Python parsing text File Demo sample

Purpose: Find the first floating-point number in the text with the lower three vertical bars in the Sum/avg line

Idea: First use Python to read a line in the text and then cut the string. Finds rows that contain Sum/avgkeyword. Take out the desired result

Text Local:

........

|    Msop0 | 8 326 |   99.4 0.3 0.3 0.3 0.9 25.0 | -0.383 |
|--------+-------------+-----------------------------------------+-------------|
|    MSPE0 | 8 394 |100.0 0.0 0.0 0.0 0.0 0.0 |-2147483.648 |
|--------+-------------+-----------------------------------------+-------------|
|    Muor0 | 8 458 |100.0 0.0 0.0 0.0 0.0 0.0 |-2147483.648 |
|--------+-------------+-----------------------------------------+-------------|
|    mvxz0 | 8 435 |    99.8 0.0 0.2 0.2 0.5 25.0 | 0.419 |
|--------+-------------+-----------------------------------------+-------------|
|    Mwie0 | 8 376 |100.0 0.0 0.0 0.0 0.0 0.0 |-2147483.648 |
|==============================================================================|
|  Sum/avg| 224 11172 |   99.8 0.1 0.1 0.1 0.2 8.5 | -0.089 |
|==============================================================================|
|  Mean | 8.0 399.0 | 99.8 0.1 0.1 0.1 0.2 8.5 |-2147483.648 |
|  S.D.  |  0.0 35.4 | 0.2 0.1 0.2 0.1 0.3 9.0 |-2147483.648 |
|  Median | 8.0 394.0 |100.0 0.0 0.0 0.0 0.2 12.5 |-2147483.648 |
'------------------------------------------------------------------------------'

Test procedures such as the following:

>>> ss= ' | Sum/avg|  224  11172 | 99.8    0.1 0.1 0.1 0.2 8.5    |   -0.089    | ' >>> SS ' | Sum/avg|  224  11172 | 99.8    0.1 0.1 0.1 0.2 8.5    |   -0.089    | ' >>> ss.split (' | ') [', ' sum/avg ', '  224  11172 ', ' 99.8 0.1 0.1 0.1 0.2 8.5    ', '   -0.089    ', ']>>> ss.split (' | ') [1] = = ' Sum/avg ' true>>> ss.split (' | ') [3] ' 99.8    0.1    0.1    0.1    0.2    8.5 ' >>> ss.split (' | ') [3] [0:5] ' 99.8 ' >>> float (ss.split (' | ') [3] [0:5]) 99.8

The procedure of Examination:

f = open ("Ctm_39phn.filt.sys")             # Returns a file object line = F.readline ()             # Call the file's ReadLine () method while line:    #print line,< c3/># followed by ', ' will ignore newline character    if Line.split (' | ') [1] = = ' Sum/avg ':p rint float (line.split (' | ') [3] [0:5])    # print (line, end = ') # in Python 3 using line    = F.readline () f.close ()

Python parsing text File Demo sample