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import os
PLOTLY_DIR = os.environ.get(
"PLOTLY_DIR", os.path.join(os.path.expanduser("~"), ".plotly")
)
TEST_FILE = os.path.join(PLOTLY_DIR, ".permission_test")
def _permissions():
try:
if not os.path.exists(PLOTLY_DIR):
try:
os.mkdir(PLOTLY_DIR)
except Exception:
# in case of race
if not os.path.isdir(PLOTLY_DIR):
raise
with open(TEST_FILE, "w") as f:
f.write("testing\n")
try:
os.remove(TEST_FILE)
except Exception:
pass
return True
except Exception: # Do not trap KeyboardInterrupt.
return False
_file_permissions = None
def ensure_writable_plotly_dir():
# Cache permissions status
global _file_permissions
if _file_permissions is None:
_file_permissions = _permissions()
return _file_permissions
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