pprocess

examples/simple2.py

138:e1b43585087b
2008-05-13 paulb [project @ 2008-05-13 18:05:27 by paulb] Added missing stylesheet.
     1 #!/usr/bin/env python     2      3 """     4 A simple example of sequential computation using a function.     5 """     6      7 import time     8 #import random     9     10 # Array size.    11     12 N = 10    13 delay = 1    14     15 # Work function.    16     17 def calculate(i, j):    18     19     """    20     A supposedly time-consuming calculation on 'i' and 'j'.    21     """    22     23     #time.sleep(delay * random.random())    24     time.sleep(delay)    25     return (i, j, i * N + j)    26     27 # Main program.    28     29 if __name__ == "__main__":    30     31     t = time.time()    32     33     # Initialise an array.    34     35     results = [0] * N * N    36     37     # Perform the work.    38     39     print "Calculating..."    40     for i in range(0, N):    41         for j in range(0, N):    42             i2, j2, result = calculate(i, j)    43             results[i2*N+j2] = result    44     45     # Show the results.    46     47     for i in range(0, N):    48         for result in results[i*N:i*N+N]:    49             print result,    50         print    51     52     print "Time taken:", time.time() - t    53     54 # vim: tabstop=4 expandtab shiftwidth=4