pprocess

examples/simple1.py

143:2f919af8a8bc
2008-06-02 paulb [project @ 2008-06-02 19:33:57 by paulb] Updated release information.
     1 #!/usr/bin/env python     2      3 """     4 A simple example of sequential computation using a function, appending results     5 to a list/array.     6 """     7      8 import time     9 #import random    10     11 # Array size.    12     13 N = 10    14 delay = 1    15     16 # Work function.    17     18 def calculate(i, j):    19     20     """    21     A supposedly time-consuming calculation on 'i' and 'j'.    22     """    23     24     #time.sleep(delay * random.random())    25     time.sleep(delay)    26     return i * N + j    27     28 # Main program.    29     30 if __name__ == "__main__":    31     32     t = time.time()    33     34     # Initialise an array.    35     36     results = []    37     38     # Perform the work.    39     40     print "Calculating..."    41     for i in range(0, N):    42         for j in range(0, N):    43             results.append(calculate(i, j))    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