[Tutor] Fwd: Simple copy script
This is what I came up with after writing it out and reading the
corresponding functions. I feel I'm close but something is still awry.
#file copy based on input file containing filenames to be copied
##
import os
import shutil
os.chdir('c:\\test')
infile = open(input.txt,r)
for line in infile:
shutil.copy(line, 'outfolder')
#print line 'copied'
infile.close()
#
-- Forwarded message --
From: Alan Gauld [EMAIL PROTECTED]
Date: Sat, Apr 12, 2008 at 5:15 AM
Subject: Re: [Tutor] Simple copy script
To: tutor@python.org
Que Prime [EMAIL PROTECTED] wrote
I'm trying to copy files from one directory to another based on an
input txt
file containing the filename.
Source directory = C:\test
Destination directory = C:\output
input.txt looks like:
12345.pdf
12344.pdf
Try writing what you want to do in structured English first
Open the file input.txt
For each line in input.txt :
copy the named file from source to destination
Close the file input.txt
Now can you write that ion Python? (You may want to check
the shutil module for copying the files)
If you can';t get it to work send us your code and any error
messages you get.
You will find more detailed info in the Using the OS
topic of my tutor.
--
Alan Gauld
Author of the Learn to Program web site
http://www.freenetpages.co.uk/hp/alan.gauld
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Re: [Tutor] Fwd: Simple copy script
line.strip()
for line in file: = line will contain '\n' at the end of the string.
Andreas
Am Montag, den 14.04.2008, 00:08 -0700 schrieb Que Prime:
This is what I came up with after writing it out and reading the
corresponding functions. I feel I'm close but something is still
awry.
#file copy based on input file containing filenames to be copied
##
import os
import shutil
os.chdir('c:\\test')
infile = open(input.txt,r)
for line in infile:
shutil.copy(line, 'outfolder')
#print line 'copied'
infile.close()
#
-- Forwarded message --
From: Alan Gauld [EMAIL PROTECTED]
Date: Sat, Apr 12, 2008 at 5:15 AM
Subject: Re: [Tutor] Simple copy script
To: tutor@python.org
Que Prime [EMAIL PROTECTED] wrote
I'm trying to copy files from one directory to another based on an
input txt
file containing the filename.
Source directory = C:\test
Destination directory = C:\output
input.txt looks like:
12345.pdf
12344.pdf
Try writing what you want to do in structured English first
Open the file input.txt
For each line in input.txt :
copy the named file from source to destination
Close the file input.txt
Now can you write that ion Python? (You may want to check
the shutil module for copying the files)
If you can';t get it to work send us your code and any error
messages you get.
You will find more detailed info in the Using the OS
topic of my tutor.
--
Alan Gauld
Author of the Learn to Program web site
http://www.freenetpages.co.uk/hp/alan.gauld
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Re: [Tutor] Simple copy script
Que Prime [EMAIL PROTECTED] wrote
This is what I came up with after writing it out and reading the
corresponding functions. I feel I'm close but something is still
awry.
You need to give us more information.
What is still awry? Do you get any errors or is it not
copyng all files? Or any of them?
Here are some possibilities:
Do all the files you are copying exist? - Are you 100% sure?
Does the 'outfile' folder exist? Does it exist inside C:\test?
To try and fix things:
Add some print lines to print:
1) The current folder( use os.getcwd() )
2) Each filename
3) A directory listing of outfile after copying the files
Finally a couple of comments:
#file copy based on input file containing filenames to be copied
##
import os
import shutil
os.chdir('c:\\test')
infile = open(input.txt,r)
for line in infile:
You can miss out the open() line by putting it into the for loop:
for line in open('input.txt','r'):
shutil.copy(line, 'outfolder')
You may want to strip() the line first just in case any extra
whitespace has been added in the file
#print line 'copied'
infile.close()
HTH
--
Alan Gauld
Author of the Learn to Program web site
http://www.freenetpages.co.uk/hp/alan.gauld
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[Tutor] encode unicode strings from pysqlite
Here is a program that SELECT's from a pysqlite database table and encode's the
returned unicode strings:
import sys
import os
import sqlite3
con = sqlite3.connect(testDB.db)
cur = con.cursor()
a = u'99 Cycling Swords'
b = a.encode('utf-8')
print b
q = '%wor%'
limit = 25
query = SELECT fieldB FROM testDB WHERE fieldB LIKE '%s' LIMIT '%s' %(q,
limit)
for row in cur.execute(query):
r = str(row)
print r.encode('utf-8')
The print b results in: 99 Cycling Swords ... which is what I want.
