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""" |
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Modern, cross-platform, pure-Python pyclean implementation. |
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3
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""" |
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import logging |
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6
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try: |
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from pathlib import Path |
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except ImportError: # Python 2.7, PyPy2 |
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from warnings import warn |
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10
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warn("Python 3 required for modern implementation. Python 2 is obsolete.") |
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11
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12
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log = logging.getLogger(__name__) |
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13
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14
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15
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class Runner: # pylint: disable=too-few-public-methods |
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"""Module-level configuration and value store.""" |
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rmdir_count = 0 |
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rmdir_failed = 0 |
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unlink_count = 0 |
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unlink_failed = 0 |
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22
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23
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def remove_file(fileobj): |
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"""Attempt to delete a file object for real.""" |
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log.debug("Deleting file: %s", fileobj) |
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try: |
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fileobj.unlink() |
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Runner.unlink_count += 1 |
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except OSError as err: |
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log.debug("File not deleted. %s", err) |
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Runner.unlink_failed += 1 |
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33
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34
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def remove_directory(dirobj): |
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"""Attempt to remove a directory object for real.""" |
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log.debug("Removing directory: %s", dirobj) |
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try: |
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dirobj.rmdir() |
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Runner.rmdir_count += 1 |
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except OSError as err: |
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log.debug("Directory not removed. %s", err) |
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Runner.rmdir_failed += 1 |
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44
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45
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def print_filename(fileobj): |
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"""Only display the file name, used with --dry-run.""" |
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log.debug("Would delete file: %s", fileobj) |
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Runner.unlink_count += 1 |
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50
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51
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def print_dirname(dirobj): |
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"""Only display the directory name, used with --dry-run.""" |
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log.debug("Would delete directory: %s", dirobj) |
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Runner.rmdir_count += 1 |
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55
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56
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57
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def pyclean(args): |
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"""Cross-platform cleaning of Python bytecode.""" |
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Runner.unlink = print_filename if args.dry_run else remove_file |
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Runner.rmdir = print_dirname if args.dry_run else remove_directory |
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61
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62
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log_level = logging.FATAL if args.quiet \ |
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else logging.DEBUG if args.verbose \ |
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64
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else logging.INFO |
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65
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log_format = "%(message)s" |
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66
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logging.basicConfig(level=log_level, format=log_format) |
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67
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68
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for directory in args.directory: |
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log.info("Cleaning directory %s", directory) |
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descend_and_clean_bytecode(Path(directory)) |
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72
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log.info("Total %d files, %d directories %s.", |
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Runner.unlink_count, Runner.rmdir_count, |
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74
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"would be removed" if args.dry_run else "removed") |
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76
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if Runner.unlink_failed or Runner.rmdir_failed: |
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log.debug("%d files, %d directories could not be removed.", |
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Runner.unlink_failed, Runner.rmdir_failed) |
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80
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81
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def descend_and_clean_bytecode(directory): |
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82
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""" |
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83
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Walk and descend a directory tree, cleaning up bytecode files along |
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84
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the way. Only delete bytecode folders if they are empty in the end. |
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85
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""" |
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86
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for child in directory.iterdir(): |
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87
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if child.is_file(): |
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88
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if child.suffix in ['.pyc', '.pyo']: |
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Runner.unlink(child) |
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90
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elif child.is_dir(): |
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91
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descend_and_clean_bytecode(child) |
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92
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93
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if child.name == '__pycache__': |
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94
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Runner.rmdir(child) |
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95
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else: |
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96
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log.debug("Ignoring %s", child) |
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97
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bittner /
pyclean
