source: LMDZ5/branches/testing/tools/compare_real.py @ 5183

"""This script should be called by "diffdef.sh". It operates on
different lines with common variables. It requires version 2.7 or
higher of Python (it also works with Python 3).

Author: Lionel GUEZ"""

import sys, os.path

with open(os.path.join(sys.argv[1], "common_var")) as common_var1, \
        open(os.path.join(sys.argv[2], "common_var")) as common_var2, \
        open("common_lines", "a") as common_lines, \
        open("uniq_val", "w") as uniq_val:
    uniq_val.write("Comparison of " + sys.argv[1] + " and " +  sys.argv[2] 
                   + ":\n") # title line
    for line1, line2 in zip(common_var1, common_var2):
        i = line1.index("=")
        var_name = line1[:i]
        value1 = line1[i + 1:-1]
        value2 = line2[i + 1:-1]
        try:
            value1_num = float(value1)
            value2_num = float(value2)
        except ValueError:
            uniq_val.write(var_name + "=\t" + value1 + "\t" + value2 + "\n")
        else:
            if (value1_num, value2_num) == (0, 0) \
                    or abs(value2_num - value1_num) \
                    / max(abs(value1_num), abs(value2_num)) <= 1e-5:
                # These should not be integer values, write a formatted value:
                common_lines.write(var_name + "=" + str(value1_num) + "\n")
            else:
                # These could be integer values, write the original strings:
                uniq_val.write(var_name + "=\t" + value1 + "\t" + value2 
                               + "\n")