But, the print r.encode('utf-8') leaves the strings as unicode strings eg. u'99
Cycling Swords'
Any ideas what might be going on?
Dinesh
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Re: [Tutor] encode unicode strings from pysqlite
Dinesh B Vadhia wrote:
Here is a program that SELECT's from a pysqlite database table and
encode's the returned unicode strings:
query = SELECT fieldB FROM testDB WHERE fieldB LIKE '%s' LIMIT '%s'
%(q, limit)
for row in cur.execute(query):
Here row is a list containing a single unicode string. When you convert
a list to a string, it converts the list elements to strings using the
repr() function. The repr() of a unicode string includes the u'' as part
of the result.
In [64]: row = [u'99 Cycling Swords']
In [65]: str(row)
Out[65]: [u'99 Cycling Swords']
Notice that the above is a string that includes u' as part of the string.
What you need to do is pick out the actual data and encode just that to
a string.
In [62]: row[0].encode('utf-8')
Out[62]: '99 Cycling Swords'
Kent
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Re: [Tutor] encode unicode strings from pysqlite
Hi! Kent. The row[0].encode('utf-8') works perfectly within a standalone
program. But didn't work within webpy until I realized that maybe webpy is
storing the row as a dictionary (which it does) and that you have to get the
string by the key (ie. 'fieldB'). That worked and also webpy encodes the
unicode string at the same time. Here are the details:
# standard Python: testDB.py
con = sqlite3.connect(testDB.db)
cur = con.cursor()
query = SELECT fieldB FROM testDB
WHERE fieldB LIKE '%s'
LIMIT '%s' %(q, limit)
for row in cur.execute(query):# row is a list
print row[0].encode('utf-8')# works perfectly!
# webpy: testDB2.py
web.config.db_parameters = dict(dbn='sqlite', db=testDB.db)
for row in web.select('testDB',
what='fieldB',
where='fieldB LIKE $q',
limit=limit,
vars={'q':q}):
r = row['fieldB']# get encode'd unicode through
dict key value
print r # works perfectly!
- Original Message -
From: Kent Johnson
To: Dinesh B Vadhia
Cc: tutor@python.org
Sent: Monday, April 14, 2008 3:42 AM
Subject: Re: [Tutor] encode unicode strings from pysqlite
Dinesh B Vadhia wrote:
Here is a program that SELECT's from a pysqlite database table and
encode's the returned unicode strings:
query = SELECT fieldB FROM testDB WHERE fieldB LIKE '%s' LIMIT '%s'
%(q, limit)
for row in cur.execute(query):
Here row is a list containing a single unicode string. When you convert
a list to a string, it converts the list elements to strings using the
repr() function. The repr() of a unicode string includes the u'' as part
of the result.
In [64]: row = [u'99 Cycling Swords']
In [65]: str(row)
Out[65]: [u'99 Cycling Swords']
Notice that the above is a string that includes u' as part of the string.
What you need to do is pick out the actual data and encode just that to
a string.
