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add context manager for changing directories #436

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hamelsmu wants to merge 4 commits into from
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add context manager for changing directories #436

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a8eba84
add context mgr
hamelsmu Jul 18, 2022
0dff8f9
add docments
hamelsmu Jul 18, 2022
83087de
clean index
hamelsmu Jul 18, 2022
8352ad4
fix nits
hamelsmu Jul 18, 2022
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1 change: 1 addition & 0 deletions fastcore/_nbdev.py
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Original file line number Diff line number Diff line change
Expand Up @@ -150,6 +150,7 @@
"save_config_file": "02_foundation.ipynb",
"read_config_file": "02_foundation.ipynb",
"Config": "02_foundation.ipynb",
"working_dir": "03_xtras.ipynb",
"walk": "03_xtras.ipynb",
"globtastic": "03_xtras.ipynb",
"maybe_open": "03_xtras.ipynb",
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22 changes: 16 additions & 6 deletions fastcore/xtras.py
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Expand Up @@ -4,12 +4,12 @@
from __future__ import annotations


__all__ = ['walk', 'globtastic', 'maybe_open', 'image_size', 'bunzip', 'loads', 'loads_multi', 'dumps', 'untar_dir',
'repo_details', 'run', 'open_file', 'save_pickle', 'load_pickle', 'dict2obj', 'obj2dict', 'repr_dict',
'is_listy', 'mapped', 'IterLen', 'ReindexCollection', 'get_source_link', 'truncstr', 'spark_chars',
'sparkline', 'modify_exception', 'round_multiple', 'str2bool', 'set_num_threads', 'join_path_file',
'autostart', 'EventTimer', 'stringfmt_names', 'PartialFormatter', 'partial_format', 'utc2local', 'local2utc',
'trace', 'modified_env', 'ContextManagers', 'shufflish']
__all__ = ['working_dir', 'walk', 'globtastic', 'maybe_open', 'image_size', 'bunzip', 'loads', 'loads_multi', 'dumps',
'untar_dir', 'repo_details', 'run', 'open_file', 'save_pickle', 'load_pickle', 'dict2obj', 'obj2dict',
'repr_dict', 'is_listy', 'mapped', 'IterLen', 'ReindexCollection', 'get_source_link', 'truncstr',
'spark_chars', 'sparkline', 'modify_exception', 'round_multiple', 'str2bool', 'set_num_threads',
'join_path_file', 'autostart', 'EventTimer', 'stringfmt_names', 'PartialFormatter', 'partial_format',
'utc2local', 'local2utc', 'trace', 'modified_env', 'ContextManagers', 'shufflish']

# Cell
#nbdev_comment from __future__ import annotations
Expand All @@ -24,6 +24,16 @@
from contextlib import contextmanager,ExitStack
from datetime import datetime, timezone

# Cell
@contextmanager
def working_dir(path:Path|str, # path to temporarily change the working directory to
):
"Changes working directory and returns to previous on exit."
prev_cwd = Path.cwd()
os.chdir(path)
try: yield
finally: os.chdir(prev_cwd)

# Cell
def walk(
path:Path|str, # path to start searching
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