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Add argument raise_error_if_not_found for read_env #165

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Add argument raise_error_if_not_found for read_env #165

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0774953
Add argument `raise_error_if_not_found` for read_env
reorx Aug 6, 2020
f906fd5
pass raise_error_if_not_found to find_dotenv
reorx Aug 6, 2020
b2f884c
Revert "pass raise_error_if_not_found to find_dotenv"
reorx Aug 12, 2020
5dbd890
format by black
reorx Aug 12, 2020
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15 changes: 13 additions & 2 deletions environs/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -268,6 +268,7 @@ def read_env(
recurse: _BoolType = True,
verbose: _BoolType = False,
override: _BoolType = False,
raise_error_if_not_found: _BoolType = False,
) -> None:
"""Read a .env file into os.environ.

Expand All @@ -288,6 +289,8 @@ def read_env(
if Path(path).is_dir():
raise ValueError("path must be a filename, not a directory.")
start = Path(path)

is_env_file_found = False
# TODO: Remove str casts when we drop Python 3.5
if recurse:
start_dir, env_name = os.path.split(str(start))
Expand All @@ -296,10 +299,18 @@ def read_env(
for dirname in _walk_to_root(start_dir):
check_path = Path(dirname) / env_name
if check_path.exists():
is_env_file_found = True
load_dotenv(str(check_path), verbose=verbose, override=override)
return
break
else:
load_dotenv(str(start), verbose=verbose, override=override)
if start.exists():
is_env_file_found = True
load_dotenv(str(start), verbose=verbose, override=override)

if verbose:
print("environ: is_env_file_found={}".format(is_env_file_found))
if raise_error_if_not_found and not is_env_file_found:
raise OSError("File not found: {}".format(path or ".env"))

@contextlib.contextmanager
def prefixed(self, prefix: _StrType) -> typing.Iterator["Env"]:
Expand Down