Re: [Tutor] Random module help

Thank you, this is great. Alan Gauld wrote: > "Norman Khine" <[EMAIL PROTECTED]> wrote > > >> q_keys.sort() >> a = [q[x] for x in q_keys] > > a = [random.choice(q[x]) for x in q_keys] > >> So from this how do I choose a random element and produce a new >> dictionary like for example: > > Se

Re: [Tutor] a code question, but don't know question's name

"Happy Deer" <[EMAIL PROTECTED]> wrote > def getdata(varlist): > > > eventually I have a variable called "data", which have exactly the > same > number of columns as the name of variables in varlist. > Say varlist=['var1','var2','var3']. I want to assign > var1=data[:,0], > var2=data[:,1]

Re: [Tutor] Top Programming Languages of 2013

"Dick Moores" <[EMAIL PROTECTED]> wrote > > Interesting, but I'm not sure what the criteria for "top" is. Is it a measure of power, popularity, usage? Scary that HTML/CSS should be so high though given its not a programming language at all! Ala

Re: [Tutor] Top Programming Languages of 2013

Alan Gauld wrote: > "Dick Moores" <[EMAIL PROTECTED]> wrote > >> >> > > Interesting, but I'm not sure what the criteria for "top" is. > Is it a measure of power, popularity, usage? > > Scary that HTML/CSS should be so high though > given its not a

[Tutor] Top Programming Languages of 2013

On 07/10/2007, Ricardo Aráoz <[EMAIL PROTECTED]> wrote: > > Alan Gauld wrote: > > "Dick Moores" <[EMAIL PROTECTED]> wrote > > > >> > >> > > > > Interesting, but I'm not sure what the criteria for "top" is. > > Is it a measure of power, popularity, usa

Re: [Tutor] Top Programming Languages of 2013

What are these stats based on? On 10/7/07, Alan Gauld <[EMAIL PROTECTED]> wrote: > > > "Dick Moores" <[EMAIL PROTECTED]> wrote > > > > > > > Interesting, but I'm not sure what the criteria for "top" is. > Is it a measure of power, popularity, usage? >

Re: [Tutor] a code question, but don't know question's name

Alan Gauld wrote: > The notation data[;,0] doesn't make sense and is an error in Python. > I#m not sure what you think it does. I assume you simply mean > data[0]? [:,0] is an extended slice, not an error: http://docs.python.org/ref/slicings.html It is used in Numeric/numpy to select from multidi

Re: [Tutor] a code question, but don't know question's name

Happy Deer wrote: > Dear all- > > I am writing a function as follows. > > def getdata(varlist): > > > eventually I have a variable called "data", which have exactly the same > number of columns as the name of variables in varlist. > Say varlist=['var1','var2','var3']. I want to assign var

Re: [Tutor] largest and smallest numbers

Christopher Spears wrote: > One of the exercises from Core Python Programmng (2nd > Edition) asks me to determine the largest and smallest > integers, float, and complex numbers my system can > handle. Using python.org and Google, I have > discovered my system's largest and smallest ingtegers: >

Re: [Tutor] a code question, but don't know question's name

"Kent Johnson" <[EMAIL PROTECTED]> wrote >> The notation data[;,0] doesn't make sense and is an error in >> Python. > > [:,0] is an extended slice, not an error: > http://docs.python.org/ref/slicings.html > Really? I got an error from the interpreter. >>> d[:,0] Traceback (most recent call last

Re: [Tutor] a code question, but don't know question's name

Alan Gauld wrote: > "Kent Johnson" <[EMAIL PROTECTED]> wrote > >>> The notation data[;,0] doesn't make sense and is an error in >>> Python. >> [:,0] is an extended slice, not an error: >> http://docs.python.org/ref/slicings.html >> > > Really? I got an error from the interpreter. > d[:,0]

Re: [Tutor] a code question, but don't know question's name

Kent Johnson wrote: > Alan Gauld wrote: >> "Kent Johnson" <[EMAIL PROTECTED]> wrote >> The notation data[;,0] doesn't make sense and is an error in Python. >>> [:,0] is an extended slice, not an error: >>> http://docs.python.org/ref/slicings.html We discussed this quite a bit last July:

[Tutor] File Writing Permission?

