4/pywin32/win32clipboard.html

There are other programs on Pypi, such as pyclip.

> You need to know what encoding is actually being used. Attempting to
> decode using arbitrary encodings is doomed to failure. Possibly
> Windows is using some kind of global default encoding, or possibly
> you can query the other program for its encoding, but you're unlikely
> to succeed by pointing the decode gun in random directions and
> firing.

Searching "windows clipboard encoding" return pages such as
http://stackoverflow.com/questions/1929812/how-does-cut-and-paste-affect-character-encoding-and-what-can-go-wrong
http://msdn.microsoft.com/en-us/library/windows/desktop/ms649015%28v=vs.85%29.aspx
http://www.dmst.aueb.gr/dds/sw/outwit/winclip.html

These suggest that there should be utf-8 and/or utf-16le versions of any 
text pasted.

http://docs.activestate.com/activepython/2.4/pywin32/win32clipboard__GetClipboardData_meth.html
say you could use
GetClipboardData(CF_UNICODETEXT)
which should reliably give you utf-16le.
I get the impression that CF_TEXT should be utf-8 but might not be.

EnumClipboardFormats
will let you see what is available.

> Incidentally, you may find things easier if you switch to Python 3.3
> - quite a bit of Unicode handling is improved in Py3.

At least use the *latest* version of 2.7 to get whatever unicode fixes 
that have been made to 2.x.

-- 
Terry Jan Reedy

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#60757

On Thu, 28 Nov 2013 14:22:01 -0800, mefistofelis wrote:

> I have the following script however when the clipboard contents are
> greek letters it fails to print them right. I have used all posible
> encoding for greek letters including utf8 but to no avail so i just stay
> with latin1.
> 
> Can you suggest a solution?
> 
> Here is the script:
> 
> import win32clipboard
> win32clipboard.OpenClipboard()
> data = win32clipboard.GetClipboardData()
> win32clipboard.CloseClipboard()
> data = data.decode('latin1')

That cannot possibly work, since there are no Greek letters in Latin1. If 
you run this piece of code, you will see no Greek letters except for µ 
MICRO SIGN.


import unicodedata
for i in range(256):
    c = chr(i).decode('latin-1')
    print c, unicodedata.name(c, "<no name>")


I'm not an expert on Windows, but my guess is that the data coming out of 
the clipboard could be using one of these encodings:

ISO-8859-7  # The code page used by some Greek versions of Windows.
UTF-16be
UTF-16
UTF-8


I'd try ISO-8859-7 and UTF-16be first, like this:

import win32clipboard
win32clipboard.OpenClipboard()
data = win32clipboard.GetClipboardData()
win32clipboard.CloseClipboard()
data = data.decode('UTF-16BE')



-- 
Steven

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