In [62]: row[0].encode('utf-8')
Out[62]: '99 Cycling Swords'
Kent
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[Tutor] Font capture from webpages
Hi , I want to find the font style,Font size written in webpage without looking into source code. Can Any one tell if there is API avalable for this in python . Thanks in Advance. Ashish Sharma ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Font capture from webpages
beautiful soup would do it. It's still looking into the source, though. On Mon, Apr 14, 2008 at 7:02 AM, Ashish Sharma [EMAIL PROTECTED] wrote: Hi , I want to find the font style,Font size written in webpage without looking into source code. Can Any one tell if there is API avalable for this in python . Thanks in Advance. Ashish Sharma ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor -- To be considered stupid and to be told so is more painful than being called gluttonous, mendacious, violent, lascivious, lazy, cowardly: every weakness, every vice, has found its defenders, its rhetoric, its ennoblement and exaltation, but stupidity hasn't. - Primo Levi ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Font capture from webpages
Ashish Sharma wrote: Hi , I want to find the font style,Font size written in webpage without looking into source code. Do you mean you don't want to look at the HTML/CSS for the page? If not, I guess you will have to somehow query the browser. Tools for that will be specific to the browser/OS you are using. Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Python Programming Tools
A (mainly Java) programmer on a LUG mailing list asks: What is a good IDE [for Python] that has Python tools for: library management, code completion, debugging, documentation, help Since I'm not familiar with Java at all, I'm not sure how many of the things he is asking for, are even relevant for Python? I'm presuming he is working with a team, and is developing complex programs. What do _you use? -- b h a a l u u at g m a i l dot c o m Kid on Bus: What are you gonna do today, Napoleon? Napoleon Dynamite: Whatever I feel like I wanna do. Gosh! ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Tutor Digest, Vol 50, Issue 43
Message: 1
Date: Mon, 14 Apr 2008 01:31:41 -0700
From: Dinesh B Vadhia [EMAIL PROTECTED]
Subject: [Tutor] encode unicode strings from pysqlite
To: tutor@python.org
Message-ID: [EMAIL PROTECTED]
Content-Type: text/plain; charset=iso-8859-1
Here is a program that SELECT's from a pysqlite database table and encode's
the returned unicode strings:
import sys
import os
import sqlite3
con = sqlite3.connect(testDB.db)
cur = con.cursor()
a = u'99 Cycling Swords'
b = a.encode('utf-8')
print b
q = '%wor%'
limit = 25
query = SELECT fieldB FROM testDB WHERE fieldB LIKE '%s' LIMIT '%s' %(q,
limit)
for row in cur.execute(query):
r = str(row)
print r.encode('utf-8')
Why not change this to:
for row in cur.execute(query):
for item in row:
print item.encode('utf-8')
which will return a string ?
Kinuthia.
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Re: [Tutor] Python Programming Tools
bhaaluu wrote: A (mainly Java) programmer on a LUG mailing list asks: What is a good IDE [for Python] that has Python tools for: library management, code completion, debugging, documentation, help Since I'm not familiar with Java at all, I'm not sure how many of the things he is asking for, are even relevant for Python? I'm presuming he is working with a team, and is developing complex programs. What do _you use? Personally, I use Emacs for more or less everything. As far as a more complete IDE solution goes, PyDev for the Eclipse platform is pretty popular. If you're willing to spend some $$$, then PyDev Extensions (also for Eclipse) are good, or ActiveState's Komodo IDE. They seem to be the gold standard. -Jordan Greenberg ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] input and output files from terminal
I have a python program which works fine when run using idle but I would like call the program from the terminal. python test.py -i inputfile -o outputfile I tried with raw_input but that only works in idle. Can this be achieved? Thanks ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] input and output files from terminal
look at the OptParse module, with this u can easily realize such things. http://docs.python.org/lib/module-optparse.html On Mon, Apr 14, 2008 at 12:55:07PM -0400, Brain Stormer wrote: I have a python program which works fine when run using idle but I would like call the program from the terminal. python test.py -i inputfile -o outputfile I tried with raw_input but that only works in idle. Can this be achieved? Thanks ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] input and output files from terminal
i think you need to try : cat input.txt | /usr/bin/python test.py output.txt ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Font capture from webpages
I want to find the font style,Font size written in webpage without looking into source code. your best bet would be your eyes. otherwise python will need to parse the source code to tell. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] input and output files from terminal
On Mon, Apr 14, 2008 at 12:55 PM, Brain Stormer [EMAIL PROTECTED] wrote: I have a python program which works fine when run using idle but I would like call the program from the terminal. python test.py -i inputfile -o outputfile I tried with raw_input but that only works in idle. Can this be achieved? Thanks ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor Please see: http://www.faqs.org/docs/diveintopython/kgp_commandline.html From the book: Dive into Python. Source code examples from the book: http://diveintopython.org/download/diveintopython-examples-4.1.zip Happy Programming! -- b h a a l u u at g m a i l dot c o m Kid on Bus: What are you gonna do today, Napoleon? Napoleon Dynamite: Whatever I feel like I wanna do. Gosh! ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Pythonic way to extract delimited substrings
Suggestions on the best way to extract delimited substrings strings from
a larger string?
