In article <[EMAIL PROTECTED]>,
Jim Segrave <[EMAIL PROTECTED]> wrote:
>except OSError, e:
>if e.errno != errno.EEXIST:
this should read:
if e.errno != errno.ENOENT:
(it was left with EEXIST from testing this code by forcing an error,
as
quot; % (lockfile, max_wait,
pid))
# it's not been locked too long, wait a while and retry
f.close()
time.sleep(1)
# if we get here. we have the lockfile. Convert the os.open file
# descriptor into a Python file object and record our PID
that they are
all properly closed (or, in the case of Python, if you don't
explicitly close them, that any references to the files cease to exist
after the script runs). I'd personally recommend explicit closing
here.
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^^^
entire regular expression. This is useful if you wish to include
^
the flags as part of the regular expression, instead of passing a
flag argument to the compile() function.
Some regex packages, but not Python's, support (?-) and this
allows turning the flag off and on for parts of the regex.
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ugmented version.
$ cat x.py
def getindex(ind = 0):
print 'getindex() called'
return ind
a = [0, 1, 2, 3, 4, 5]
a[getindex(0)] = a[getindex(0)] + 17
print a
a[getindex(1)] += 22
print a
$ python x.py
getindex() called
getindex() called
[17, 1, 2, 3, 4, 5]
getindex() called
[17
on of Python, then you'll need to figure out how to build and
incorporate a Python extension which can detect this situation
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eyz = counters.keys()
keyz.sort()
for k in keyz:
print k, counters[k]
Takes care of IndexError and ValueError. It does not report keys that
don't get incremented. If that's important, then initalise counters as
in the quoted posting.
For Python 2.4 and later, you can replace the keyz =
until the
previous command has been processed. Once you transfer data to your
machine's network stack, there's no way to stop it being sent to the
remote end - in fact there's no practical way to determine if it's
been put in a packet, sent to the remote end and lost or put in
p of a machine (OS installation or
whatever), our solution was to have a post-install CD or floppy which
fetched standard server configuration data. This included an ssh
public key for our ssh-key distribution, so after running the
post-install disc, we could push out staff ssh-keys and logins were
either literals or lists
> if type(item) == ListType:
Might you be better off asking if item has a __getitem__? It would
then work with tuples and Extending to dictionaries would then be easier
>def isReportTemplate(obj):
>"""Return 1 if obj is an instance of class ReportTemplate.
>"""
>if type(obj) == InstanceType and \
>string.find(`obj.__class__` , ' ReportTemplate ') > -1:
>return 1
>else:
>return 0
Why not just use isinstance(obj, classname)?
>###
># ColumnReportTemplate #
>###
>
>class ColumnReportTemplate:
>"""This class allows one to specify column oriented output formats.
>
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In article <[EMAIL PROTECTED]>,
Paul McGuire <[EMAIL PROTECTED]> wrote:
>"Jim Segrave" <[EMAIL PROTECTED]> wrote in message
>news:[EMAIL PROTECTED]
>
>I can see that the OP omitted the concept of "@|||" centering, since the
>Python string int
In article <[EMAIL PROTECTED]>,
Paul McGuire <[EMAIL PROTECTED]> wrote:
>"Jim Segrave" <[EMAIL PROTECTED]> wrote in message
>news:[EMAIL PROTECTED]
>> In article <[EMAIL PROTECTED]>,
>> Paul McGuire <[EMAIL PROTECTED]> wrote:
>>
&
e definition of the
>formatters variable.
>
>Pyparsing's project wiki is at http://pyparsing.wikispaces.com.
If fails for floats specified as ###. or .###, it outputs an integer
format and the decimal point separately. It also ignores \# which
should prevent the '#' from being inc
vowel uppercase:
import string
trans_table = string.maketrans('aeiou', 'AEIOU')
"I don't know, but can be this feature included into".translate(trans_table)
prints:
"I dOn't knOw, bUt cAn bE thIs fEAtUrE InclUdEd IntO"
That more than addresses y
: , integer # integer at end #
Result: integer: %4d, integer %1d integer at end %1d
Testing: float .## no decimals ###. no int .### at end ###.
