write a program to find the sum of the logarithms of all the primes from 2 to some number n, and print out the sum of the logs of the primes, the number n, and the ratio of these two quantities in python
How would I download files (video) with Python using wget and save them locally? There will be a bunch of files, so how do I know that one file is downloaded so as to automatically start downloding another one?
Thanks.
I'd like to grab daily sunrise/sunset times from here. Is it possible to scrape web content with Python? what are the modules used? Is there any tutorial available?
Thanks
Hi,
I want to create a dynamic object (inside another object) in python and then add attributes to it.
I tried:
obj = someobject
obj.a = object()
setattr(obj.a, 'somefield', 'somevalue')
but this didn't work.
Any ideas?
Thanks
I am looking for a GUI python module that is best suited for the following job:
I am trying to plot a graph with many columns (perhaps hundreds), each column representing an individual. The user should be able to drag the columns around and drop them onto different columns to switch the two. Also, there are going to be additional dots drawn on the columns and by hovering over those dots, the user should see the values corresponding to those dots. What is the best way to approach this?
Hi all
I have the following 4 arrays ( grouped in 2 groups ) that I would like to merge in ascending order by the keys array.
I can use also dictionaries as structure if it is easier.
Has python any command or something to make this quickly possible?
Regards
MN
# group 1
[7, 2, 3, 5] #keys
[10,11,12,26] #values
[0, 4] #keys
[20, 33] #values
# I would like to have
[ 0, 2, 3, 4, 5, 7 ] # ordered keys
[20, 11,12,33,26,33] # associated values
I've been hunting around for a Python CouchDB tutorial and haven't been able to find anything very thorough. The only thing I've really found is this site, which I haven't gotten to work because I keep getting a 'connection refused' error when I try to create a database.
Does anyone know where I would look for a tutorial to help me with this?
To learn from good examples, what are the best open source Google App Engine applications out there?
I don't care if it is Java or Python based.
Please one app per answer. Feel free to add a link to the live app (if there is) and to the project page.
Is there perl's YAPE::Regex::Explain alternative to python?
Which could do
\w+=\d+|\w+='[^']+'
to explanations like this
NODE EXPLANATION
--------------------------------------------------------------------------------
\w+ word characters (a-z, A-Z, 0-9, _) (1 or
more times (matching the most amount
possible))
--------------------------------------------------------------------------------
= '='
--------------------------------------------------------------------------------
\d+ digits (0-9) (1 or more times (matching
the most amount possible))
--------------------------------------------------------------------------------
| OR
--------------------------------------------------------------------------------
\w+ word characters (a-z, A-Z, 0-9, _) (1 or
more times (matching the most amount
possible))
--------------------------------------------------------------------------------
=' '=\''
--------------------------------------------------------------------------------
[^']+ any character except: ''' (1 or more times
(matching the most amount possible))
--------------------------------------------------------------------------------
' '\''
I am trying to host some files/rails app in the port 8080 for external access. For python I am using the SimpleHTTPServer module, and for rails, webrick. However, both of them does not work very well. I don't get the response back, and, sometimes, if I get it, it's VERY slow. Nevertheless, apache works very well on the port 8080 (i am not running them at the same time). What is going on?
Can anyone point me to some documentation on how to write scripts in Python (or Perl or any other Linux friendly script language) that generate C++ code from XML or py files from the command line. I'd like to be able to write up some xml files and then run a shell command that reads these files and generates .h files with fully inlined functions, e.g. streaming operators, constructors, etc.
I want to do a very simple webserver in python able to receive XML document over HTTP and then to send as response XML document.
Do you have any example?
just to understand How arrange the work...
many thanks!
What is the most straightforward way of making dictionary or list from a string in Python? Let's say I have string "{ 'x' : 3, 'y' : 4 }" and I want to parse it to a real dictionary object.
Which are the most advanced frameworks and tools there are available for python for practicing Behavior Driven Development? Especially finding similar tools as rspec and mocha for ruby would be great.
I am looking for a good Tree data structure class. I have come across this package, but since I am relatively new to Python (not programming), I dont know if there are any better ones out there.
