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kkonganti@0
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1 #!/usr/bin/env python3
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2
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3 # Kranti Konganti
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4
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5 import argparse
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6 import inspect
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7 import logging
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8 import os
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9 import pprint
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10
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11
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12 # Multiple inheritence for pretty printing of help text.
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13 class MultiArgFormatClasses(argparse.RawTextHelpFormatter, argparse.ArgumentDefaultsHelpFormatter):
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14 pass
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15
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16
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17 # Main
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18 def main() -> None:
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19 """
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20 This script takes as input two files containing non whitespace lines and will
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21 output lines if it is present in both files.
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22 """
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23
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24 # Set logging.
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25 logging.basicConfig(
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26 format="\n" + "=" * 55 + "\n%(asctime)s - %(levelname)s\n" + "=" * 55 + "\n%(message)s\n\n",
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27 level=logging.DEBUG,
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28 )
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29
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30 # Debug print.
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31 ppp = pprint.PrettyPrinter(width=55)
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32 prog_name = os.path.basename(inspect.stack()[0].filename)
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33
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34 parser = argparse.ArgumentParser(
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35 prog=prog_name, description=main.__doc__, formatter_class=MultiArgFormatClasses
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36 )
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37
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38 required = parser.add_argument_group("required arguments")
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39
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40 required.add_argument(
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41 "-f1",
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42 dest="file1",
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43 default=False,
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44 required=True,
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45 help="Absolute UNIX path to file no. 1 containing\nnon white space lines.",
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46 )
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47 required.add_argument(
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48 "-f2",
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49 dest="file2",
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50 default=False,
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51 required=True,
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52 help="Absolute UNIX path to file no. 2 containing\nnon white space lines.",
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53 )
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54 parser.add_argument(
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55 "-out",
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56 dest="outfile",
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57 default="accs_passed.txt",
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58 help="The following output file will be created in\nthe current working directory.",
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59 )
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60
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61 args = parser.parse_args()
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62 f1 = args.file1
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63 f2 = args.file2
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64 out = args.outfile
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65 f1d = dict()
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66 f2d = dict()
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67
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68 # Basic checks
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69
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70 if not (os.path.exists(f1) and os.path.exists(f2)):
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71 logging.error(
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72 f"File {os.path.basename(f1)} or" + f"\nFile {os.path.basename(f2)} does not exist."
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73 )
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74 exit(1)
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75 elif not (os.path.getsize(f1) > 0 and os.path.getsize(f2) > 0):
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76 logging.error(
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77 f"File {os.path.basename(f1)} or" + f"\nFile {os.path.basename(f2)} is empty."
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78 )
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79 exit(1)
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80
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81 with open(f1, "r") as f1_fh:
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82 for line in f1_fh:
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83 f1d[line.strip()] = 1
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84
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85 with open(f2, "r") as f2_fh:
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86 for line in f2_fh:
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87 f2d[line.strip()] = 1
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88
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89 big = f1d
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90 small = f2d
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91
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92 if len(f1d.keys()) < len(f2d.keys()):
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93 big = f2d
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94 small = f1d
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95
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96 with open(out, "w") as out_fh:
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97 for line in small.keys():
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98 if line in big.keys():
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99 out_fh.write(line + "\n")
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100
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101 f1_fh.close()
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102 f2_fh.close()
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103 out_fh.close()
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104
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105
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106 if __name__ == "__main__":
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107 main()
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