Background: I have a long multi-line string with expressions delimited
with '(' and ')' markers. I would like to extract these substrings and
process them in a loop.
Because the left and right delimiters are different from each other
*and* multi-char strings, it would appear that the .split() method would
not be an appropriate tool for this work.
I know how to do this task with regular expressions, but I'm always
cautious about using a bazooka when a hammer will suffice.
What strategy would you recommend?
1. Write a simple parsing function using string primitives (find,
slicing)
2. Use regular expressions
3. Use a 3rd party string processing module
Thanks!
Malcolm
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[Tutor] Remove specific chars from a string
What is the Pythonic way to remove specific chars from a string? The .translate( table[, deletechars]) method seems the most 'politically correct' and also the most complicated. My ideas: 1. For each char to be removed, do a .replace( char_to_delete, '' ) 2. Do a .split( str_of_chars_to_delete ) followed by a ''.join() 3. Use a regular expression 4. Other? Thanks! Malcolm ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] input and output files from terminal
I used the optparse module since that is exactly what I wanted. Here is my code: import sys from optparse import OptionParser import os parser = OptionParser() parser.add_option(-i, --input, dest=infile, help=input FILE to convert, metavar=FILE) parser.add_option(-o, --output, dest=outfile, help=output FILE to convert to, metavar=FILE) (options, args) = parser.parse_args() if not os.path.isfile(options.infile): print Input files does not exit...Quitting sys.exit() elif os.path.isfile(options.outfile): print Output file exists, Remove it first sys.exit() Thanks everyone. On Mon, Apr 14, 2008 at 1:14 PM, [EMAIL PROTECTED] wrote: look at the OptParse module, with this u can easily realize such things. http://docs.python.org/lib/module-optparse.html On Mon, Apr 14, 2008 at 12:55:07PM -0400, Brain Stormer wrote: I have a python program which works fine when run using idle but I would like call the program from the terminal. python test.py -i inputfile -o outputfile I tried with raw_input but that only works in idle. Can this be achieved? Thanks ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Python Programming Tools
Jordan Greenberg [EMAIL PROTECTED] wrote What is a good IDE [for Python] that has Python tools for: library management, code completion, debugging, documentation, help Depending on what he wants in the way of Library Management then Pythonwin will give him all of that for free on Windows. Since I'm not familiar with Java at all, I'm not sure how many of the things he is asking for, are even relevant for Python? They are all relevant but might have a slightly different meaning... complete IDE solution goes, PyDev for the Eclipse platform is pretty popular. If you're willing to spend some $$$, then PyDev Extensions (also for Eclipse) are good, or ActiveState's Komodo IDE. They seem to be the gold standard. I'd second that particularly since a Java programmer has about a 50% chance of already using Eclipse so its an easy continuation of what he already knows. Platform independant but very resource hungry. But if he uses it already thats not a problem. Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Font capture from webpages
Ashish Sharma [EMAIL PROTECTED] wrote I want to find the font style,Font size written in webpage without looking into source code. Do you mean you need to find the actual font used in the browser regardless of the settings in the HTML/CSS source? On Windows you can probably do that by querying the OLE/DDE interface but it will be messy. On browsers like Lynx or Links it will be determined by the users resource file settings. It seems like a very strange thing to want to do. HTML and CSS allow a lot of scope for the browser to interpret things like fonmts locally. For example if a page specifies Helvetica it could wind up being displayed on one browser as Helvetica and on another (on the same computer!) as Arial or even Courier... Can Any one tell if there is API avalable for this in python . Not in Python as such. You have a choice of ways of parsing the HTML but querying the browser will need to go via things like COM or DDE I suspect. (And I have no idea what you'd do on Linux or MacOS!) -- Alan Gauld Author of the Learn to Program web site http://www.freenetpages.co.uk/hp/alan.gauld ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] input and output files from terminal
Brain Stormer [EMAIL PROTECTED] wrote
I have a python program which works fine when run using idle but I
would
like call the program from the terminal.
python test.py -i inputfile -o outputfile
Easier to use file redirection:
python test.py inputfile outputfile
The -i flag in particular might conflict with Pythons own -i option.