Hi everyone, I'm working on making a Debian package for a game I'm working on, and it works fine, but I've run into a problem with my script now. The script is placed in /usr/bin so all users on the system have access, but even though it will run fine, I can't save files to that directory, so the

[Tutor] Logging with proper format

Hello tutors, I am adding logging to a program I am writing. I have some messages I want to log that are rather long. The problem I am running into is that when the line is more than the 80 character line recommendation and I split it across 2 lines with "\", the output is affected. Example c

Re: [Tutor] a code question, but don't know question's name

Thank all for the discussion. Maybe I can separate my question into two. First, I have experience in Matlab, where I can use "eval". I wonder whether someone knows about it. Second, if I just want to return data[:,1], ...data[:,-1] separately without knowing ahead how many columns data has. What

[Tutor] Logging with proper format

Sent this almost an hour ago, did not get it from the list yet. No idea why, but sending again... -- Hello tutors, I am adding logging to a program I am writing. I have some messages I want to log that are rather long. The problem I am running into is that when the line

Re: [Tutor] File Writing Permission?

David Millar wrote: > Hi everyone, > > I'm working on making a Debian package for a game I'm working on, and > it works fine, but I've run into a problem with my script now. The > script is placed in /usr/bin so all users on the system have access, > but even though it will run fine, I can't sav

[Tutor] corresponding command in Python to "eval" in Matlab

Dear all- I wonder whether there is a way in Python which can do what "eval" in Matlab does. Say, varlist is a 1 by k tuple/list, which contains strings for variable names. For example, varlist=['var1','var2',...'vark'] data is a n by k matrix. I want to assign each column in data to each variabl

Re: [Tutor] a code question, but don't know question's name

Happy Deer wrote: > Thank all for the discussion. > Maybe I can separate my question into two. > > First, I have experience in Matlab, where I can use "eval". I wonder > whether someone knows about it. > > Second, if I just want to return data[:,1], ...data[:,-1] separately > without knowing ahea

Re: [Tutor] a code question, but don't know question's name

I am writing a function getdata for other people, and I want others can use the function as follows. var1,var2, var3=getdata(..., ['var1','var2','var3'],...) If I can not return data column by column, I can not get the above, right? On 10/7/07, Eric Brunson <[EMAIL PROTECTED]> wrote: > > Happy D

Re: [Tutor] File Writing Permission?

> if os.name == "posix": > fname = "~/" + fname > infile = open(fname,"w") you must expand '~' before open: fname = os.path.join('~',fname) fname = os.path.expanduser( fname ) infile = open(fname,'w') ___ Tut

Re: [Tutor] Logging with proper format

dont indent the line after '\', that means 0 indent s = 'hello\ boy' ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor

Re: [Tutor] a code question, but don't know question's name

Happy Deer wrote: > First, I have experience in Matlab, where I can use "eval". I wonder > whether someone knows about it. Python has an eval() function but it's use is discouraged, there is usually a better way. It would help if you would give us more context for your problem. > Second, if I

Re: [Tutor] a code question, but don't know question's name

Happy Deer wrote: > I am writing a function getdata for other people, and I want others > can use the function as follows. > > var1,var2, var3=getdata(..., ['var1','var2','var3'],...) > > If I can not return data column by column, I can not get the above, > right? Given: data = [ 1, 2, 3, 4, 5,

Re: [Tutor] corresponding command in Python to "eval" in Matlab

A good python coder would probably not choose to pollute his name space like that. My choice would be to assign the elements of "data" to a dictionary indexed by the strings in varlist like this: vardict = dict( zip( varlist, data ) ) and reference "var1" as: vardict['var1'] Happy Deer wrot

Re: [Tutor] Logging with proper format

claxo wrote: > dont indent the line after '\', that means 0 indent > > s = 'hello\ > boy' > Or, arguably better: s = '''hello boy''' > > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor >

Re: [Tutor] Logging with proper format

wormwood_3 wrote: > Hello tutors, > > I am adding logging to a program I am writing. I have some messages I want to > log that are rather long. The problem I am running into is that when the line > is more than the 80 character line recommendation and I split it across 2 > lines with "\", the o

Re: [Tutor] a code question, but don't know question's name

Happy Deer wrote: > I am writing a function getdata for other people, and I want others can > use the function as follows. > > var1,var2, var3=getdata(..., ['var1','var2','var3'],...) There is no need to pass the variable names to getdata. Have you read any Python tutorials? There are several g

Re: [Tutor] corresponding command in Python to "eval" in Matlab

However, I didn't actually answer your question. As Kent has already mentioned, eval is quite dangerous in python and to be avoided when possible. I think it would be safer to do something like this: l = locals() for x, y in zip( varlist, data ): l[x] = y or, more tersely: [ locals()[x]

Re: [Tutor] corresponding command in Python to "eval" in Matlab

Happy Deer wrote: > Dear all- > > I wonder whether there is a way in Python which can do what "eval" in > Matlab does. > Say, varlist is a 1 by k tuple/list, which contains strings for variable > names. > For example, varlist=['var1','var2',...'vark'] > data is a n by k matrix. > I want to assi

