default argument values qns

hi i have declared a function like this: def aFunction ( arg1 , arg2 = 0): print type(arg2) when i try to print the type of arg2, it gives me 'str' type..why is it not integer type, since i have declared it as 0 ?? thanks -- http://mail.python.org/mailman/listinfo/python-

check for dictionary keys

hi in my code, i use dict(a) to make to "a" into a dictionary , "a" comes from user input, so my program does not know in the first place. Then say , it becomes a = { '-A' : 'value1' , '-B' : "value2" , "-C" : "value3" , '-D' : 'value4' } somewhere next in my code, i will check for these..: 1)

printing backslash

hi i want to print something like this |\| first i tried it as string a = "|\|" it prints ok but when i put it to a list a = ["|\|"] it gives me '|\\|' .there are 2 back slashes...i only want one.. how can i properly escape it? I have tried [r"|\|"] , [r'\\'] but they do not work... thanks

printing backslash

hi how can i sucessfully print |\| in the output of a print command a = "|\|" print a but it gives me "|\\|" i tried raw strings too, but it doesn't print |\| . It prints |\\| instead eventually, i also want |\| to be inside a list: alist = ["|\|", 'blah', 'blah'] . How can i put |\| inside a

Re: printing backslash

Tim Chase wrote: > > i want to print something like this > > > > |\| > > > > first i tried it as string > > > > a = "|\|" > > > > it prints ok > > > > but when i put it to a list > > > > a = ["|\|"] > > > > it gives me '|\\|' .there are 2 back slashes...i only want one.. how > > can i properly es

regexp questoin

hi i created a script to ask user for an input that can be a pattern right now, i use re to compile that pattern pat = re.compile(r"%s" %(userinput) ) #userinput is passed from command line argument if the user key in a pattern , eg [-] , and my script will search some lines that contains [-] p

Re: regexp questoin

Fredrik Lundh wrote: > [EMAIL PROTECTED] wrote: > > > pat = re.compile(r"%s" %(userinput) ) #userinput is passed from > > command line argument > > that r"%s" % (userinput) thing is a pointless operation: the "r" prefix > controls how backslashes in a string literal is parsed; the result is an

a string problem

hi if i have a some lines like this a ) "here is first string" b ) "here is string2" c ) "here is string3" When i specify i only want to print the lines that contains "string" ie the first line and not the others. If i use re module, how to compile the expression to do this? I tried the re modul

Re: a string problem

John Salerno wrote: > [EMAIL PROTECTED] wrote: > > hi > > > > if i have a some lines like this > > a ) "here is first string" > > b ) "here is string2" > > c ) "here is string3" > > > > When i specify i only want to print the lines that contains "string" ie > > the first line and not the others.

Re: a string problem

John Salerno wrote: > [EMAIL PROTECTED] wrote: > > hi > > > > if i have a some lines like this > > a ) "here is first string" > > b ) "here is string2" > > c ) "here is string3" > > > > When i specify i only want to print the lines that contains "string" ie > > the first line and not the others.

Re: a string problem

John Salerno wrote: > [EMAIL PROTECTED] wrote: > > hi > > > > if i have a some lines like this > > a ) "here is first string" > > b ) "here is string2" > > c ) "here is string3" > > > > When i specify i only want to print the lines that contains "string" ie > > the first line and not the others.

Re: a string problem

John Salerno wrote: > [EMAIL PROTECTED] wrote: > > > just curious , if RE has the \b and it works, can we look into the > > source of re and see how its done for \b ? > > I had a look in the sre module (which re seems to import), but I > couldn't find much. I'm not the best at analyzing source cod

proper way to use popen4

hi i have to execute some SQL statements against a database using a SQL client i want to use the os.popen4 module can someone correct the way i use os.popen4? thanks fin = "select * from some_table" #sql statement client = "osql server user password" #sql client syntax fin, fout = os.popen4(client

mapping None values to ''

hi i wish to map None or "None" values to "". eg a = None b = None c = "None" map( , [i for i in [a,b,c] if i in ("None",None) ]) I can't seem to find a way to put all values to "". Can anyone help? thanks -- http://mail.python.org/mailman/listinfo/python-list

MSoffice metadata

hi is there a module in Python to extract metadata in MS office documents thanks -- http://mail.python.org/mailman/listinfo/python-list

automatic debugger?

hi is there something like an automatic debugger module available in python? Say if i enable this auto debugger, it is able to run thru the whole python program, print variable values at each point, or print calls to functions..etc...just like the pdb module, but now it's automatic. thanks -- htt

a class variable question

hi i have define a class like this class A: _var1 = 0 def __init__(self): ## some initialization self.func1() def func1(): . _var1 = 1 def getvarValue(self):

python pyc or pyo files

hi any good websites or articles that describes about pyc or pyo files , how they are generated and what's the difference between them and Java's bytecode?? thanks -- http://mail.python.org/mailman/listinfo/python-list

