Group items tagged

Louie provides Python programmers with a straightforward way to dispatch signals between objects in a wide variety of contexts. It is based on PyDispatcher, which in turn was based on a highly-rated recipe in the Python Cookbook. Louie is licensed under The BSD License.

def comb(items, n=None): if n is None: n = len(items) for i in range(len(items)): v = items[i:i+1] if n == 1: yield v else: rest = items[i+1:] for c in comb(rest, n-1): yield v + c

def perm(items, n=None): if n is None: n = len(items) for i in range(len(items)): v = items[i:i+1] if n == 1: yield v else: rest = items[:i] + items[i+1:] for p in perm(rest, n-1): yield v + p

Permutation and Combination Enumerator

import win32api import win32com.client shell = win32com.client.Dispatch("WScript.Shell") shell.Run("calc") win32api.Sleep(100) shell.AppActivate("Calculator") win32api.Sleep(100) shell.SendKeys("1{+}") win32api.Sleep(500) shell.SendKeys("2") win32api.Sleep(500) shell.SendKeys("~") # ~ is the same as {ENTER} win32api.Sleep(500) shell.SendKeys("*3") win32api.Sleep(500) shell.SendKeys("~") win32api.Sleep(2500)

Sometimes you get an Excel spreadsheet (say, from the marketing departement) and you want to read tabular data from it (i.e. a line with column headers and lines of data). There are many ways to do this (including ODBC + mxODBC), but the easiest way I've found is this one : provide a file name and a sheet name, and read the data !