I tried with raw_input but that only works in idle.
What makes you think that?
raw_input is the normal way to get input from stdin.
Can you explain what you did and what the result was?
Perhaps with a short code example?
Try this for example:
name = raw_input('What's your name? ')
print hello, name
That can be run in IDLE or in a command window
or using file redirection as described above.
Tell us how you get on...
--
Alan Gauld
Author of the Learn to Program web site
http://www.freenetpages.co.uk/hp/alan.gauld
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Re: [Tutor] Pythonic way to extract delimited substrings
Malcolm Greene wrote:
Suggestions on the best way to extract delimited substrings strings from
a larger string?
Background: I have a long multi-line string with expressions delimited
with '(' and ')' markers. I would like to extract these substrings and
process them in a loop.
What strategy would you recommend?
If you just want to get the text between ( and ), re.findall() or
re.finditer() is probably the simplest way to do it. If it is more
complicated than that (e.g. nesting, escape chars) then I would probably
look at pyparsing.
Kent
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Re: [Tutor] Remove specific chars from a string
Malcolm Greene wrote: What is the Pythonic way to remove specific chars from a string? The .translate( table[, deletechars]) method seems the most 'politically correct' and also the most complicated. Most 'correct' and also by far the fastest. This recipe makes it a bit easier to use: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/303342 Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Pythonic way to extract delimited substrings
Malcolm Greene [EMAIL PROTECTED] wrote in
Background: I have a long multi-line string with expressions
delimited
with '(' and ')' markers. I would like to extract these substrings
and
process them in a loop.
I know how to do this task with regular expressions, but I'm always
cautious about using a bazooka when a hammer will suffice.
Sounds like an ideal candidate for regex and findall to me.
If you have to stop a tank a bazooka may be the right tool...
Alan G.
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Re: [Tutor] Remove specific chars from a string
Malcolm Greene [EMAIL PROTECTED] wrote What is the Pythonic way to remove specific chars from a string? The .translate( table[, deletechars]) method seems the most 'politically correct' and also the most complicated. Assuming you have lots of different characters and not just one to remove, then: either translate() or 3. Use a regular expression HTH, Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Remove specific chars from a string
At 12:04 PM 4/14/2008, Kent Johnson wrote: Malcolm Greene wrote: What is the Pythonic way to remove specific chars from a string? The .translate( table[, deletechars]) method seems the most 'politically correct' and also the most complicated. Most 'correct' and also by far the fastest. This recipe makes it a bit easier to use: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/303342 Just a couple of days ago I needed a function to determine the number of significant digits in a real number. It also involves the removal of specific chars from a string, but not all at once. (It ignores the implicit assumption that the digits at the end of the remaining string are actually significant.) This is what I came up with. It works, but could it be improved? def sigDigits(n): Strips any real decimal (as string) to just its significant digits, then returns its length, the number of significant digits. Examples: -345 - 345 - 3; 3.000 - 3000 - 4 0.0001234 - 1234 - 4; 10.0001234 - 11234 - 9 7.2345e+543 - 72345 - 5 s = str(n).lstrip(-+0) s = s.lstrip(.) s = s.lstrip(0) s = s.lstrip(.) s = s.replace(., ) if e in s: s = s.rstrip(+-0123456789) s = s.rstrip(e) return len(s) Thanks, Dick Moores UliPad The Python Editor: http://code.google.com/p/ulipad/ ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Remove specific chars from a string
Dick Moores wrote:
def sigDigits(n):
Strips any real decimal (as string) to just its significant digits,
then returns its length, the number of significant digits.
Examples: -345 - 345 - 3;
3.000 - 3000 - 4
0.0001234 - 1234 - 4;
10.0001234 - 11234 - 9
7.2345e+543 - 72345 - 5
s = str(n).lstrip(-+0)
s = s.lstrip(.)
s = s.lstrip(0)
s = s.lstrip(.)
Why the repeated strips? Couldn't this all just be done with
lstrip('-+0.') ?
How many significant digits are in 123000?
Kent
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[Tutor] Best practice: Use % operator or locale.format?