Result: float %7.2f no decimals %4.0f no int %4.3f at end %4.0f
Testing: Left string <<<<<< short left string <
Result: Left string %-6s short left string %-1s
Testing: right string >>>>>> short right string >
Result: right string %6s short right string %1s
Testing: escaped chars \ \.## \<\<<<< \>\><<<
Result: escaped chars \#%3d \#%6.2f \<\<%-3s \>\>%-3s
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Useless Python
<http://www.uselesspython.com/download.php?script_id=108>.
*Apse*
An extension module (written in C): Apse
<http://www.personal.psu.edu/staff/i/u/iua1/python/apse/>.
Requires python, SWIG, and a C compiler
*Java*
SecondString <http://sourceforge.net/projects/secondstring/> is an
open source package with Java implementations of a large number of
string comparision algorithms. They should not be too difficult to
port to Python.
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In article <[EMAIL PROTECTED]>,
Tim Peters <[EMAIL PROTECTED]> wrote:
>[Jim Segrave]
>> Actually, presorted lists are not a bad case for heapsort - it's quite
>> immune to any existing order or lack thereof,
>
>Write a heapsort and time it. It's not a d
27;s quite
immune to any existing order or lack thereof, whereas some other
sorts, quicksort being a prime example, require great care to
avoid pathological cases.
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xt = "Row: %d\nCol: %d" % (row, col),
bg = "#%02x%02x%02x" % ((row * 4 + col) * 16,
(row * 4 + col) * 16,
(row * 4 + col) * 16),
fg = "#ff"
).grid(row =
didn't see the right way to iterate over
the supplied list inside the function, wheras he did. It's short,
simple and correct.
If you really wanted to return 'spam' or an exception in his solution,
it's a simple if statement at the start of the function.
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, 9], [12, 14], [15, 16]]
Fails on an empty list, as tmp is not defined when it hits the yield
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tmp, valinc];
>tmp = val
>valinc = val+1
>yield [tmp, valinc]
Still fails when passed an empty list, the initial assignment to tmp
is an IndexError
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t now works, but returns [0, 0] when passed an empty list, when it
should return nothing at all
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tinue
if __name__ == '__main__':
for l in [[3, 6, 7, 8, 12, 13, 15], [2], []]:
print l, "=>", [lst for lst in IterInterval(l)]
/usr/home/jes% python interval.py
[3, 6, 7, 8, 12, 13, 15] => [[3, 4], [6, 9], [12, 14], [15, 16]]
[3] => [[3, 4]]
[] => []
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which works at the moment of comaprision is already there
- that's what == does.
If you really think there's a need for a comparision which includes
dealing with aliasing, then it seems to me a python module with a
set of functions for comparisions would make more sense.
--
f analysiing nested structures -
if you have a tuple, containing tuples which contain lists, then are
those top level tuples 'equal' if there are aliases in the lists? How
many levels deep should an equality test go?
Does the more common test, to see if the elements of a sequence a
er the file
object, as follows, works - it now generates
a a
...
a z
b a
...
z z
class FileReIterable2(object):
def __init__(self, file):
self.file = open(file, 'rU')
def __iter__(self):
self.file.seek(0)
while True:
line = self.f
In article <[EMAIL PROTECTED]>,
softwindow <[EMAIL PROTECTED]> wrote:
[some context restored]
>> Sometimes you add records but the size of the database does not
>> change... :-)
>really
>
>in which case?
whenever the database is big enough to add them without i
ope/geocoord/32.32,42,12
>
>By using \1\2\4 as replace. I'm open for other suggestions to achieve
>this!
But you're looking for a string followed by two floats and your sample
input is a string, a float, an integer, a comma and another
integer. If you actually mean the input i
est practice. Suggestions
>welcomed.
I'm puzzled - a daemonised program normally closes stdin/stdout/stderr
and disconnects from its controlling terminal, so where is its output
going?
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size after a delay period, assume all the data is there.
This isn't a good method, but it's simple to implement and will reduce
the occurrence of attempts to process a file which is still in
transit/
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t the
code itself works to create cascading auto-pop-up menus, or any other
widget you want to pop-up as part of a menu.