I'd like to hear from the Pythonistas on here - do you have a favorite tree script that you regularly use and would recommend?
I'm working on a python class that is being shared between two products. 90% of the functionality applies to both products. For the 10% that's different the code is littered with this kind of thing:
#Start of file
project = 'B'
#Some line of code
if project == 'A':
import moduleA
elif project == 'B':
import moduleB
#Many lines of code
if project == 'A':
print moduleA.doA(2)
elif project == 'B':
print moduleB.doB(2)
This doesn't seem very elegant or very readable, has anyone encountered this sort of thing before? Are there better ways of doing it?
What is the best way to store the cards and suits in python so that I can hold a reference to these values in another variable?
For example, if I have a list called hand (cards in players hand), how could I hold values that could refer to the names of suits and values of specific cards, and how would these names and values of suits and cards be stored?
I want to print in the terminal with colors ? how can I do that in python ?
Another questions what is the best character that when it is printed it look like a box [brick] ?
I want to print colored blocks, it is part of game :)
The topic title pretty much says it all. Does anyone know how the built in dictionary type for python is implemented? My understanding is that it is some sort of hash table, but I haven't been able to find any sort of definitive answer.
I've been reading the Python 3.2 docs about string formatting but it hasn't really helped me with this particular problem.
Here is what I'm trying to do:
stats = { 'copied': 5, 'skipped': 14 }
print( 'Copied: {copied}, Skipped: {skipped}'.format( stats ) )
The above code will not work because the format() call is not reading the dictionary values and using those in place of my format placeholders. How can I modify my code to work with my dictionary?
I am looking to make a python script be unique in the sense that it can only run once at a time. For example if I run the script and open another session of the same script a second time and the first session is still running, then the second session will just exit and do nothing. Anyone knows how I could implement this?
Hello,
I'll just show some code to show how I do web development in PHP.
<html>
<head>
<title>Example #3 TDavid's Very First PHP Script ever!</title>
</head>
<? print(Date("m/j/y"));
require_once("somefile.php");
$mysql_db = "DATABASE NAME";
$mysql_user = "YOUR MYSQL USERNAME";
$mysql_pass = "YOUR MYSQL PASSWORD";
$mysql_link = mysql_connect("localhost", $mysql_user, $mysql_pass);
mysql_select_db($mysql_db, $mysql_link);
$result = mysql_query("SELECT impressions from tds_counter where COUNT_ID='$cid'", $mysql_link);
if(mysql_num_rows($result)) {
mysql_query("UPDATE tds_counter set impressions=impressions+1 where COUNT_ID='$cid'", $mysql_link);
$row = mysql_fetch_row($result);
if(!$inv) {
print("$row[0]");
}
}
?>
<body>
</body>
</html>
Thats it. I write every file like this. Recently, I learnt OOP and started using classes & objects in PHP.
I hear that there are many frameworks there for PHP. They say that one must use these libraries. But I feel they are just making things complicated.
Anyway, this is how I've been doing my web development. Now, I want to improve this. and make it professional. Also I want to move to Python. I searched SO archives and found everyone suggesting Django. But, can any one give me some idea about how web development in Python works?
user (client) request for page ---
webserver(-embedded PHP interpreter)
---- Server side(PHP) Script --- MySQL Server.
Now, is it that instead of PHP interpreter there is python interpreter & instead of php script there is python script, which contains both HTML & python (embedded in some kind of python tags). Python script connects to database server and fetches some data which will be printed as HTML. or is it different in python world?
Is this Django thing like frameworks for PHP? Can't one code in python without using Django. Because, I never encountered any post without django
Please give me some kick start.
How would i get the current URL with Python,
I need to grab the current URL so i can check it for query strings e.g
requested_url = "URL_HERE"
url = urlparse(requested_url)
if url[4]:
params = dict([part.split('=') for part in url[4].split('&')])
also this is running in Google App Engine
How can I combine 2 ints to a single 32bit IEEE floating point ? (each of the 2 ints represent 16 bit)
And in the opposite direction: How can I transform a python float into 2 16 bit ints?
(I need this because of modbus protocol - where 2x16 bit registers are treated as single 32 floating point number)