Hi here is the program I have: with open('C://avy.txt', "rtU") as f: columns = f.readline().strip().split(" ") numRows = 0 sums = [0] * len(columns) for line in f: # Skip empty lines if not line.strip(): continue values = line.split(" ") for i in xrange(len(values)): ...
I have created a table (MySQL 5.1) from sqlalchemy import * def get(): db = create_engine('mysql://user:password@localhost/database') db.echo = True metadata = MetaData(db) feeds = Table('feeds', metadata, Column('id', Integer, primary_key=True), Column('title', String(100)), Column...
a = [1,2,3,4,5] b = [1,3,5,6] c = a and b print c actual output: [1,3,5,6] expected output: [1,3,5] How can we achieve a boolean AND operation (list intersection) on two lists? Any help will be highly appreciated. ...
Consider this try/catch block I use for checking error message stored in e. Try/Catch to get the e queryString = "SELECT * FROM benchmark WHERE NOC = 2" try: res = db.query(queryString) except SQLiteError, e: # `e` has the error info print `e` The e object here contains nothing more than the above string. When python re...
Say you have some list L and you want to split it into two lists based on some boolean function P. That is, you want one list of all the elements l where P(l) is true and another list where P(l) is false. I can implement this in Python like so: def multifilter(pred,seq): trues,falses = [],[] for x in seq: if pred(x): ...
I have a SQL string, for example SELECT * FROM benchmark WHERE xversion = 1.0 And actually, xversion is aliased variable, and self.alias has all the alias info something like {'CompilationParameters_Family': 'chip_name', 'xversion': 'CompilationParameters_XilinxVersion', 'opt_param': .... 'chip_name': 'CompilationParameters_...
in C#, I can do (#.####), which prints up to 4 significant digits after the decimal point. 1.2 -> 1.2 1.234 -> 1.234 1.23456789 -> 1.2345 Afaik, in python, there is only the c-style %.4f which will always print to 4 decimal points padded with 0s at the end if needed. I don't want those 0s. Any suggestions for what is the cleanest way t...
I have a block of code selected, I want to un-indent this selected code. On a pc, I would do a shift-tab and it would un-indent. ...
I write this according to flaskr sample, I can login with browser,but test fails. Thanks for your help! @app.route('/login', methods=['GET', 'POST']) def login(): error = None if request.method == 'POST': username = request.form['username'] password = request.form['password'] if lib.authenticate_u...
Using webpy, what's the proper way to reference the templates directory for web.template.render() so that it works on both the webpy development web server and on Apache? The following code works using the development server but not when running on my Apache server. import web urls = ( '/', 'index', ) class index: def GET(self)...
I have a list of labels, and data as follows. ['id', 'Version', 'chip_name', 'xversion', 'device', 'opt_param', 'place_effort'] [1, 1.0, u'virtex2', u'xilinx11.5', u'xc5vlx50', u'Speed', u'High'] I need to print them into console. And for this, I'm iterating over the list, and print out each element with a tab ('\t'). But, unfortuna...
def boolean_search_and(self, text): results = [] and_tokens = self.tokenize(text) tokencount = len(and_tokens) term1 = and_tokens[0] print ' term 1:', term1 term2 = and_tokens[1] print ' term 2:', term2 #for term in and_tokens: if term1 in self._inverted_index.keys(): resultlist1 = self._i...
I am currently learning django, i want to be a freelancer. From what i have gathered that there is not much work in python/django on the internet and i have to get my hands on php. I want advice on what should i do? Please help me get started. Thanks in advance. ...
The script below works great when logged in as root and run from the command line, but when run at first boot using /etc/rc.local in Ubuntu 10.04, it fails about 25% of the time- the system root, mysql root and some mysql user passwords are set correctly, but one will fail with console log reporting standard mysql login error: "ERROR...
I have a script receiveing data from a socket, each data contains a sessionid that a have to keep track of, foreach incomming message, i'm opening a new process with the multiprocessing module, i having trouble to figure out a way to keep track of the new incoming messages having the same sessionid. For example: 100100|Hello -- (open ...
I writing code that should compiled and run on both Windows and unix like Linux. I know about difference between line endings, but question is which to prefer for my code? Does it matter? I want it to be consistent - say all my code uses LF only, or is it better CRLF only? Are there critaria for comparing? If it matters mostly I care fo...
Hello everyone, I am trying to pass current object reference i.e. self to the Timer class of timeit module but somehow i am not getting it how to do it. I tried to find it in timeit documentation but i could not find it. I have attached my code with this question. from timeit import Timer import time import math class PollingDemo(T...
Hi, I have a dictionary which has coordinate pairs as a keys: i.e.: d = {(15,21): "value1", (7,45): "value2", (500,321): "value3",...} Now I need to return a sub dictionary of the elements where the keys are within a certain range: for example: the range of (6:16, 20:46) should return the following dictionary: d = {(15,21): "Value1",...
Is it possible to get the overall cursor position in Windows using the standard Python libraries? ...
After trying to get this to work for a while and searching around I am truly stumped so am posting here... I want to make some functions in classes that I am writing for django as generic as possible so I want to use getattr to call functions such as the one below in a generic manner: the way I do it that works (non-generic manner): fr...