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glyph_diff.py
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#
# glyph_diff

import os
import sys

TRUE=1
FALSE=0

exclude = FALSE
if (len(sys.argv) > 1):
    exclude = TRUE
    ok_type = int(sys.argv[1])
#   print "ok_type = %d" % (ok_type)

ignore_col = FALSE
if (len(sys.argv) > 2):
    ignore_col = TRUE
    nok_col = int(sys.argv[2])
#   print "nok_col = %d" % (nok_col)

csv_1 = open("file1.txt", "r").readlines()
csv_2 = open("file2.txt", "r").readlines()

csvLineList_1 = csv_1[0].split(",")
csvLineList_2 = csv_2[0].split(",")
num_cols = len(csvLineList_1)

for lineCount in range( 1, len( csv_1 ) ):
    csvLineList_1 = csv_1[lineCount].split(",")
    csvLineList_2 = csv_2[lineCount].split(",")
    good_line = TRUE
    if (exclude and float(csvLineList_1[1]) != ok_type):
        good_line = FALSE
    if (good_line):
        for colCount in range(num_cols):
            if (not ignore_col or colCount != nok_col - 1):
                if csvLineList_1[colCount] != csvLineList_2[colCount]:
                    print "%d,%d:%f,%f" % \
                    (lineCount, colCount + 1, float(csvLineList_1[colCount]), \
                    float(csvLineList_2[colCount]))
--------------------------------------------------
Run
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#
python ./glyph_diff.py 5 4 > glyph_diff.txt
cat glyph_diff.txt
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file1.txt
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a,b,c,d
1,2,3,4
5,6,7,8
9,10,11,12
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file2.txt
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a,b,c,d
0,2,3,4
5,6,7,8
9,10,11,12
--------------------------------------------------