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Max number Notes
...
to 0 1
cc 0 1
bcc 0 1
...
So the answere is, that it's not required to have any destinations
listed in the headers of the message.
It appears that it's not kosher to have an empty
r mail client)
Much as it pains me to admit it, Outlook, for all its many faults is
correct if it allows sending messages where the To: CC: and or Bcc:
headers are empty.
--
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t;".strip() == " ".strip()
>True
>>>>
>
> So... Your mixed C/Python simplifies to just...
>
> if str.strip(): # after removing leading/trailing spaces,
> # if not empty, do something
str = " "
and
str = "\t"
fail with your substitution - the OP was looking only for strings
containing one space or empty strings. Tab characters and multi-spaces
would not match.
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74 49.00
7: 21 50.25
8: 78 51.25
9: 28 50.25
10: 32 39.75
11: 93 57.75
12: 2 38.75
13: 7 33.50
14: 8 27.50
15: 30 11.75
16: 1 11.50
17: 8 11.75
18: 40 19.75
19: 8 14.25
For all but the first 3 rows, the third column is the average of the
values in the 2nd column
question but I just can't figure it out.
How about interpolating the table name into the string:
c.execute("update %s set col1 = %%s, col2 = %%s, col3=%%s" % (sometable), \
['the', 'cat', 'in the hat'])
Note the need to double the %'s for the parameters to be bound.
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t these days.
>
>I'm on my second major mail system deployment built around Exim, and
>would recommend it to anybody needing a robust, flexible mail server.
There is an exim 4 book out, but not via O'Reilly - I gather sales
were insufficient to persuade O'Rei
hich is ready to be used on the Internet for any but very limited
applications.
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the mistaken belief that they actually
have done it correctly.
The number of software products which use eail and do so incorrectly
is astounding and depressing. There's a reason that the source for
sendmail is about 120K lines, exim is nearly 270K lines. Doing it
right is _hard_.
--
Ji
the same thing at the same time. Thanks in advance :)
options:
Have the child set it's exit code to indicate success or failure and
use one of the various os.wait functions in the parent to retrieve it.
or
create a pipe before forking and you can pass data back and forth
between the parent
mainFrame = Frame(root)
textBox = Text(mainFrame)
textBox.pack(fill=BOTH, expand=YES)
mainFrame.pack(fill=BOTH, expand=YES)
fh = os.popen('/bin/cat /tmp/pipe', 'r', 1)
def readfh(filehandle, stateMask):
global textBox
newText = filehandle.readline()
textBox.insert(END, newText)
tkinter.createfilehandler(fh, tkinter.READABLE, readfh)
root.mainloop()
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g, z_price) )
I hate to ask, but what happens when I enter "a, b, c);DROP DATABASE;" as
the entry for z_name? (Or some similar attempt to close the
SQL statement and start a new one). I think you want to google for "SQL
injection" and think about sanitising user input a bit.
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keep a reference to f:
import fcntl
def lock():
f=open('/tmp/lockfile')
fcntl.flock(f,fcntl.LOCK_EX)
return f
saveme = lock()
print "OK"
while True:
pass
Under FreeBSD, the first copy prints OK and waits for a SIGINT, the
second copy prints nothing. Killing the first copy prints OK on the
second one
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f = RIDGE)
otherlabel.pack(side = TOP, fill = BOTH, expand = YES)
root.mainloop()
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ther_stuff_here()
else:
print "This is impossible, but it happened"
b = Checkbutton(root, text = 'Press Me', command = check, variable = v)
b.grid(row = 0, column = 0)
root.mainloop()
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ed is how long it takes to transfer the
data to the underlying OS socket buffers. The first transfer fills the
buffers, subsequent ones have to wait until the data has been put on
the wire and acknowledged before there's space for the writes.
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ocation, fill it in
board[loc] = ['X', 'O'][player]
for i in range(3):
# check for horizontal win
if board[3 * i] == board[ 3 * i + 1] == board[3 * i + 2] and \
board[3 * i] != ' ':
win =
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