Does the % operator always respect locale or should one use locale.format() instead? Are there guidelines where one should use one string formatting technique vs. another? Thanks! Malcolm ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Remove specific chars from a string
At 01:39 PM 4/14/2008, Kent Johnson wrote:
Dick Moores wrote:
def sigDigits(n):
Strips any real decimal (as string) to just its
significant digits,
then returns its length, the number of significant
digits.
Examples: -345 - 345 -
3;
3.000 - 3000 - 4
0.0001234 - 1234 -
4;
10.0001234 - 11234
- 9
7.2345e+543 - 72345 -
5
s = str(n).lstrip(-+0)
s = s.lstrip(.)
s = s.lstrip(0)
s = s.lstrip(.)
Why the repeated strips? Couldn't this all just be done with
lstrip('-+0.') ?
Yes. Thanks, Kent.
def sigDigits(n):
Strips any real decimal (as string) to just its
significant digits,
then returns its length, the number of significant
digits.
Examples: -345 - 345 -
3;
3.000 - 3000 - 4
0.0001234 - 1234 -
4;
10.0001234 - 11234
- 9
7.2345e+543 - 72345 -
5
s = n.lstrip('-+0.')
s = s.replace(., )
if e in s:
s =
s.rstrip(+-0123456789)
s =
s.rstrip(e)
return len(s)
How many significant digits
are in 123000?
Function returns 6, but could be 3, 4, 5, or 6. That's OK for my
purposes. Got a suggestion for these cases?
Dick
UliPad The Python Editor:
http://code.google.com/p/ulipad/
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[Tutor] setting program configuration for all files and modules of a program
Hello,
I am building a simple GUI for a calculation program. I am using config
files (*.cfg) and reading them in with ConfigParser. This works well
because I have nearly all code in 1 text file.
But I would like to modularize my code and separate the GUI code from
the functional code that provides the calculation operations. This will
help to expand the functionality at a later stage. I want to achieve
this through splitting the code into different modules.
The problem is now that I would always have to write the configration
file specific code in each module that uses the configration settings
(see code below).
How can I provide the settings stored in the configuration file
throughout my program to all functions without needing to initiate the
ConfigParser object in each module?
I through of having a special module settings.py which I could use to
read in the configuration from the file and then import this in each module.
Is there a more decent and elegant way?
What is the state of the art in storing and parsing configuraions in
python programs?
Kind regards,
Timmie
# CODE #
import sys
import locale
import ConfigParser
import gettext
## Path to configuration file
configuration_file_name = './config/program_settings.cfg'# name of
the configuration file
## read configuration from config file
try:
program_config = ConfigParser.ConfigParser()
program_config.readfp(open(configuration_file_name))
except IOError, (errno, strerror):
error_msg_exception = _(I/O error(%s): %s) % (errno, strerror)
error_msg_no_config = _(No configuration file with name ),
configuration_file_name, _(found in the program directory. Please copy
your configuration there. Values will be replaced by defaults.)
print error_msg_exception
print error_msg_no_config
easygui.msgbox(error_msg_no_config)
#pass
output = program_config.get('output', 'file_extension')
#
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Re: [Tutor] Conventions for code snippets for debugging and testing?
Robert Kirkpatrick wrote:
Hi All,
Just wondering if there are any basic conventions for including code
snippets that are for testing / debugging only?
For example, you could set a boolean variable called DEBUG, then have
snippets of code like:
if DEBUG:
do stuff
else:
do otherstuff
The use case I'm dealing with right now is to query the SVN commits for a
weekly period and report on each user for that time period. If I'm testing
though, I only want to cycle through a few users, not all of them.
I'm thinking there has to be something slicker than that but maybe not...
Thoughts?
Rob
Check the logging standard module. I use it this way (from the manual) :
code
import logging
logging.basicConfig(level=logging.DEBUG,
format='%(asctime)s %(levelname)s %(message)s',
filename='/tmp/myapp.log',
filemode='w')
logging.debug('A debug message')
logging.info('Some information')
logging.warning('A shot across the bows')
/code
I put the logging.debug('dbg messg') at the appropriate places. When I'm
done then I replaces the logging.basicConfig(level=logging.CRITICAL or
just 100 so as not to log anything and that's it.