Re: python pyc or pyo files

thanks ! can i ask again... I have two scripts , A.py and B.py In B.py, i have an import statement to import A.py When i executed B.py, i saw a A.pyc in the same directory, but not B.pyc This is an expected behaviour right? why is B.pyc not generated? thanks -- http://mail.python.org/mailm

Re: python pyc or pyo files

thanks! got it -- http://mail.python.org/mailman/listinfo/python-list

a subprocess qns

hi i wanted to start execute a command and put it in the background. i am using Unix. Usually i start this command using something like this : "/path/somecmd &" with the "&" to put it to background. i looked at the subprocess module docs and came across this statement Replacing os.spawn* -

can anyone advise me

why the output of this code : x = 0 while x < 10: z = 0 print x x = x + 1 while z < x: print z, z = z + 1 is 0 0 1 0 1 2 0 1 2 3 0 1 2 3 4 0 1 2 3 4 5 0 1 2 3 4 5 6 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6

Re: can anyone advise me

Dan Sommers wrote: > On 27 Apr 2006 02:48:46 -0700, > [EMAIL PROTECTED] wrote: > > > why the output of this code : > > x = 0 > > while x < 10: > > z = 0 > > print x > > x = x + 1 > > while z < x: > > print z, > > z = z + 1 > > > is >

stripping

hi i have a file test.dat eg abcdefgh ijklmn <-newline opqrs tuvwxyz <---newline I wish to print the contents of the file such that it appears: abcdefgh ijklmn opqrs tuvwxyz here is what i did: f = open("test.dat") while 1: line = f.readline().rstrip("\n")

stripping blanks

hi i have a file test.dat eg abcdefgh ijklmn <-newline opqrs tuvwxyz <---newline I wish to print the contents of the file such that it appears: abcdefgh ijklmn opqrs tuvwxyz here is what i did: f = open("test.dat") while 1: line = f.readline().rstrip("\n")

strip newlines and blanks

hi i have a file test.dat eg abcdefgh ijklmn <-newline opqrs tuvwxyz I wish to print the contents of the file such that it appears: abcdefgh ijklmn opqrs tuvwxyz here is what i did: f = open("test.dat") while 1: line = f.readline().rstrip("\n") if line == '':

blank lines representation in python

hi what is the correct way to represent blank lines in python (while iterating a file) without regexp? I know one way is to use re.search((line,r'^$') to grab a blank line, but i wanna try not to use regexp... is it 1) if line == ''": dosomething() (this also means EOF right? ) 2) if line is None:

Re: strip newlines and blanks

thanks..and sorry, i am using the web version of google groups and didn't find an option i can edit my post, so i just removed it.. thanks again for the reply.. -- http://mail.python.org/mailman/listinfo/python-list

pythonic way to sort

hi I have a file with columns delimited by '~' like this: 1SOME STRING ~ABC~12311232432D~20060401~ 2SOME STRING ~DEF~13534534543C~20060401~ 3SOME STRING ~ACD~14353453554G~20060401~ . What is the pythonic way to sort this type of structured text file? Sa

printing out elements in list

hi i have a list with contents like this alist = ['>QWER' , 'askfhs', '>REWR' ,'sfsdf' , '>FGDG', 'sdfsdgffdgfdg' ] how can i "convert" this list into a dictionary such that dictionary = { '>QWER':'askfhs' , '>REWR' : 'sfsdf' , '>FGDG', 'sdfsdgffdgfdg' } thanks -- http://mail.python.org/mailm

Re: printing out elements in list

thanks for all your replies...I will go test them out.. I was wondering what does this mean alist[1::2]? thanks -- http://mail.python.org/mailman/listinfo/python-list

Re: printing out elements in list

thanks for the detailed explaination... i know about basic lists slicing..just havn't seen one with "steps" yet.. thanks again...clp rocks. -- http://mail.python.org/mailman/listinfo/python-list

find all index positions

hi say i have string like this astring = 'abcd efgd 1234 fsdf gfds abcde 1234' if i want to find which postion is 1234, how can i achieve this...? i want to use index() but it only give me the first occurence. I want to know the positions of both "1234" thanks -- http://mail.python.org/mailman/li

deleting texts between patterns

hi say i have a text file line1 line2 line3 line4 line5 line6 abc line8 <---to be delete line9 <---to be delete line10 <---to be delete line11 <---to be delete line12 <---to be delete line13 <---to be delete xyz line15 line16 line17 line18 I wish to delete lines that are in between 'abc' and

nested functions

hi just curious , if i have a code like this? def a(): def b(): print "b" def c(): print "c" how can i call c() ?? -- http://mail.python.org/mailman/listinfo/python-list

any update to this?

hi i was looking at this : http://www.python.org/doc/essays/comparisons.html on comparisons of python and other languages? are there any updates to this doc? or is there other reliable source for such comparison elsewhere? thanks -- http://mail.python.org/mailman/listinfo/python-list