Re: [Tutor] Logging with proper format

Eric Brunson wrote: > claxo wrote: >> dont indent the line after '\', that means 0 indent >> >> s = 'hello\ >> boy' >> > > Or, arguably better: > > s = '''hello > boy''' That is a different string, it contains a newline, the original does not: In [20]: s = 'hello\ : boy' In [21]: s2

Re: [Tutor] corresponding command in Python to "eval" in Matlab

Eric Brunson wrote: > However, I didn't actually answer your question. > > As Kent has already mentioned, eval is quite dangerous in python and to > be avoided when possible. I think it would be safer to do something > like this: > > l = locals() > for x, y in zip( varlist, data ): > l[x]

Re: [Tutor] Logging with proper format

> logger.info("Checked %s records in %s seconds, yielding an average of > \ > %s seconds per record." % (len(self.data), duration, avgquery) ) ^ Remove these spaces. It makes the source code look weird, but the output will be correct. Alan _

Re: [Tutor] a code question, but don't know question's name

On Sunday 07 October 2007 21:29, Happy Deer wrote: > Thank all for the discussion. > Maybe I can separate my question into two. > > First, I have experience in Matlab, where I can use "eval". I > wonder whether someone knows about it. I suspect you are using Numpy, you should subscribe to the Nump

Re: [Tutor] Logging with proper format

On Sunday 07 October 2007 22:32, Kent Johnson wrote: > Eric Brunson wrote: > > claxo wrote: > >> dont indent the line after '\', that means 0 indent > >> > >> s = 'hello\ > >> boy' > > > > Or, arguably better: > > > > s = '''hello > > boy''' > And there is even a third way:-) >>> s = "hello " \ .

Re: [Tutor] a code question, but don't know question's name

I have written the exact same reply. Sorry for that! I should have read the other replies first. Eike. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor

[Tutor] Permission Report

Hello all, I have a tree of code on a machine which has been tweaked and fiddled with over several months, and which passes tests. I have the same codebase in a new virtual machine. A shell hack[0] shows me that the permissions are very different between the two. I could use rsync or something

Re: [Tutor] Permission Report

"Stephen Nelson-Smith" <[EMAIL PROTECTED]> wrote > I could use rsync or something to synchronise them, but I would like > to produce a report of the sort: > > Change file: foo from 755 to 775 > > I'm not sure how best to proceed - I guess walk through the > filesystem > gathering info using stat

[Tutor] Updating MySQL Database

Hello all, I have a script which takes data from a file or MySQL DB, looks up some stuff, then can print results to console or file. I would also like it to be able to update a MySQL database with the results. Does anyone have any ideas on how to do this? I can update records just fine, but wha

Re: [Tutor] Updating MySQL Database

wormwood_3 wrote: > Hello all, > > I have a script which takes data from a file or MySQL DB, looks up some > stuff, then can print results to console or file. I would also like it to be > able to update a MySQL database with the results. Does anyone have any ideas > on how to do this? I can upd

Re: [Tutor] Permission Report

Alan Gauld wrote: > There is a dircmp module that may do what you want but I've not > used it. It was deprecated in Python 2.0 and removed in 2.5. From a quick look it might provide a useful framework but it doesn't compare permissions. Kent ___ Tutor

Re: [Tutor] Updating MySQL Database

wormwood_3 wrote: > Hello all, > > I have a script which takes data from a file or MySQL DB, looks up some > stuff, then can print results to console or file. I would also like it to be > able to update a MySQL database with the results. Does anyone have any ideas > on how to do this? I can upd

Re: [Tutor] Updating MySQL Database

On Sun, Oct 07, 2007 at 06:07:45PM -0700, wormwood_3 wrote: > Hello all, > > I have a script which takes data from a file or MySQL DB, looks up > some stuff, then can print results to console or file. I would also > like it to be able to update a MySQL database with the results. Does > anyone have

Re: [Tutor] Updating MySQL Database

Hey Sam, wormwood_3 wrote: > Hello all, > > I have a script which takes data from a file or MySQL DB, looks up some > stuff, then can print results to console or file. I would also like it to be > able to update a MySQL database with the results. Does anyone have any ideas > on how to do this?

Re: [Tutor] File Writing Permission?

Thanks - it still took a bit more tweaking because of how I wrote a few things, but the saving works fine now. I've been having trouble with finding a version of the curses library for Windows that I can get working, so I just used os.path.expanduser no matter the system. :/ Dave On 10/7/07, clax

Re: [Tutor] Updating MySQL Database

Rick Pasotto wrote: > (ip,fqdn) = line.split(',') > updatequery = "update resultstable set %s where ip = %s" % (fqdn,ip) > cursor.execute(updatequery) > connection.close() > > Alternatively you could do: > > connection = MySQLdb.connect(db=self.todatabase,host-self.host, >