You have 6 preset levels, but you can define as many levels you want.
Level Numeric value
CRITICAL50
ERROR 40
WARNING 30
INFO20
DEBUG 10
NOTSET 0
Once you have your logging set you use a tail program to watch your log
and see what's going on.
HTH
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[Tutor] cut all decimal places with zeros
Hello,
how can I suppress the decimal places for (only those) numbers whos
decimal places are zero (0)?
Example:
CODE
In [1]: m = 2.0
In [2]: n = 2.56789080
In [3]: n_format = '%.4f' %n
In [4]: n_format
Out[4]: '2.5679'
In [5]: m_format = '%.4f' %m
In [6]: m_format
Out[6]: '2.'
### END
I would like to have the m_format to be formatted like 2 and the
n_format like 2.5679. How can I achive this?
A g with 2.4 should return 2.4 and not 2.4000.
Basically, I am looking for a way to eliminate the decimal places that
are zero (0).
I tried this humble function before appling the formatting and it works
well with the numbers:
### CODE ###
def cut_decimals(float):
input: floating number
output: number as string with zero decimals removed
#print float-int(float)
#print '%.4f' %float
if float-int(float) != 0:
number = '%.4f' %float
number = number.replace('0.','X.')
number = number.replace('0','')
number = number.replace('X.','0.')
else:
number = '%.0f' %float
return number
n = 2.0
m = 2.5678908
g = 2.4
h = 1.45
i = 0.67
numbers = [n, m, g, h, i]
for i in numbers:
i_f = cut_decimals(i)
print i_f
### END ###
### OUTPUT ###
%run ./test_number.py
2
2.5679
2.4
1.45
0.67
### END ###
Is there any more efficient solution using string formatting only?
Thanks in adavance.
Kind regards,
Timmie
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Re: [Tutor] setting program configuration for all files and modules ofa program
Yes, thats the way I'd recommend. Is there a more decent and elegant way? I don't know. I was just asking how other programmers achive this efficiently. Another option is to have the config settiongs in a normal Python module and just import it. That is less appealing if the config file is shared with a non python program, but if its all Python then that's a much simpler approach... I think that the cfg-files are much more readable for others. PS. Why all the parens around the error strings in your code? I am using gettext: _ = gettest.gettest Got this from the documentation. Thanks for your reply! Timmie ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Open url in browser window
Hi all, This is a serious newbie question. I started this morning. I need to do two simple things (simple on a PC anyway), and I would like to ask the group if it is even possible on a Mac before I go through learning Python. I am a partner in an online training company. All training is delivered via the web. Thus far, our training is accessed via an executable launcher in Windows. We have been asked to create such a launching interface for a Mac based client. We use this approach for several reasons. For the security of our training and the security of our clients computers, we do not allow students to know where the training is on the web (to prevent unauthorized access), or visit any other websites. No surfing while training! We do this by opening a browser window of a specific size with no url line, no menus, nothing except scroll bars, if necessary. Also, to discourage trainees from skipping out of the training to launch other applications, we also disable the tab key and control/alt/delete. Are either or both of these possible on a Mac using Python? Again, we need to: 1. Control the default browser parameters (like you can setup popup windows in javascript with the onClick=MM_openBrWindow command) 2. Control of the user’s keyboard. Obviously, these are both temporary and functionality is restored upon exiting the training. Thank you for your input. Michael Finlayson No virus found in this outgoing message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.22.13/1376 - Release Date: 4/13/2008 1:45 PM ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] cut all decimal places with zeros
Tim Michelsen wrote:
Hello,
how can I suppress the decimal places for (only those) numbers whos
decimal places are zero (0)?
I don't know how to do this with just string formatting but I think
('%.4f' % n).rstrip('.0')
will do what you want.
Kent
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Re: [Tutor] setting program configuration for all files and modules of a program
Tim Michelsen wrote: What is the state of the art in storing and parsing configuraions in python programs? It is pretty common to have a configuration module that is imported wherever the configuration is needed. This is simple but it is essentially global state and shares some of the disadvantages of globals; in particular it couples all your code to the settings module and makes testing more difficult. The alternative is to pass a configuration object to whatever needs it. This eliminates the coupling but is more painful to implement. Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
